agroecological approaches to increasing productivity and securing ecosystem services
DESCRIPTION
Global Review Speed PresentationTRANSCRIPT
Agroecological Approaches to Increasing Productivity and Securing Ecosystem ServicesKelly Garbach, University of California-
DavisFabrice DeClerck, Bioversity InternationalJeffrey Milder, EcoAgriculture PartnersToby Hodgkin, Platform on Agrobiodiversity
Research
Photo: IFAD
Source: Foley et al. 2011
Project objectives
1.Assess the current scale of agroecological intensification (AEI) approaches
2.Meta-review of outcomes:● Productivity● Ecosystem services
3.Global estimates of potential contribution of AEI to food supply & ecosystem services
●Conservation Agriculture ●Forest Farming●Mixed Crop Animal●Permaculture●Polyculture●Silvopastoral Systems●Agroforestry●No-Till Agriculture●System of Rice Intensification●Organic Agriculture●Holisitic Range Management
Examples of AEI Systems
●Conservation Agriculture ●Forest Farming●Mixed Crop Animal●Permaculture●Polyculture●Silvopastoral Syst.●Agroforestry●No-Till Agriculture●System of Rice Intens.●Organic Agriculture●Holisitic Range Mgmt.
●What practices does the AEI system include?
●What functions and services does the AEI system seek to achieve?
Examples of AEI Systems
●Conservation Agriculture ●Forest Farming●Mixed Crop Animal●Permaculture●Polyculture●Silvopastoral Systems●Agroforestry●No-Till Agriculture●System of Rice Intens.●Organic Agriculture●Holisitic Range Mgmt.
AEI Systems Practices
Crop rotation
Soil cover
Cons. tillage
Biol. pest controlMgmt.
native pollinators
Etc.
Erosion control
Nutrient retention
↓ Pollution
Yield vs. conventional
Etc.
Functions & servicesSoil fertility
Pollination
●Conservation Agriculture ●Forest Farming●Mixed Crop Animal●Permaculture●Polyculture●Silvopastoral Systems●Agroforestry●No-Till Agriculture●System of Rice Intens.●Organic Agriculture●Holisitic Range Mgmt.
AEI Systems
Erosion control
Nutrient retention
↓ Pollution
Yield vs. conventional
Etc.
Functions & servicesSoil fertility
Pollination
Practices
Crop rotation
Soil cover
Cons. tillage
Biol. pest controlMgmt.
native pollinators
Etc.
CoreUsualSometimesRareAt Odds
CoreUsualSometimesIncidentalNot pursued
Extent of global agricultural lands
Source: Foley et al. 2011
Conservation agriculture
Milder et al. 2011 .
landscape scale
agronomic practices other componentslandscape scale
farm scaleplot scale
•Minimize soil disturbance•Permanent soil cover•Diverse crop rotations
•Irrigation•Micro-scale H2O harvesting
•Holistic biomass management for livestock & soil fertility•Management for E.S.•Diverse crop rotations
•Farm-scale H2O harvesting •Mosaic of crop & non-crop areas
•Perennial vegetation•Management of shifting & permanent cultivation
•Watershed mgmt.•Formal & informal conservation areas (biodiversity & E.S.)
Area under conservation agriculture (no-till farming) by continent
Source: Derpsch et al. 2010
Benefits of conservation agriculture in Africa
Improved soil quality, labor reduced, reduced costs, increased cropping areaKenya
Labor reduced, income augmented, product diversity, increased biodiversityand resilient land-use systems, improved water quality and reduced erosion
Uganda
Improved soil structure and water retention, reduced need for chemical fertilizers, increased crop yield
Zambia
Data: Kaumbutho & Kienzle, 2007; Nyende et al., 2007; Haggblade & Tembo, 2003. Table: Milder et al. 2011
.
Thanks!
Fabrice DeClerck, Bioversity International [email protected]
Kelly Garbach, University of California-Davis [email protected]
Jeffrey Milder, EcoAgriculture Partners [email protected]
Toby Hodgkin, PAR