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ISRIC Green Water Team Sjef Kauffman Godert van Lynden Zhanguo Bai

Green Water Credits. ISRIC Green Water Team Sjef Kauffman Godert van Lynden Zhanguo Bai. Water and Sustainable Land Management. Instead of a narrow focus on surface and ground (“ blue ”) water alone,

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ISRIC Green Water Team Sjef Kauffman Godert van Lynden Zhanguo Bai

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  1. Green Water Credits ISRIC Green Water Team Sjef Kauffman Godert van Lynden Zhanguo Bai

  2. Water and Sustainable Land Management • Instead of a narrow focus on surface and ground (“blue”) water alone, more attention is needed for the greenwater component: water in the soil available for plant growth; • The green water component comprises at an average 2/3 of total rainfall (Falckenmark and Rockstrom, 2006);

  3. Starting points • Key resource is rain water • Farmer can improve local water balance • Upstream land management is linked to downstream water availability • Farmers are key and need support to make investments • How can we support the farmers?

  4. More water cannot be created, but: • Current land management practices show wasting of rain water by : • high rates of surface runoff enhancing flash floods and erosion, and • large losses by evaporation of water directly from bare soil (up to 60% of rainfall!) • Blue water can be better managed by good soil & water management: • reducing runoff and erosion, • more infiltration, • less unproductive evaporation, • more water for plant growth

  5. Better soil and water management can also greatly increase water supply downstream and improve rural livelihoods

  6. Farmers know the benefits from green water management, but need incentives to cover the costs/ labour Green Water Creditsbridge the incentive gap: Compensation by water users to water providers for specified water management services

  7. Targets/Potential benefits

  8. Who and where are the key players?

  9. 4 Work Domains • Biophysical analysis • Socio-economic study • Institutional inventory • Financial Mechanism

  10. Estimated increase in hydro-power from green water management (50% cut in erosion/siltation) 100 000 GJ = 51 000 barrels oil = $ 5.8 million

  11. Green Water Credits (Algeria, China?, Ethiopia??, Burundi??) (Morocco) (Kenya)

  12. Results • Started 2006 • Currentlyimplemented in • Kenya, Upper Tana Basin (Phase II, till Sept. 2011: Project Design) • Morocco: Sebou Basin (Phase I, till Sept. 2011: Proof of Concept) • Algeria(Project preparation) • China, (Proposal)

  13. Upper Tana, Kenya

  14. Sebou Basin, Morocco

  15. WOCAT in GWC

  16. Examples from WOCAT database (> 350 technologies worldwide)

  17. CONCLUSIONS • GWC is a financial facility to support farmers in soil and water conservation activities: • For initial investments (short term) • For maintenance investments (long term) in appropriate green water management • Where downstream water users compensate farmers upstream for the benefits derived from appropriate soil and water management

  18. More information... www.isric.org www.greenwatercredits.net www.wocat.net Godert.vanlynden@wur.nl Sjef.Kauffman@wur.nl Zhanguo.Bai@wur.nl

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