Deforestation in the tropics - Summary

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Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

The Political Economy of Deforestation inthe Tropics

Burgess, Hansen, Olken, Potapov, and Sieber [2012]The Quarterly Journal of Economics (2012) 127 (4): 1707-1754

July 2, 2014

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Overview

Introduction

Literature

AnalysisBackgroundDataThe ModelEstimationResults

Policy Implications

Conclusions

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

◮ annually about 20.000 km2 deforested in the tropics

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

◮ annually about 20.000 km2 deforested in the tropics

Idea

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

◮ annually about 20.000 km2 deforested in the tropics

Idea

◮ Development of deforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

◮ annually about 20.000 km2 deforested in the tropics

Idea

◮ Development of deforestation

◮ Role of corruption

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Introduction

Stylized Facts

◮ counteracting climate change (Photosynthesis)

◮ illegal logging one of major sources of deforestation

◮ annually about 20.000 km2 deforested in the tropics

Idea

◮ Development of deforestation

◮ Role of corruption

◮ Connection of changes in political system anddeforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’s

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Barbier et al. [1995]

◮ analyze different policies such as export ban andexport tax

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Barbier et al. [1995]

◮ analyze different policies such as export ban andexport tax

Dauvergne [1993]

◮ corruption from political point of view

◮ criticizes Suharto regime

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Barbier et al. [1995]

◮ analyze different policies such as export ban andexport tax

Dauvergne [1993]

◮ corruption from political point of view

◮ criticizes Suharto regime

Palmer [2001]

◮ analysis of corruption and market failures due tomisplaced subsidies

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Barbier et al. [1995]

◮ analyze different policies such as export ban andexport tax

Dauvergne [1993]

◮ corruption from political point of view

◮ criticizes Suharto regime

Palmer [2001]

◮ analysis of corruption and market failures due tomisplaced subsidies

Olken [2006]

◮ empirical study to prove corruption

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Literature

Many papers stem from 90’s or early 00’sSantilli et al. [2005]

◮ blaming ‘swidden’ agriculture on deforestation

Barbier et al. [1995]

◮ analyze different policies such as export ban andexport tax

Dauvergne [1993]

◮ corruption from political point of view

◮ criticizes Suharto regime

Palmer [2001]

◮ analysis of corruption and market failures due tomisplaced subsidies

Olken [2006]

◮ empirical study to prove corruption

Fitrani et al. [2005]

◮ why do districts split?

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

◮ head of district makes money by selling loggingpermits to firms

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

◮ head of district makes money by selling loggingpermits to firms

◮ national governments determine legal quotas forlogging

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

◮ head of district makes money by selling loggingpermits to firms

◮ national governments determine legal quotas forlogging

◮ head of districts might sell more than legal

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

◮ head of district makes money by selling loggingpermits to firms

◮ national governments determine legal quotas forlogging

◮ head of districts might sell more than legal

◮ districts split due to decentralization → moreheads of districts

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Sketch of Analysis

◮ logging firms make profits by felling trees andselling wood

◮ head of district makes money by selling loggingpermits to firms

◮ national governments determine legal quotas forlogging

◮ head of districts might sell more than legal

◮ districts split due to decentralization → moreheads of districts

◮ more illegally sold permits → more deforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator Suharto

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

◮ discrimination of certain ethnics and censorship ofmedia

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

◮ discrimination of certain ethnics and censorship ofmedia

◮ concentration of power

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

◮ discrimination of certain ethnics and censorship ofmedia

◮ concentration of power

◮ economic growth under the cost of corruption

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

◮ discrimination of certain ethnics and censorship ofmedia

◮ concentration of power

◮ economic growth under the cost of corruption

Decentralization since fall of Suharto regime

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Background

Asia crisis ended regime of dictator SuhartoSuharto:

◮ former General who gained power by military putsch

◮ discrimination of certain ethnics and censorship ofmedia

◮ concentration of power

◮ economic growth under the cost of corruption

Decentralization since fall of Suharto regime⇒ splits of districts

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Different forest zones

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Different forest zones

◮ Production forest

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Different forest zones

◮ Production forest

◮ Conversion forest

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Different forest zones

◮ Production forest

◮ Conversion forest

◮ Conservation forest

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Moderate Resolution Imaging Spectroradiometer(MODIS) data set

◮ Satellite Data that count deforested area

◮ Count deforested pixels (250m × 250m)

◮ 438 images, equaling 34.6 million pixels (18.9 millionpixels are forest)

◮ red=deforested, green=forest, yellow=nonforest

Different forest zones

◮ Production forest

◮ Conversion forest

◮ Conservation forest

◮ Protection forest

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Figure : District level logging [Burgess et al., 2012]

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

Figure : Forest Cover Change Riau [Burgess et al., 2012]

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

◮ Production forest 486,720 pixels

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

◮ Production forest 486,720 pixels

◮ Conversion forest 179,360 pixels

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

◮ Production forest 486,720 pixels

◮ Conversion forest 179,360 pixels

◮ Conservation forest 60,320 pixels

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

◮ Production forest 486,720 pixels

◮ Conversion forest 179,360 pixels

◮ Conservation forest 60,320 pixels

◮ Protection forest 56,640 pixels

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Data

First findings

◮ total deforestation 783,040 pixels (48,940 km2)

◮ Production forest 486,720 pixels

◮ Conversion forest 179,360 pixels

◮ Conservation forest 60,320 pixels

◮ Protection forest 56,640 pixels

On average 113 pixels per district (annually)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Districts

Number of DistrictsProvince in 2000 in 2008NAD (Aceh) 13 23N. Sumatra 19 33W. Sumatra 15 19Riau 11 12Jambi 10 11S. Sumatra 7 15Bengkulu 4 10Lampung 10 14Bangka Belitung 3 7W. Kalimantan 9 14C. Kalimantan 6 14S. Kalimantan 11 13E. Kalimantan 12 14N. Sulawesi 5 15C. Sulawesi 8 11S. Sulawesi 21 24SE Sulawesi 5 12Gorontalo 3 6W. Sulawesi 3 5W. Papua 4 11Papua 10 29

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Parties involved

Logging companies

◮ profit maximizing through selling wood

◮ have to buy permit with price b in order to sell logslater on

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Parties involved

Logging companies

◮ profit maximizing through selling wood

◮ have to buy permit with price b in order to sell logslater on

Heads of District

◮ profit maximizing through selling permits b

◮ there’s a probability π that they are caught sellingtoo many permits

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Profit maximization of logging firms

maxqfdp(Q)qfd − cqfd − bdqfd (1)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Profit maximization of logging firms

maxqfdp(Q)qfd − cqfd − bdqfd (1)

Solving for the first order conditions, each firm is willingto pay a price for a permit up to

bd = p(Q)− c (2)

where Q is exogenous for the firms.

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Profit maximization of Heads of Districts

maxqdb(qd)qd − π(qd, q)rd (3)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Profit maximization of Heads of Districts

maxqdb(qd)qd − π(qd, q)rd (3)

Plugging in the first order condition of the firmsmaximization problem yields:

maxqdqdp

D∑

j=1

qj

− cqd − π(qd, q)rd (4)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Profit maximization of Heads of Districts

maxqdb(qd)qd − π(qd, q)rd (3)

Plugging in the first order condition of the firmsmaximization problem yields:

maxqdqdp

D∑

j=1

qj

− cqd − π(qd, q)rd (4)

Derive with respect to q

qdp′ + p− c− π′(qd, q)rd = 0 (5)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Assume functional form of inverse demand functionp = a/qλ with constant elasticity of demand 1/λ

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Cournot Framework

Assume functional form of inverse demand functionp = a/qλ with constant elasticity of demand 1/λ

Semi elasticity

1

Q

dQ

dn=

1

n2 − nλ(6)

This will be the parameter estimated later on

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model⇒ Poisson regression standard tool for count models

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model⇒ Poisson regression standard tool for count models

◮ Poisson assumes positive integer numbers

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model⇒ Poisson regression standard tool for count models

◮ Poisson assumes positive integer numbers

◮ µ = exp(x′β) as mean specification⇒ λ might vary across individuals according tospecific function of x and β

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model⇒ Poisson regression standard tool for count models

◮ Poisson assumes positive integer numbers

◮ µ = exp(x′β) as mean specification⇒ λ might vary across individuals according tospecific function of x and β

◮ in case of Poisson regression, QMLE may correctlyidentify certain features of reality (such asconditional mean although distribution misspecified)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

Fixed effect Poisson quasi maximum likelihood (QML)count model⇒ Poisson regression standard tool for count models

◮ Poisson assumes positive integer numbers

◮ µ = exp(x′β) as mean specification⇒ λ might vary across individuals according tospecific function of x and β

◮ in case of Poisson regression, QMLE may correctlyidentify certain features of reality (such asconditional mean although distribution misspecified)

first order conditions of the general maximization problemof the Poisson QML estimator β:

N∑

i=1

(µ− exp(x′iβ))xi = 0 (7)

fulfilled in the case of E[µ|xi] = exp(x′iβ)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

As long as conditional mean is correctly specified theestimator will be consistent!⇒ do not even require dependent variable to be Poissondistributed

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

As long as conditional mean is correctly specified theestimator will be consistent!⇒ do not even require dependent variable to be Poissondistributed

Interpretation of coefficient knowing thatE(Q) = µpiexp(βn+ ηit)):

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

As long as conditional mean is correctly specified theestimator will be consistent!⇒ do not even require dependent variable to be Poissondistributed

Interpretation of coefficient knowing thatE(Q) = µpiexp(βn+ ηit)):

dQ

dn=µpiexp(βn+ ηit)β (8)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

As long as conditional mean is correctly specified theestimator will be consistent!⇒ do not even require dependent variable to be Poissondistributed

Interpretation of coefficient knowing thatE(Q) = µpiexp(βn+ ηit)):

dQ

dn=µpiexp(βn+ ηit)β (8)

=Qβ (9)

β =dQ

dn

1

Q(10)

Introduction

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Data

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Estimation

As long as conditional mean is correctly specified theestimator will be consistent!⇒ do not even require dependent variable to be Poissondistributed

Interpretation of coefficient knowing thatE(Q) = µpiexp(βn+ ηit)):

dQ

dn=µpiexp(βn+ ηit)β (8)

=Qβ (9)

β =dQ

dn

1

Q(10)

Semi elasticity

Introduction

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Data

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Specification of quantity effect estimation

E(deforestpit) = µpiexp(βNumDistrictsInProvpit + ηit)

(11)

with

◮ deforestpit as the dependent variable counting thepixels declared as deforested

◮ µpi as a province fixed effect

◮ NumDistrictsInProvpit as the number of districts in aprovince

◮ ηit as an island × year fixed effect

Introduction

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Specification of price effect estimation

Here they use official production data

log(ywpit) = βNumDistrictsInProvpit + µwpi + ηwit + ǫwpit

(12)

with

◮ log(ywpit) as the price or quantity of wood type w

harvested in province p and year t

◮ µwpi as a wood type by province fixed effect

◮ NumDistrictsInProvpit as the number of districts in aprovince

◮ ηwit as the wood type by island × year fixed effect

Introduction

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Data

The Model

Estimation

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Results (MODIS Data)

All ForestNumber of districts in province 0.039**

(0.016)Observations 608Number of districts in province 0.082**(sum of L0-L3)

(0.020)Observations 608

* p < 0.1; ** p < 0.05; *** p < 0.01

Table : Effects on quantities

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Data

The Model

Estimation

Results

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Results (Official Production Data)

All wood observationsLog price Log quantity

Number of districts in province -0.017 0.084*(0.012) (0.044)

Observations 1003 1003Number of districts in province -0.034** 0.135**(sum of L0-L3)

(0.013) (0.056)Observations 1003 1003

* p < 0.1; ** p < 0.05; *** p < 0.01

Table : Effects on prices and quantities

Introduction

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Analysis

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Data

The Model

Estimation

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Further Specifications: Substitutes

E(deforestdit) = µdiexp

(

βPCOilandGasdit+γNumDistrictsdit + ηit

)

(13)

◮ PCOilandGasdit per-capita oil and gas revenuereceived by the district

Introduction

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Data

The Model

Estimation

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Further Specifications: Substitutes

E(deforestdit) = µdiexp

(

βPCOilandGasdit+γNumDistrictsdit + ηit

)

(13)

◮ PCOilandGasdit per-capita oil and gas revenuereceived by the district

All forestOil and gas revenue -0.003**per capita (0.002)Observations 6464

* p < 0.1; ** p < 0.05; *** p < 0.01

Table : Substitutes

Introduction

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Analysis

Background

Data

The Model

Estimation

Results

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Implications

Conclusions

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

= semi elasticities

Introduction

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Analysis

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Data

The Model

Estimation

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Policy

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

= semi elasticities

1Q

dQdn

1P

dPdn

=

dQQ

dPP

=dQ

dP·P

Q(15)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

= semi elasticities

1Q

dQdn

1P

dPdn

=

dQQ

dPP

=dQ

dP·P

Q(15)

= price elasticity of demand

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

= semi elasticities

1Q

dQdn

1P

dPdn

=

dQQ

dPP

=dQ

dP·P

Q(15)

= price elasticity of demand

official production data: -5.24

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

interpretation of coefficients of OLS regression

dlnQ

dn=

1

Q

dQ

dnand

dlnP

dn=

1

P

dP

dn(14)

= semi elasticities

1Q

dQdn

1P

dPdn

=

dQQ

dPP

=dQ

dP·P

Q(15)

= price elasticity of demand

official production data: -5.24MODIS data: -2.27

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

Recalling:

1

Q

dQ

dn=

1

n2 − nλfrom theoretical framework (16)

=1

n2 − n1ǫ

(17)

Introduction

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Analysis

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Data

The Model

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

Recalling:

1

Q

dQ

dn=

1

n2 − nλfrom theoretical framework (16)

=1

n2 − n1ǫ

(17)

on average 5.5 districts per province (our n)

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

Recalling:

1

Q

dQ

dn=

1

n2 − nλfrom theoretical framework (16)

=1

n2 − n1ǫ

(17)

on average 5.5 districts per province (our n)

⇒ MODIS data set: 0.034

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Goodness of the model

Recalling:

1

Q

dQ

dn=

1

n2 − nλfrom theoretical framework (16)

=1

n2 − n1ǫ

(17)

on average 5.5 districts per province (our n)

⇒ MODIS data set: 0.034

⇒ Model gives exact short run predictions of semielasticities

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Policy strategies

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Policy strategies

◮ export ban of raw logs

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Policy strategies

◮ export ban of raw logs

◮ permit for trees cut and not trees transported→ tell firms where to log

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Policy strategies

◮ export ban of raw logs

◮ permit for trees cut and not trees transported→ tell firms where to log

Other approaches

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Policy Implications

Increase π

◮ increase top down monitoring

◮ creation of monitoring institutions

◮ harder punishments

Policy strategies

◮ export ban of raw logs

◮ permit for trees cut and not trees transported→ tell firms where to log

Other approaches

◮ educate people about consequences

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Conclusions

1. Satellite data do have additional explanatory power

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

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Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Conclusions

1. Satellite data do have additional explanatory power

2. decentralization even increases corruption

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Conclusions

1. Satellite data do have additional explanatory power

2. decentralization even increases corruption

3. subdividing jurisdictions can lead to moredeforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Conclusions

1. Satellite data do have additional explanatory power

2. decentralization even increases corruption

3. subdividing jurisdictions can lead to moredeforestation

4. standard economics models help to explain illegalbehavior

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Conclusions

1. Satellite data do have additional explanatory power

2. decentralization even increases corruption

3. subdividing jurisdictions can lead to moredeforestation

4. standard economics models help to explain illegalbehavior

5. infer actions to counteract corruption from model

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Questions

◮ why does deforestation increase in particular illegalzones?→ role of roads and infrastructure in general

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Questions

◮ why does deforestation increase in particular illegalzones?→ role of roads and infrastructure in general

◮ measurement: legal logging taking place via fellingindividual trees

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Questions

◮ why does deforestation increase in particular illegalzones?→ role of roads and infrastructure in general

◮ measurement: legal logging taking place via fellingindividual trees

Doubts and other explanations of deforestation

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Questions

◮ why does deforestation increase in particular illegalzones?→ role of roads and infrastructure in general

◮ measurement: legal logging taking place via fellingindividual trees

Doubts and other explanations of deforestation

◮ decline in enforcement

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Questions

◮ why does deforestation increase in particular illegalzones?→ role of roads and infrastructure in general

◮ measurement: legal logging taking place via fellingindividual trees

Doubts and other explanations of deforestation

◮ decline in enforcement

◮ changes in legal logging quotas

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Edward B Barbier, Nancy Bockstael, Joanne C Burgess,and Ivar Strand. The linkages between the timbertrade and tropical deforestation-indonesia. The World

Economy, 18(3):411–442, 1995.

Robin Burgess, Matthew Hansen, Benjamin A Olken,Peter Potapov, and Stefanie Sieber. The politicaleconomy of deforestation in the tropics*. TheQuarterly Journal of Economics, 127(4):1707–1754,2012.

Peter Dauvergne. The politics of deforestation inindonesia. Pacific Affairs, pages 497–518, 1993.

Fitria Fitrani, Bert Hofman, and Kai Kaiser*. Unity indiversity? the creation of new local governments in adecentralising indonesia. Bulletin of Indonesian

Economic Studies, 41(1):57–79, 2005.

Benjamin A Olken. Corruption and the costs ofredistribution: Micro evidence from indonesia. Journalof public economics, 90(4):853–870, 2006.

Introduction

Literature

Analysis

Background

Data

The Model

Estimation

Results

Policy

Implications

Conclusions

References

Christoph Schulze - Masterseminar: Topics in Empirical Public Economics

Charles Palmer. The extent and causes of illegal logging:An analysis of a major cause of tropical deforestationin indonesia. 2001.

Marcio Santilli, Paulo Moutinho, Stephan Schwartzman,Daniel Nepstad, Lisa Curran, and Carlos Nobre.Tropical deforestation and the kyoto protocol.Climatic Change, 71(3):267–276, 2005.

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