流域水环境承载力聚类分区方法研究——以湟水流域小峡桥断面上游为例

发布时间：2018-01-27 01:52

本文关键词： 水环境承载力聚类分区 k-均值聚类双向调控　出处：《环境科学学报》2017年11期 　论文类型：期刊论文

【摘要】：流域内社会经济发展水平与水资源环境条件存在空间差异,导致水环境承载力具有空间差异特征.因此,有必要在流域水环境承载力分区基础上,实施差异化监管.以湟水河流域小峡桥监测断面上游为例,基于国家控制单元划分16个子单元,从水环境承载力大小、水环境承载状态、水系统脆弱程度及水环境承载力开发利用潜力4个角度,构建水环境承载力聚类分区指标体系,并对其进行量化.在此基础上,利用k-均值聚类法对控制子单元进行合并分区.通过轮廓系数验证,将研究区划分为4类最合理,即重点保护水环境敏感区、限制开发水资源约束区、控制开发水环境超载区和优化开发高开发潜力区.针对不同分区特点,提出具有针对性的水环境承载力双向调控措施,为流域水系统精细化管理及可持续发展提供科学依据.
[Abstract]:There are spatial differences between the level of social and economic development and the environmental conditions of water resources in the basin, which leads to the spatial difference of the carrying capacity of water environment. Therefore, it is necessary to base on the zoning of water environmental carrying capacity of the basin. Taking the upstream of the monitoring section of Xiaoxia Bridge in Huangshui River Basin as an example, 16 sub-units are divided into 16 subunits based on the national control unit, and the bearing capacity of water environment and the state of water environment bearing capacity are analyzed. From the four angles of water system vulnerability and potential of exploitation and utilization of water environment carrying capacity, the cluster zoning index system of water environment carrying capacity is constructed and quantified. By using k-means clustering method, the control subunits are divided into four categories, namely, the sensitive area of water environment protection and the restricted area of water resources development. To control the development of water environment overload area and optimize the development of high development potential area, according to the characteristics of different zones, the bidirectional control measures of water environment carrying capacity are put forward. It provides scientific basis for fine management and sustainable development of watershed water system.
【作者单位】：北京师范大学环境学院;环境保护部环境规划院;
【基金】：国家重点研发计划(No.2016YFC050350403)~~
【分类号】：TV213.4;X22
【正文快照】： 1引言(Introduction)水环境是社会与经济系统健康稳定发展的重要基础,其承载能力及承载状态对区域发展质量及潜力有着显著影响(崔凤军,1998;李新等,2011).不同区域人类活动规模与强度、水环境容量、水资源可开发利用量、水污染防治及水资源利用水平与潜力也存在巨大差异,导致

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