Valuing Protective Services of Mangroves in the Philippines : Technical report
Mangroves and other coastal ecosystems act as natural defenses that protect people and property from storms, floods, erosion, and other coastal hazards, reducing coastal risk. Mangroves protect coastlines by decreasing the risk of flooding and eros...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Working Paper |
| Language: | English en_US |
| Published: |
World Bank, Washington, DC
2017
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| Subjects: | |
| Online Access: | http://documents.worldbank.org/curated/en/278971501667825477/Technical-report http://hdl.handle.net/10986/27666 |
| Summary: | Mangroves and other coastal
ecosystems act as natural defenses that protect people and
property from storms, floods, erosion, and other coastal
hazards, reducing coastal risk. Mangroves protect coastlines
by decreasing the risk of flooding and erosion. The roots of
mangroves retain sediments and prevent erosion, while the
prop roots, trunks and canopy reduce the force of incoming
wind and waves and reduce flooding. The Philippines has lost
hundreds of thousands of hectares of mangroves in the last
century. When mangroves are degraded or destroyed, the coast
line becomes more exposed to the destructive impacts of
waves and storm surge, and coastal communities have greater
risks from the impacts of storms, floods, and sea level
rise. The Philippines is at high risk from coastal hazards
and natural defenses can help reduce these risks. This
Technical Report, and its accompanying Policy Brief, provide
a social and economic valuation of the flood protection
benefits from mangroves in the Philippines. This work aims
to support decisions across development, aid, risk reduction
and conservation sectors as they seek to identify
sustainable and cost-effective approaches for risk
reduction. This Technical Report applies the Expected Damage
Function approach recommended by the World Bank to quantify
the risk reduction benefits from mangroves in the
Philippines. Using high-resolution flooding models, the
Report examines the flooding that would occur with and
without mangroves under different storm conditions
throughout the Philippines, and estimates the annual
expected benefits of mangroves for protecting people and
property in social and economic terms. |
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