Regional Consequences of Climate and Land Use Change on Ecosystem Services in Pennsylvania

Benjamin Felzer

Outline of Talk

• Introduction: Environmental Stresses and Ecosystem Services• Description of Tools: Models and Data• Model Validation• Role of climate and land use change in PA• Future climate extremes and flooding in the Lehigh Valley• Historical Multiple Factorial Effects in the Mid-Atlantic

Environmental Stresses

• Rising atmospheric CO2

• Climate variability and change• Land use cover and change• Nitrogen deposition and fertilizer• Ozone near surface

CO2 and Climate

(Raich et al., 1991)

Forest RegrowthPoplar, WI

Pine, FL

(Pan et al., 2002)

Nitrogen and Ozone

(Magnani et al., 2007) (Lombardozzi et al., 2012)

Tulip Poplar

Carbon Accounting

Net Ecosystem Productivity (NEP) = NPP – rh

where NPP = Net Primary Productivity

rh = heterotrophic respiration

Net Carbon Exchange (NCE) = NEP – ec – ep

where ec = carbon lost due to conversion

ep = carbon lost due to decomposition of products

Positive NEP, NCE means land is carbon sink

Generally neutral (Odum, 1969) or small sink (Luyssaert et al., 2008) or small source (Law et al. 2004) for mature forest.

Description of Tools: Models and Data

• Biogeochemical Model (TEM-Hydro)• Climate Data• Land Cover Data

Vegetation

Carbon

Nitrogen

GPP Rg Rm

CarbonNitrogenSoil

LTRNN uptake

Carbon

Atmosphere

Precip.

Soil Evap.

Transp.

Runoff

TEM-Hydro Model

(Felzer et al, 2009, 2011)

Disturbance

• Cohort Approach• Slash: input to soils• Residue: to atmosphere• Product Pools (1, 10, 100 years): decomposition rates

Open Nitrogen

• Inputs: N fixation, N deposition, N fertilizer• Outputs: Leaching of Dissolved Organic

Nitrogen (DON) and Dissolved Inorganic Nitrogen

Inputs and Calibration

• Climate (Cloud or Radiation, Temperature, Precipitation, ozone, carbon dioxide (global annual value))

• Vegetation Cohorts• Soil and Elevation (static)• Calibration of carbon and nitrogen parameters to target values

of carbon and nitrogen stocks and fluxes

Climate Data

Dataset Spatial Res.

Temporal Res.

Time Period

Scenario

CRU 0.5o Monthly 1901-2009 historical

PRISM 1/24o Monthly 1890-2013 historical

CMIP3(Maurer)

1/8o Monthly 1950-2099 A2, A1B, B1

Hurtt Dataset

Model Validation

• Streamflow at Watersheds• Eddy Covariance (Ameriflux) NEE (Net Ecosystem

Exchange) and ET (Evapotranspiration)• Gridded Datasets combining Eddy Covariance and Remote

Sensing (EC-MOD, Fluxnet-MTE)

(Felzer et al., 2009)

Eastern U.S. Forests

(a) (b)

(c) (d)

Willow Creek, WI

Felzer and Sahagian, Climate Research, in review

Validation: without land use disturbance

Trend Comparison: Evapotransporation

Accounting for significant, 72% grids Not accounting for significant, 60% grids

Felzer and Sahagian, Climate Research, in review

Seasonal Validation

PA Study

Note: Future is A2

Forest Urban Crops Pasturerunoff

(kg(H2O)/m2/yr)303 555 440 413

DIN Leach

(gN/m2/yr)383 492 4060 941

Rodale-based Dairy Farm Parameterization

(Jiang and Zhang, in prep.)

GPP: 1020 g C yr-1 m-2 NPP: 466 g C yr-1 m-2

Ra: 554 g C yr-1 m-2 Rh: 1685 g C yr-1 m-2

Available N: 3.3 g N m-2 Soil C: 2559 g C m-2 Soil N: 360 g N m-2

Vegetation C: 922 g C m-2

Vegetation N: 57.8 g N m-2

Measured Rodale dairy pasture targeting values

Historical NCDC storm statistic

Future bias-corrected NCAR CESM storm statistic

HEC-HMS peak stream discharge

Monocacy Creek

HEC-RASFlood Profiles

Flooding in Lehigh Valley

(Felzer, Schneck, Withers, and Holland in preparation)

24 Hour Storm Event (inches)

(Dangal et al., 2013)

Effects of Human Disturbance on Carbon: Eastern U.S.

1700 1750 1800 1850 1900 1950 2000-30000

-25000

-20000

-15000

-10000

1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000-4000

(Table from Dangal et al., 2013)

Net Ecosystem Productivity (NEP) Validation

Site ID EC NEE Biometric

DIST NEP UND NEP

% diff.

RMSE NC

DUK 489 NA 321 140 -34 54 -0.67WLK 750 252 360 180 -52 62 0.50WIL 360 106 150 50 -58 59 0.60UMBS 170 73 189 80 11 61 0.51

Multifactorial Experimental Design for MidAtlantic

LULC CO2 Climate O3 Ndep

S2 X X

S3 X X X

S4 X X X X

S5 X X X X X

S1-S0 = LULCS2-S1 = CO2

S3-S2 = ClimateS4-S3 = O3

S5-S4 = Ndep

Net Carbon Exchange from 1700

1700 1750 1800 1850 1900 1950 2000

-14000

-12000

-10000

LULC CO2 Climate O3 NDep year vs LULC

Net Carbon Exchange from 1900

1900 1920 1940 1960 1980 2000

LULC CO2 Climate O3 Ndep year vs Total

Cumulative NCE from1929

1940 1960 1980 2000

LULC CO2 Climate O3 Ndep year vs Total

Photosynthesis Transpiration

ElevatedCO2

Nitrogenlimitation

Ozoneexposure

Runoff

Feedbacks of Carbon on Water

gc = gmin LAI + ga (GPP) (RH) / [CO2]Ball-Berry Model:

positive coupling: amplifying

negative coupling: dampening

Key Results• Increased urbanization and climate change in PA results in more

runoff while increased urbanization results in more DIN leaching• Useful to use future storm scenarios to determine enhanced

flooding in local watersheds• Comparing models to eddy covariance data requires accounting

for forest disturbance• Carbon storage has decreased due to LULC, climate, and ozone,

but increased due to CO2 and Ndep in the Mid-Atlantic since 1700

• Runoff has increased due to LULC and slightly due to CO2 and ozone

• Model underestimating carbon sink?

Thanks!

M.S. Students: Shree Dangal

Ph.D. Students: Mingkai Jiang, Jien Zhang, Travis Andrews

Postdoc: Eungul Lee

Research Associate: Zavareh Kothavala

Undergraduates: Lauren Schneck, Cathy Withers, David Kolvek, Trista Barthol, Peter Phelps, Jonathan Chang

Co-Authors: T. Cronin, J. Melillo, D. Kicklighter, A. Schlosser, D. Sahagian, M. Hurteau

Assistance: B. Hargreaves, D. Morris, D. Sahagian

Funding Agencies: MIT, Westwind Foundation, Lehigh University, DOE (Basic Research and Modeling to Support Integrated Assessment), NSF (Macrosystems Biology).

Computational Time: NSF Yellowstone supercluster at Computational and Information Systems Laboratory (CISL)

DOC DON

AvailN

DOCprod DONprod

LeachDOC LeachDON LeachDIN

VegNup

LtrC VEGNLtrN

NetNmin

Soil Organic Matter

GPP Ra

SymbioticNfix

NonSymbioticNfix

TEM-Hydro Reduced Form Open Nitrogen

TEM Inputs

Transient Datasets• Cloud or Radiation, Temperature, Precipitation, ozone,

carbon dioxide (global annual value)• Vegetation cohorts

Static Datasets• soil texture, elevation

Parameter Files• soil, rooting depth, vegetation, vegetation mosaics, leaf,

microbe, agriculture, calibrated biome files

TEM Calibration

Stocks• Vegetation Carbon, Vegetation Nitrogen, Soil Organic Carbon,

Soil Organic Nitrogen, Soil Inorganic Nitrogen

Fluxes• NPP, N-saturated NPP, GPP, Plant Nitrogen Uptake

Parameters• CMAX (photosynthesis), NMAX (N uptake), KD (heterotrophic

respiration), NUP (Net N mineralization), KR (autotrophic respiration)

Climate Data

Historical 20th century• CRU (Climatic Research Unit) 0.5o, monthly,1901-2009• PRISM (Parameter-elevation Regressions on Independent

Slopes) 1/24o, monthly, 1890-2013

Future IPCC Scenarios• AR4: A2, (A1B, B1)• Downscaled/Bias-Corrected Surface Temperature and

Precipitation CMIP3 (Maurer): 1/8o, monthly, 1950-2099• Delta/Ratio downscaling of Vapor Pressure and Net Irradiance

Carbon

Vegetation

Labile Pool

GPP Rg Rm

Atmosphere

Allocation

Active Stem

Inactive StemRoot

Senescence

(Felzer et al, 2009, 2011)

Nitrogen

Vegetation

Labile Pool

Allocation

Active Stem

Inactive StemRoot

Senescence

OrganicMineralImmobilization

Mineralization

Nresorb

(Felzer et al, 2009, 2011)

Vegetation

Atmosphere

Precip.

Soil Evap.

Transp.

Runoff

WiltingPoint

Field Capacity

Soil: Bucket Model

stomatalresistance

leaf-to-canopyaerodynamic resistance

soil internal resistance

soil-to-canopyaerodynamicresistance

canopy-to-screen heightaerodynamic resistance

Soil Evap.

Transp.

Shuttleworth-Wallace method

Screen height, known T, VPRCanopy airspace, in contact with leaves and soilSurface of “big leaf”

Soil Surface

(Felzer et al, 2009, 2011)

Regional Consequences of Climate and Land Use Change on Ecosystem Services in Pennsylvania

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