湿地区域生态风险评价模型
(1) 暴露和危害分析――生态指数模型：
式中，
为i类生境的生态指数；
为j指标的权重；
为i类生境的j指标。
(2) 区域生态风险综合评价――风险值模型：
式中，
为第k个风险小区的风险值；
为j类风险源对区域生态风险作用的权重值；
为第k个风险小区内j类风险源发生的概率；
分别为第k个风险小区的生态指数和脆弱度指数。
参考文献
付在毅，许学工，林辉平等：辽河三角洲湿地区域生态风险评价。生态学报，2001,21(3)
Mangrove wetland ecosystems generally include mangroves, tidal flats and base fish ponds. Generally by the algae, mangrove and semi-mangrove plants, associated plants, animals, microorganisms and other biological factors and sunlight, water, soil and other non-biological factors. Decomposition of the type and number are less, and the main anaerobic microorganisms, organism decomposition of incomplete body. Consumers are mainly sweet birds, especially waterfowl and fish, benthic invertebrates, insects, amphibians, reptiles are also more common, fewer species and the number of mammals.
湿地指天然或人工形成的沼泽地等带有静止或流动水体的成片浅水区，还包括在低潮时水深不超过6米的水域。湿地与森林、海洋并称全球三大生态系统，在世界各地分布广泛。湿地生态系统中生存着大量动植物，很多湿地被列为自然保护区。
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