agroforestry for climate change adaptation and mitigation
DESCRIPTION
By Rodel D.Lasco and Florencia B.PulhinWorld Agroforestry Centre (ICRAF)More at http://ecosolutionsmanila.blogspot.comTRANSCRIPT
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RD Lasco 1
Agroforestry for Climate Change Adaptation and Mitigation
Rodel D. Lasco and Florencia B. PulhinWorld Agroforestry Centre (ICRAF)
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Outline
• Agroforestry and climate change adaptation
• Agroforestry and climate change mitigation
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I. Introduction
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RD Lasco 4Source: Dolom, 2006; Adapted from Environmental Science for Social Change, 1999
Extent of Forest Cover Loss for the last 100 years
70 % 60 % 40 %
34 % 23.7 % 18.3 %
The vanishing Philippine forests…
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Imperata grasslands cover > 2 M ha
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18-20 M people live in the uplands
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Basic Concepts (IPCC, 2007)
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II. Agroforestry and Climate Change Adaptation
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Global context (IPCC, 2007)
• Planet’s warming is unequivocal• Adaptation will be necessary to address
impacts resulting from the warming which is already unavoidable due to past emissions.
• A wide array of adaptation options is available, but more extensive adaptation than is currently occurring is required
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Impact of Climate ChangeImpact of Climate ChangeAdditional people withIncreased water stress (5(500C)C)
20 to 30% species at inc. high risk of extinction (2(2--3300C)C)
Decrease (low latitudes) (1(1--2200C)C)
30% loss of coastal wetlands(3(3--4400C)C)
Increased mortality due to heatwaves, floods and drought ((1100C)C)
Reconfiguration of coastlines and Reconfiguration of coastlines and inundation of lowinundation of low--lying areas (5lying areas (500C)C)
Increase (mid & high latitudes) (1(1--2200C)C) (impact is beneficial)
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RD Lasco 12PAENG
QUEENIE REMING
THE PHILIPPINES HIGHLY VULNERABLE TO CLIMATE EXTREMES
DENR, 2007
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Basic Concepts (IPCC, 2007)
CC adaptation- Adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities.
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What is Agroforestry?
• a land-use system in which woody perennials are deliberately used on the same land management unit as agricultural crops, animals or both
• Trees on farms!
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Key Attributes of AF Systems
• Maintain or enhance productivity (economic benefits)
• Maintain or enhance environmental quality (environmental benefits)
• Be acceptable to local farmers and communities (social benefits)
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AF promotes CC adaptation of small farmers
• Trees on farms enhance coping capacity of small farmers to climate risks
• Through crop and income diversification• Soil and water conservation• Efficient nutrient cycling and conservation
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Alley or hedgerow cropping
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Contour hedgerow systems: Uses and benefits
• Erosion control• Organic fertilizer• Fuel wood• Fodder for ruminants
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Natural vegetative strips (NVS) in Claveria
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Nueva Viscaya province: mahogany in grasslands
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Leyte island: contour planting with trees
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Isabela Province: tree planting
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East Timor: multisotrey
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Bukidnon: multistorey agroforestry farm
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Claveria: tree farms
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Banuae rice terraces
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Coffee under shade trees
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Cacao under shade trees
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Environmental benefits
• Reduced siltation of water bodies• Reduced land degradation and
desertification• Biodiversity
– More trees on farm– Reduced habitat destruction
• Beauty (eco-tourism)• Climate change mitigation
– Carbon sequestration– Remaining forests and other natural covers
saved
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RD Lasco 30From Lassoie
Socio-Economic Benefits
• Increased income opportunities• Diversify products and reduce risk• Reduce establishment costs• Reduce inputs of chemical pesticides and
fertilizers• Distribute labor needs• Improve human nutrition and health• Enhance community development
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III. Agroforestry and Climate Change Mitigation
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Basic Concepts (IPCC, 2007)
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The Carbon Cycle
IPCC 2007
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Atmosphere
Fossil Deposits6.3
62.3
60
3.3
Plants
Soil
Oceans
750
500
2000
39,000
About 16,000
92.3
90
1.6
TheGlobal Carbon Cycle
UnitsGt C andGt C y-1
Net accumulation
Fossil emissions
Deforestation (20%)
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CO2
PhotosynthesisBurning
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BIOMASS IS ABOUT 50% CARBON BY WEIGHT
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ABOVE-GROUND BIOMASS
TREES
UNDERSTOREY
NECROMASSLITTER
ROOTS SOIL CARBON
Carbon pools in forest ecosystems
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0
20
40
60
80
100
120
140
160
180
tC/ha
OGF SGF Gmelina (6yr) Agroforestry Grassland
Fig. Carbon density of various land cover in the project site
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189 (48%)
3.5 (0.9%)
4.8 (1.2%)
Roots = 4.3 (1.1%)
Total C density= 393 t/ha
SOC= 191 (49%)
Carbon density (t/ha) of natural forests in Leyte, Philippines
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106 (37%)
1.7 (0.6%)
1.3 (0.5%)13.2 (4.7%)
Roots = 0.7 (0.2%)
Total C density= 283 t/ha
SOC= 160 (57%)Carbon density (t/ha) of a mangium plantation in Leyte, Philippines
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0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
tC/ha/yr
OGF SGF Gmelina Eucalyptus Acacia Mahogany Dipterocarp Agroforestry Grassland
Fig. Carbon MAI of various land cover in project site
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Forest land cover distribution in the Phillippines (total area= 15.9 M ha) (Source: Lasco and Pulhin, 2000; FMB, 1996)
Protection forest17%
Secondary forest18%
Grasslands 13%
Brushlands15%
Plantations3%
Upland farms34%
“Forest” lands that need trees
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Co-Benefits of CDM Forestry Projects
• Ecological and socio-economic benefits to local communities
• Agroforestry promotes climate change adaptation
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In Summary…
• Agroforestry systems enhance adaptive capacity of small farmers
• The Philippines has huge potential for change mitigation through agroforestry
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Thank You!!!