1as Jornadas do Projeto INTERACT

Evaluation of the residual agro-forestry biomass existing in the Ave and

Sabor watershedBolseira: Teresa Enes

Orientadores: José Lousada, José Aranha e Domingos Lopes

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6INTERACT - Integrative Research in Environment, Agro-Chains and Technology

Research Line 3 – By-products, Waste Management and Valorisationof Agrarian Chain Production

• Project 4 – Biomass valorisation

Grant - BI/UTAD/INTERACT/BEST/227/2016

BIO-ECONOMY AND SUSTAINABILITY (BEST)

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Introduction

Agro-forest systems support fundamental economic activities to theNorth of Portugal, such as the production of wine, fruits, cereals,livestock, forest biomass for wood or energy purposes.

Domestic production of renewable energy from agro-forestry biomass is extremely important:

• represents less environmental impacts;

• They encourage the development of the national economy and diversify energy sources;

• helps to reduce CO2 emissions helping to meet the Kyoto commitments;

• reduces the risk of forest fires.

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Objectives

1) Evaluation and characterization of the different types of agro-forestry biomass in Northern Portugal;

2) Evaluation of the efficiency of different energy use processes for each type of biomass;

3) Development of technologies for combustion, pyrolysis and gasification appropriate to each type of biomass;

4) Socio-economic evaluation of the use of agro-forestry biomass as a substitute for fossil fuels.

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6Study area location

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Methodologies

• Biophysical characterization of the study area:

Altimetry, Slope, Aspect, Climatology, road network and forest fires temporal occurrence.

• Land cover analyses (COS 2007)

Quantification of Forested and Agricultural areas.

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6Methodologies (objective 1)

Agricultural areas

Identification and distribution of mainspecies/crops

Estimation of the area occupied by each species/crops

Estimates of residual biomass by means ofthe Páscoa et al. 2006 method, previews

presented

Literature Review on annual average residual productions for each crop – National

Agricultural Directory

Area * residual biomass = Total anual Production

Forested areas

Residual Biomassfrom Forested areas

Residual Biomass fromAgricultural areas 7

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Collection of forest and agricultural waste samples

Evaluation of ChemicalComposition

(CHONS)

Evaluation of the heating value

Methodologies (objective 2 - Evaluation of the efficiency of different energy use processes for each type of biomass )

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6Preliminary Results on study area analysis: Slope

Slope classes (%) Area (%)

0 - 5 14

5 - 10 26

10 - 15 22

15 - 20 15

20- 25 10

25 - 30 6

>30 7

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6Preliminary Results on study area analysis: Slope

Slope classes (%) Area (%)

0 - 5 10

5 - 10 23

10 - 15 20

15 - 20 15

20- 25 10

25 - 30 7

>30 15

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Forested areas – 70 192 ha

(50% Total area)

Agricultural areas – 41 000 ha

(30% Total area)

Preliminary Results on study area analysis: Land cover

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Forested areas – 145 000 ha (60% total area)

Agricultural areas – 89 000 ha (37% total)

Preliminary Results on study area analysis: Land cover

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6Maritime pine stands location within the study area

Maritime pine – 3 280 ha

(5% total forested area)

• Pure stands

• Seedling and mature stands

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6Maritime pine stands location within the study area

Maritime pine– 13 000 ha

(9% total forested Area)

14

• Pure stands

• Seedling and mature stands

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6Shrublands location within the study area

Shrublands: 12 190 ha

(17% Forested Area)

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6Shrublands location within the study area

Shrublands: 70 192 ha

(49% Forested Area)

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Previews presented studies about North of Portugal

Age (years)

N (trees/ha)

h (m)

biomass(ton/ha)

Maritime pine (natural regeneration)

5 4800 2 60

Maritime pine 20 600 18 6,3

biomass (30% moisture)

Tops and branches

RegionAge

(years)biomass

(ton/ha)

Trás os Montes 5 11,2

Minho 5 6,4

Shrub landsForested lands

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6Ave general view landscape

Sabor general view landscape

Thank you …. 18

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