Trees on Farm: Global Extent and Socio-Ecological Characteristics a...

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Ad

Land
Robert Zomer, Antonio Trabucco, Jianchu Xu, Mingcheng Wang
Frank Place, Rick Coe, Henry Neufeldt, Deborah Bossio,
Mie...

How much agroforestry is there?
Where is it?

Agroforestry is Globally Important
• Increasingly cited in sustainable development, adaptation
and mitigation strategies a...

Issue: What is agroforestry
Landuse Category
• Many definitions of AF,
– systems, typologies, technologies
• Many types of...

Agroforestry defined as
trees in agricultural landscapes
Use remote sensed estimates of:
• Location of agricultural land
–...

The 1 km x 1 km scale of analysis
Example – a few
km from here.
- classified as
‘agricultural’
-  10% tree cover
-  400 ...

Disclaimers and
Sources of Uncertainity
• A global analysis showing large scale patterns,
not predictions of specific loca...

Agricultural land and tree cover
0
500000
1000000
1500000
2000000
2500000
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 5...

Agricultural land and tree cover
0
20
40
60
80
100
0
5
10
15
20
0 20 40 60 80 100
%agriculuralarea
cumulativearea(millionk...

Tree cover varies by region
0
20
40
60
80
100
0 20 40 60 80 100
cumulative%agricland
% tree cover
Central America
South Am...

People in agric land with tree cover
0
20
40
60
80
100
0
300
600
900
1200
1500
1800
0 20 40 60 80 100
%population
cumulati...

Global pattern of trees and people in
agricultural land
1.Every combination of
+/- tree cover and +/- population
occurs
2....

Aridity is a biophysical determinant
0
5
10
15
20
25
30
35
40
45
50
Averagetreecover(%)
Aridity Wetness Index
Central Amer...

Tree cover on agricultural land in
sub-saharan Africa varies

Feasible tree cover = observed on top 20%
of land with that population and climate

Difference = observed - feasible

Key messages - 2009
• Tree cover is a common feature on agricultural land
– Must be recognized by all involved in agricult...

• Improved Data
– 250 m MODIS
– Improved accuracy
• Temporal Analysis
– Annual Data
– 2000 to 2010
• Change Analysis
– Avg...

Change in Amount of Agricultural
Area with Tree Cover
From 2000 to 2010
• Globally, percent of land under at
least 10% tre...

Change in Population of
Agricultural Area with Tree Cover
From 2000 to 2010
• Globally, percent of population
under at lea...

Above and Below Ground
Biomass Carbon on Agricultural Land
Estimating The Contribution of Agroforestry to
Global, Regional...

Above and Below Ground
Biomass Carbon on Agricultural Land
Adding the missing trees !!
Combine Tree Cover Analysis with
th...

Total Global Biomass Carbon on Agricultural Land
• IPCC Default Value: 11.08 PgC
• 2000 : 45.30 PgC 2010 : 47.37 PgC Incre...

Biomass Carbon on Agricultural Land
Total Biomass Carbon Average Biomass Carbon
Total Agricultural
Area (km2)
Pg C Increas...

Above and Below Ground
Biomass Carbon on Agricultural Land
The Contribution of
Agroforestry to
National Carbon Accounting
...

• Brazil increasing by 14%
• Argentina’s stocks showed
the largest total decline
decreasing 20%, (0.18 PgC)
• On a per hec...

• Hot spot of of biomass
carbon loss along NW
coast of Myanmar
• Decreases southern
Vietnam, central Laos,
northeast Thail...

• Hot spots of of biomass
carbon loss in West Africa
• Sierra Leone - 25% decrease
• Guinea – 14% decrease
• Cameroon – 7%...

Above and Below Ground Biomass Carbon on Agricultural Land
The Contribution of Agroforestry to National Carbon Accounting
...

• Approximately 43% of agricultural land in 2010 had >10% tree cover
• Nearly one-billion hectares supporting more than 90...

http://www.worldagroforestry.org/global-tree-cover/
Global Tree Cover and Biomass Carbon on Agricultural Land Website
Than...

Trees on Farm: Global Extent and Socio-Ecological Characteristics and the Contribution of Agroforestry to Global and Natio...

You are reading a preview.

Activate your 30 day free trial to continue reading.

Share SlideShare

Facebook
Twitter
LinkedIn

Embed

Size (px)

Show related SlideShares at end

WordPress Shortcode

Link

LinkedIn
Facebook
Twitter
Email

Replay

Top clipped slide

1 of 32 Ad

1 of 32 Ad