Development of agroecological systems based on biodiversity and ecosystem services
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Transcript of Development of agroecological systems based on biodiversity and ecosystem services
Development of agroecological systems based on biodiversity and ecosystem services
Alain PeetersRHEA Research Centre, Belgium
Brussels
Paris
The action research project
Ecological strategy of agroecology
• Replacing fossil fuels by ecosystem services provided by biodiversity
• Investing in biodiversity at all levels
Ecological strategy of agroecology
• Relying on local resources• = endogenous soil fertility• ≠ massive use of commercial inputs
• Intensive in observations, thinking and knowledge
Ecological strategy of agroecology
Higher resilience to climate change Mitigation of climate change by carbon storage
and lower GHG emissions
Economic and social strategy of agroecology
Costs Revenue
Benefits
Economic and social strategy of agroecology
Decreasing costs
Costs Revenue
Benefits
Out-wintering pad = low investment
Economic and social strategy of agroecology
Decreasing costs
Increasingrevenue
Costs Revenue
Benefits
Economic and social strategy of agroecology
Decreasing costs
Increasingrevenue
Costs Revenue
Benefits
Developing the ecological network
Pest suppressive ecological infrastructures
Role of herbaceous strips Natural enemies of crop pests and wildlife habitat
Plot division60m-wide plots separated by 3m-wide herbaceous strips
Long and diverse crop rotation
Alternance of legumes with non-legume crops
Organic non-inversion tillage system with a continuous soil cover
Biomax in intercropping between two main crops
Agroecological techniques
Biomax = Maximum of Biomass and Biodiversity
Biomax rolled and crop sown in one single operation
Crop species and cultivar diversification
oats
triticale
pea
Non inversion tillageSuperficial soil works
Agroecological techniques
Fast positive effects on soil life
Grass-based
Full outdoorFeed self-sufficiencyLegumes
Rustic breeds: Angus cows and other breedsLong cycle rotational stocking
Livestock
Gross margins per ha AA € €
Gross margin without subsidies 897 ≈ 0
Subsidies 665
Gross margin with subsidies 1,562 300
Examples of economic performance of the agroecological system compared to conventional
arable farming (2015)
Agroecology Conv.
Social and societal aspects
‘Give biodiversity a chance!’
Thank you