怀九河小流域生态系统近自然定量评价  

The near-natural quantitative assessment system of small watershed ecosystems of Huaijiu River

作　　者：高阳[1,2] 高甲荣[1] 冯泽深[1] 包昱峰[1] 

机构地区：[1]北京林业大学水土保持学院,教育部水土保持与荒漠化防治重点实验室,北京100083 [2]华东师范大学河口海岸学博士生访学基地,上海200062

出　　处：《干旱区资源与环境》2009年第4期64-68,共5页Journal of Arid Land Resources and Environment

基　　金：华东师范大学河口海岸学博士生访学基金;国家自然科学基金(基金编号40771128)资助

摘　　要：从怀九河小流域生态系统的生态特征、地貌特征和水体特征三个方面入手,利用由22个定量指标组成的北京小流域生态系统近自然评价体系,对作为北京怀柔水库重要的入库河流-怀九河进行了实际评价。结果显示:怀九河17个小流域中仅有1个处于自然状态,6个处于近自然状态,8个处于退化自然状态,2个处于人工状态,总体受到了较大的人为干扰。并对评价结果进行聚类分析,结果呈现高度的一致性,为该体系的普及和推广提供必要的参考依据。From ecological, topographical and hydrological aspects, the nearnatural assessment system of small watershed ecosystem of Beijing which is composed by twenty - two quantitative indicators have been used to make an actual assessment about Huaijiuhe River, which is one of the important interflowing river of Huairou Reservoir. The results showed that only one watershed is in the natural condition among seventeen ones, six watersheds are in the near- natural condition, eight watersheds are in the degraded natural condition, accounting more than fifty percent, two watersheds are in the man -made condition for water interception, and the general situation has suffered the big interferences. The clustering verification of seventeen small watershed ecosystems of Huaijiuhe River has been made, the two kind of results showed the highly similar classification, which offer the scientific references to its population.

关 键 词：小流域生态系统 近自然评价 聚类分析 

分 类 号：X171[环境科学与工程—环境科学]