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Cool trees as basis for farmers' mitiadaptation

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Presentation by Meine van Noodwijk at a side event hosted by the World Agroforestry Centre at the UNFCCC Paris COP21

Publicado en: Medio ambiente
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Cool trees as basis for farmers' mitiadaptation

  1. 1. Cool trees as basis for farmers’ mi/gadapta/on Ecosystem-based adapta/on, Rio Pavillion COP PARIS 02-12-2015 Meine van Noordwijk Chief Scien/st, World Agroforestry Centre (ICRAF); Professor of Agro- forestry, Wageningen University Long cycle: oceans to land Short cycle: Land to land
  2. 2. Three things got separated that belong together •  Trees and farmers •  Climate and rainfall •  Climate change mi/- ga/on and adapta/on Agroforestry Biological rainfall generation Mitigadaptation
  3. 3. Decarbonizing the debate on forests, trees and climate: cool trees Trees make it cooler , help with rainfall and keep the soil moist UNFCCC: global climate change depends on greenhouse gas emissions This carbon thing is hard to understand, we can’t see it…
  4. 4. van der Ent RJ, Savenije HHG, Schaefli B, Steele- Dunne SC, 2010. Origin and fate of atmospheric moisture over con/nents. Water Resources Research 46, W09525, E/P Pfrom Et/P
  5. 5. Blue water streamflow Rainfall triggering conditions Precipi- tation Rainbow water Atmospheric transport Soil & ground-water buffering GreenwaterET evapotranspiration Precipi- tation GreenwaterET evapotranspiration Blue water streamflow Soil & ground-water buffering
  6. 6. Stem-flow Through -fall Rainfall Cloud interception Lateral outflows (interflow) Recharge Soil surface evaporation Transpiration Canopy water evaporation Uptake Quick- flow Base flow { Surface run-on Surface Run-off Streams & river Litter layer Sub- surface lateral inflows Infil- tra- tion Percolation Canopy inter- ception
  7. 7. •  Trees consume water •  Trees recycle water •  Trees help store water by changing soil to be a more effec/ve buffer •  Streamflow from healthy catchments with forests and trees is more gradual Higher evapotranspi- ra/on means more cooling effect Higher evapotranspi- ra/on means more atmospheric water vapour Prevailing winds Bio/c-pump-induced air flows? Oceanic input Biological precipita/on triggers? Rainfall Downstream water use, livelihoods risks and benefits Scien1- fic debate Downstream and downwind benefits of watershed restora/on
  8. 8. Three things got separated that belong together •  Trees and farmers •  Climate and rainfall •  Climate change mi/- ga/on and adapta/on Agroforestry Biological rainfall generation Mitigadaptation

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