Excessive reclamation on Dongtan wetland not only affects the survival of the benthic fauna, but also damages the habitats and food source of migrant birds.

东滩湿地需要考虑合理的围垦，过度围垦不但直接破坏了底栖动物的生存，而且威胁到迁徙鸟类的食物来源和栖息地。

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The problems faced by wetland are poldering reclamation, water pollution, eutrophication, water and soil loss, excessive utilization of biological resource due to history and human being.

由于历史和人为原因，湖北湿地存在的问题主要表现为围垦、富营养化、水土流失及其生物资源的过度利用。

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Land reclamation, city and port development, pollution and excessive use of coastal biologic resource are considered as the main environmental forcing factors to the degradation of coastal wetlands.

本文对滨海湿地退化的主要原因进行了分析，指出围垦、城市与港口开发、污染及生物资源过度利用是造成滨海湿地退化的主要因素。

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