| 引用本文: | 夏少霞,刘观华,于秀波,刘宇.鄱阳湖越冬水鸟栖息地评价.湖泊科学,2015,27(4):719-726. DOI:10.18307/2015.0421 |
| XIA Shaoxia,LIU Guanhua,YU Xiubo,LIU Yu.Importance assessment of wintering habitats for migratory waterfowl in Lake Poyang. J. Lake Sci.2015,27(4):719-726. DOI:10.18307/2015.0421 |
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| 摘要: |
| 参照国际重要鸟区的评定标准,建立基于种群数量综合因子、物种多样性因子、保护物种综合因子的水鸟栖息地重要性评价因子集,采用模糊综合法评估鄱阳湖62个子湖泊作为越冬水鸟栖息地的重要性.结果表明:(1) 鄱阳湖的水鸟栖息地总体处于比较重要的水平,子湖泊之间栖息地的重要性呈现出明显的空间差异,自然保护区内高于保护区外;(2) 不同子湖泊间栖息地重要性的变化趋势不同,53.23%的子湖泊栖息地重要性上升,46.77%的子湖泊栖息地重要性下降,自然保护区内重要性下降的子湖泊比重低于自然保护区外.因此,当前保护区对栖息地的保护和管理是有效的,但省级以下保护区内的一些子湖泊的重要性存在下降的趋势,当前仍存在部分保护空缺.本研究为水鸟栖息地的保护与管理提供了科学支撑. |
| 关键词: 鄱阳湖 水鸟栖息地 模糊综合评价法 栖息地重要性 |
| DOI：10.18307/2015.0421 |
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| 基金项目:国家自然科学基金项目(41171030)资助. |
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| Importance assessment of wintering habitats for migratory waterfowl in Lake Poyang |
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XIA Shaoxia1,2, LIU Guanhua3, YU Xiubo1, LIU Yu1
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1.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P.R.China;2.University of Chinese Academy of Sciences, Beijing 100049, P.R.China;3.Jiangxi Poyang Lake National Nature Reserve, Nanchang 330038, P.R.China
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| Abstract: |
| Lake Poyang is the most important over-wintering and staging site for waterfowl along the East Asia-Australasia Flyway. In recognition of its global importance, Lake Poyang was designated a Ramsar site(Wetlands of International Importance) in 1992 for the lake is also home to 300000 to 700000 over-wintering migratory birds.In regards to the rating criteria of important bird area, a factor set is established based on the multi-stress of species, number, biodiversity, as well as protected birds. The fuzzy synthetic method is used to evaluate importance grade of the waterfowl habitat. Spatial pattern and annual variation of 62 sub-lakes are analyzed by using the waterfowl survey data from 2001 to 2013. Management effectiveness of protected areas is also evaluated. Results show that:(1) Waterfowl habitats in Lake Poyang as a whole is in the important grade, however, there is spatial heterogeneity of importance grade of the waterfowl habitatat sub-lake level. (2) Sub-lakes differ in inter-annual variability, with 53.23% of the sub-lakes showing an increasing trend, and the others decreasing, however, decrease rate of sub-lakes within natural reserves is lower than those outside.Meanwhile, it is also indicated there are conservation gaps. Sub-lakes such as Lake Zhu and Lake Qi, which are outside the protection areas, are of high importance grade and require better protection. Generally, this study suggests that the current habitat protection and management is effective, nevertheless, the importance grade of some sub-lakes within the provincial protection level shows a downward trend. Hydrological dynamics, high intensity aquaculture and the unclear ownership of sub-lakes within protection areas below provincial level may contribute to changes of importance grade of sub-lakes. This study provides scientific support to waterfowl habitat conservation and management. |
| Key words: Lake Poyang habitat of waterfowl fuzzy synthetic method importance grade |
