Analyzing the habitat suitability for migratory birds at the Chongming Dongtan Nature Reserve in Shanghai, China
Analyzing the habitat suitability for migratory birds at the Chongming Dongtan Nature Reserve in Shanghai, China
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DOI：
10.1016/j.ecss.2008.08.014
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发表时间：
2008-11
影响因子：
2.8
通讯作者：
B. Tian;Yunxuan Zhou;Li-Quan Zhang;Lin Yuan
中科院分区：
文献类型：
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作者：
B. Tian;Yunxuan Zhou;Li-Quan Zhang;Lin Yuan
东滩自然保护区是东亚最大的自然保护区之一，位于长江口入海口，是候鸟的重要栖息地。东滩湿地于1992年被列入中国保护湿地，2001年根据《拉姆萨尔湿地公约》被指定为国际重要湿地，2005年被指定为国家级自然保护区。河口和沿海生境因其性质和位置而具有动态性，其生物多样性的养护和管理依赖于最新的空间信息。通过建立鸟类种群数量与海拔、土地覆盖类型、潮沟密度和大型底栖植物生物量等关键生境因子之间的定性和定量关系，采用面向对象的图像分析方法，结合地理信息系统（GIS）和野外调查数据，对鸭科（Anatidae）、科（Charadriidae）、鹭科（Ardeidae）和鸥科（Laridae）等主要鸟类的生境适宜性进行了分析和评价。在保护区。结果表明，东滩保护区约40%的面积为这四个科的适宜栖息地。海三棱藨草带、滩涂带和潮沟是这些鸟类最重要的栖息地。该研究表明，这种方法的潜力，在一个动态的河口和沿海地区的物种栖息地适宜性的客观和有效的评价。作为生物多样性保护，湿地保护和生态系统管理的工具的结果的影响进行了讨论。
The Dongtan Nature Reserve, one of the largest nature reserves in East Asia, is located in the mouth of the Yangtze Estuary and is an important habitat for migratory birds. The Dongtan wetlands were listed in the Chinese Protected Wetlands in 1992, and were designated as internationally important under the Ramsar Wetlands Convention in 2001 and as a national nature reserve in 2005. By their very nature and location, the estuarine and coastal habitats are dynamic and their biodiversity conservation and management relies on up-to-date spatial information. By establishing qualitative and quantitative relationships between bird populations and key habitat factors such as elevation, land cover type, tidal creek density and macrophytobenthos biomass, we developed an object-oriented image approach, in conjunction with Geographical Information Systems and the data from current field surveys, to analyze and assess the habitat suitability for the main types of birds, namely Anatidae, Charadriidae, Ardeidae and Laridae, at the reserve. The results from this study showed that about 40% of the total area of the Dongtan Reserve contained suitable habitats for these four bird families. The Scirpus mariqueter zone, mudflat zone, and tidal creeks were the most important habitats for these birds. This study indicated the potential of this approach for objective and effective evaluation of the species habitat suitability in a dynamic estuarine and coastal area. The implications of the results as a tool for biodiversity conservation, wetland conservation, and ecosystem management are discussed.