1 / 18

By Pieter van Eijk, Copenhagen, December 2009

Wetlands for mitigation and adaptation. &. An overview. By Pieter van Eijk, Copenhagen, December 2009. Contents. The importance of wetlands for adaptation and mitigation Mangroves Saltmarshes Seagrasses Inland wetlands Examples of ecosystem-based approaches

elinor
Télécharger la présentation

By Pieter van Eijk, Copenhagen, December 2009

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Wetlands for mitigation and adaptation & An overview By Pieter van Eijk, Copenhagen, December 2009

  2. Contents • The importance of wetlands for adaptation and mitigation • Mangroves • Saltmarshes • Seagrasses • Inland wetlands • Examples of ecosystem-based approaches • Conclusions and policy recommendations

  3. Mangroves: mitigation Large stocks in living biomass Up to160 T C/ha

  4. Mangroves: mitigation But also below-ground storage: 2.67 T C/ha/yr Net Primary Productivity13.8 T/ha/year Source IUCN 2009 POC/DOC 1.17 T C/ha/yr 10 T C/ha/yr: fate unknown

  5. Mangroves: adaptation • Mitigating storm damage:1.5 metre waves eliminated; Tsunami research: 6 metre high waves largely absorbed • Withstand annual sealevel rise of up to 3-9 mm • Reducing erosion: Red cross mangrove planting in Vietnam:€ 1 million investment € 7 million annual return from reduced maintenance works

  6. Saltmarshes: mitigation & adaptation Little storage in biomass, a lot in soils! Unknown decomposition Unknown outflow Net Primary Productivity0.6 - 8.12 T C / ha/year Source IUCN 2009 POC/DOC Adaptation potential: • Prevention of storm damage and erosion • Economic value of US saltmarshes for storm protection: 250- 51.000 USD/ha/year 2.1 T C/ha/yr

  7. Seagrasses: mitigation & adaptation Significant storage in root biomass (70 T C/ha), some in soils ~68% Net Primary Productivity 4 - > 8 T/ha / year Source IUCN, 2009 POC/DOC ~24% ~ 0,83 T C/ha/yr Adaptation potential: • Reducing erosion and wave power

  8. Freshwater wetlands Mitigation: Adaptation: • Peatlands and forested wetlands: large carbon stocks • Rather small stocks in other freshwater systems • Methane emissions can be high • Mitigating floods, droughts and fires • Preventing saltwater intrusion • Supporting food production

  9. 1. Creating coastal mangrove buffers > 2000 ha planted

  10. 1. Creating coastal mangrove buffers Our mangrove sites after 1 year…

  11. 1. Creating coastal mangrove buffers Our mangrove sites after 7 years…

  12. 1. Creating coastal mangrove buffers Our mangrove sites after 10 years…

  13. 2. Restoring peatland functions 2003 2006 Ruoergai peatlands china – Avoided emissions and restored water regulation for millions downstream

  14. 3. Increasing water retention capacity Wular lake, India: Management plan to increase water retention capacity by 25%: buffering of floods and droughts 1911 2007 ? Lar Haigam Cannal Manasbal Jhelum R.

  15. 4. Hybrid engineering Design by DHV Consultancy & Engineering Waddenworks (Netherlands): Linking hard- and soft infrastructure

  16. Conclusions • Ecosystem-based adaptation and mitigation: Crucial, cost-effective and multiple side benefits • Not the only solution: link to community- and engineering-based approaches • More research needed to reveal their full potential

  17. Policy recommendations • Explicit recognition in adaptation and mitigation policies and planning • Avoid maladation: other measures should not negatively impact on ecosystem functioning • Include sustainability guidelines in adaptation funding frameworks: Strategic Environmental Impact asessments?

  18. More Information? www.wetlands.org Pieter.vanEijk@wetlands.org

More Related