The Beneficial Effects of Mangrove Forest to Sea Defence Structures
The Beneficial Effects of Mangrove Forest to Sea Defence Structures
复制标题
红树林对海防建筑的有益作用
DOI：
10.1007/978-3-319-73016-5_21
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
H. Verhagen
中科院分区：
文献类型：
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作者：
H. Verhagen
在许多地方，特别是在三角洲地区，需要堤坝和其他防洪结构来保护腹地免受海浪（台风、飓风）和/或海啸造成的洪水。堤坝的成本相当高，堤坝前的红树林会降低堤坝的成本。一般来说，红树林允许堤坝更低更窄。本章详细阐述了红树林对堤坝的水动力影响以及对堤坝成本的财务影响。堤坝前红树林的主要优点是，森林降低了堤坝前面的波浪高度，因此应对这些波浪所需的干舷可以大大减少。由于红树林的存在，堤坝前的波浪较小，通常不再需要昂贵的护岸结构。本章介绍了计算方法来确定堤坝建设的直接效益。
At many locations, especially in deltaic areas, dikes and other flood defence structures are needed to protect the hinterland against flooding by surges (typhoons, hurricanes) and/or tsunamis. Dikes are quite costly, and mangroves in front of the dike will lower the costs of the dike. Mangroves in general allow dikes to be lower and narrower. In this chapter the hydrodynamic effects of mangroves on dikes are elaborated as well as the financial impact on the costs of dikes. The main advantage of a mangrove forest in front of a dike is that the forest decreases the wave height just in front of the dike, and therefore the freeboard needed to cope with these waves can be considerably less. Because the waves in front of the dike are small due to the mangrove forest, often no costly revetment structure is needed any more. In this chapter computational methods are presented to determine the direct benefit for dike construction.