| 基于PSR模型的东阳江流域生态安全评价 |
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| 引用本文： | 解雪峰,吴涛,肖翠,蒋国俊,边华菁,马勇,陈建华.基于PSR模型的东阳江流域生态安全评价[J].资源科学,2014,36(8):1702-1711. |
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| 作者姓名： | 解雪峰 吴涛 肖翠 蒋国俊 边华菁 马勇 陈建华 |
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| 作者单位： | 浙江师范大学地理与环境科学学院, 金华321004;浙江师范大学地理与环境科学学院, 金华321004;浙江师范大学地理与环境科学学院, 金华321004;浙江师范大学地理与环境科学学院, 金华321004;浙江师范大学地理与环境科学学院, 金华321004;浙江省环境监测中心, 杭州310015;浙江师范大学化学与生命科学学院, 金华321004 |
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| 基金项目： | 浙江省科技厅公益性项目（编号：2013C33029）；浙江省教育厅资助项目（编号：Y201226102）；浙江省大学生科技创新活动计划项目（编号：2013R404053；2014R404058） |
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| 摘 要： | 以与乡镇结合的小流域为评价单元,将遥感影像数据、环境监测数据和社会经济数据相结合,利用"压力-状态-响应"模型、生态安全度模型和RS与GIS技术,结合流域生态系统的结构和功能,选取18项评价指标,建立流域生态安全评价指标体系,揭示流域生态安全的空间分布规律。研究结果表明:1东阳江流域生态安全状态优秀区域面积占8%,良好区域面积占81%,一般区域面积占11%,流域整体上处于良好状态;2流域上游部分评价单元设有自然保护区(东阳江),生态系统结构完整、功能完善,生态安全处于优秀状态;流域中游评价单元(马宅,画水等)河流流经丘陵低山地带,主要流域环境处于自然-半自然状态,整体生态安全状态良好;流域下游评价单元,河流干流流经东阳和义乌主城区地带,由于建设用地比例过大,人类干扰活动强烈,生态结构和功能遭受破坏,生态安全状态一般;3东阳江流域的主要环境问题为城区人为干扰剧烈,非环境压力较大;干流水质状况较差,部分流域单元生态组织和服务功能较差;湿地退化较快,消落带受损较重。
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| 关 键 词： | 生态安全 PSR模型 评价 东阳江流域 |
Ecological Security Assessment of the Dongyang River Watershed Using PSR Modeling |
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| XIE Xuefeng,WU Tao,XIAO Cui,JIANG Guojun,BIAN Huajing,MA Yong and CHEN Jianhua.Ecological Security Assessment of the Dongyang River Watershed Using PSR Modeling[J].Resources Science,2014,36(8):1702-1711. |
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| Authors: | XIE Xuefeng WU Tao XIAO Cui JIANG Guojun BIAN Huajing MA Yong and CHEN Jianhua |
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| Institution: | College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China;College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China;College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China;College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China;College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China;Environmental Monitoring Center of Zhejiang Province, Hangzhou 310015, China;College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China |
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| Abstract: | To explore spatial distribution patterns of ecological security in the Dongyang River watershed using the pressure-state-response and ecological security index models, 18 appraisal targets were selected and an index system constructed based on the evaluation unit superimposed by township and small watershed, remote sensing data, environmental monitoring data, social economy data, and RS and GIS technology. We found that the ecological security situation in this watershed is good and can be classified as excellent, good and general, accounting for 8%, 81% and 11% of the total area, respectively. River in ipstream of the watershed flowing in the nature reserve area (Dongyangjiang) has excellent ecological security and perfect ecosystem function. Midstream (E.g.Mazhai, Huashui), the main environment is undergoing interactions between nature and semi-natural states in which the ecological security situation is good. The river in watershed flowing through Dongyang City and Yiwu City (E.g. Choujiang, Wuning) has general ecological security, consistent with its extensive construction land ratio, intensive human activity and degraded ecosystem structure and function. The main environmental issues in the Dongyang River watershed are intensive human activities in urban areas, non-environmental pressure, poor water quality in the trunk stream, weak ecosystem structure and services in some evaluation units and serious deterioration of wetlands. |
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| Keywords: | ecological security PSR model assessment Dongyang RiverWatershed |
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