洞庭湖区湿地生态系统健康综合评价
收稿日期: 2009-04-17
修回日期: 2009-08-20
网络出版日期: 2009-11-25
基金资助
国家自然科学基金(40701172),北京市科技计划项目(D08040600580801), 国家科技支撑项目(2008BAC34B01)和河海大学水文水资源与水利工程科学国家重点实验室开放基金。
Assessment and analysis of wetland ecosystem health in Dongting Lake
Received date: 2009-04-17
Revised date: 2009-08-20
Online published: 2009-11-25
Supported by
国家自然科学基金(40701172),北京市科技计划项目(D08040600580801), 国家科技支撑项目(2008BAC34B01)和河海大学水文水资源与水利工程科学国家重点实验室开放基金。
湿地与海洋、森林并称为地球三大生态系统,湿地退化速度远大于其他生态系统,从而使得湿地健康评价与分析成为湿地领域研究的重点内容之一。本文以生态系统健康及压力-状态-响应模型为研究方法,综合利用遥感、野外实测和社会统计等多源数据,建立一套湿地生态系统健康评价指标体系,集成利用遥感和地理信息技术建立湿地生态系统健康评价模型,实施湿地压力、状态、响应、健康分析,揭示了洞庭湖湿地生态系统健康状况的空间分布规律。研究结果表明:(1) 洞庭湖区31%的湿地面临人类干扰压力较大,19%的湿地状态较好,82%的湿地生态系统发生很大变化。(2) 湿地的总面积在人类活动的干预下逐渐缩小,湿地综合健康较差、一般和较好的区域分别占总面积的6%、75%和19%,缺乏健康状况最好及最差的区域。(3) 湘阴县、沅江县及岳阳县的湿地生态系统健康状况较好,益阳县较差,安乡县等12个县市一般。
蒋卫国, 潘英姿, 侯 鹏, 李 雪, 季 维, 郑建蕊 . 洞庭湖区湿地生态系统健康综合评价[J]. 地理研究, 2009 , 28(6) : 1665 -1672 . DOI: 10.11821/yj2009060022
Wetlands are one of the most important ecosystems on Earth and the major feature of the landscape in almost all parts of the world, which is very important to the sustainable development of anthropogenic society at a regional or global scale. Taking Dongting Lake as a study region, this paper firstly established evaluation indicators of wetland health concerning hydrology, ecology and environment according to the feature of wetlands and principle of PSR (Pressure-State-Response) model. Secondly, multi-temporal remote sensing data were acquired by TM (Thematic Mapper) sensor onboard of American Landsat satellite system, geographical data, land use/cover data, field detection data and social statistic data. Thirdly, special information of each evaluation indicator was extracted from different data sources and analyzed. Finally, a PSR model supported by GIS was used to evaluate and analyze wetland ecosystem health. The results show that the areas with better, generic and worse health conditions account for 19%, 75% and 6% of the total area respectively, and that there are no areas with best and worst health conditions. The wetland ecosystem health condition is better in Xiangyin County, Yuanjiang County and Yueyang County. The health condition of Yiyang County is worse. The other counties belong to the average grade of health.
Key words: Dongting Lake; wetland; ecosystem; health; assessment
[1] Millennium Ecosystem Assessment Board. Ecosystem Services and Human Well-being: Wetlands and Water Synthesis. Washington: World Resources Institute, 2005.
[2] 李文华,欧阳志云,赵景柱.生态系统服务功能研究.北京:气象出版社,2002:133~139.
[3] 蒋卫国,李京,李加洪,等.辽河三角洲湿地生态系统健康评价.生态学报,2005,25(3):408~414.
[4] 美国环境保护局近海监测处.河口环境监测指标.北京:海洋出版社,1997,112~143.
[5] 张晓萍,杨勤科,李锐.流域健康诊断指标—一种生态环境评价的新方法.水土保持通报,1998,18(4):57~62.
[6] 崔保山,杨志峰.湿地生态系统健康研究进展.生态学杂志,2001,20(3):31~36.
[7] Ji W, J Ma. Geospatial Decision Models for Rapidly Assessing the Vulnerability of Wetlands under Potential Human Impacts. In Wetland and Water Resource Modeling and Assessment: A Watershed Perspective, ed. by W Ji, CRC Press of Taylor & Francis Group. 2007.
[8] 蒋卫国.基于RS和GIS的湿地生态系统健康评价.南京:南京师范大学,2003.
[9] Kevin Jones, Yannick Lanthier, Paul van der Voet, et al. Monitoring and assessment of wetlands using Earth Observation: The GlobWetland project.Journal of Environmental Management, 2009,90: 2154~2169.
[10] Xu F L, Lam K C, Zhao Z Y, et al. Marine coastal ecosystem health assessment: A case study of the Tolo Harbour, Hong Kong, China. Ecological Modelling, 2004,173: 355~370.
[11] Fu-Liu Xu, Shu Tao, R W Dawson, et al. Lake ecosystem health assessment: Indicators and methods. Water Research, 2001, 35 (13), 3157~3167.
[12] Renato A M Silvano, Shana Udvardy, Marta Ceroni, et al. An ecological integrity assessment of a Brazilian Atlantic Forest watershed based on surveys of stream health and local farmers'perceptions: Implications for management. Ecological Economics, 2005, 53, 369~385.
[13] Meng Wei, Zhang Nan, Zhang Yuan, et al. Integrated assessment of river health based on water quality, aquatic life and physical habitat. Journal of Environmental Sciences, 2009, 21,1017~1027.
[14] FAO Proceedings. Land Quality Indicators and Their Use in Sustainable Agriculture and Rural Development. Proceedings of the Workshop organized by the Land and Water Development Division FAO Agriculture Department, 1997.2:5.
[15] Rainer W ALZ, Development of Environmental Indicator Systems: Experiences from Germany. Environmental Management, 2000, 25(6): 613~623.
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