Question

How do mangrove help reduce the impact of cyclone and tsunami.

Answer 1

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Answer 2

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•Wind and swell waves are rapidly reduced as they pass through mangroves, lessening wave damage during storms.

• Wide mangrove belts, ideally thousands of meters across, can be effective in reducing the flooding impacts of storm surges occurring during major storms (also

called cyclones, typhoons or hurricanes). This can significantly reduce flood extent in low lying areas. Narrower mangrove belts, hundreds of meters wide, will

still be able to reduce wind speed, the impact of waves on top of the surge and flooding impact to some degree.

• Wide areas of mangroves can reduce tsunami heights, helping to reduce loss of life and damage to property in areas behind mangroves.

• The dense roots of mangroves help to bind and build soils. The above-ground roots slow down water flows, encourage deposition of sediments and reduce erosion.

• Over time mangroves can actively build up soils, increasing the thickness of the mangrove soil, which may be critical as sea level rise accelerates

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