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作 者:郑丽波[1,2] 史利江[3] 俞立中[3] 贾丽[3] 王莹[3]
机构地区:[1]华东师范大学上海市城市化生态过程与生态恢复重点实验室,上海200062 [2]宁波市环境保护科学研究设计院,浙江宁波315012 [3]华东师范大学地理系,上海200062
出 处:《长江流域资源与环境》2009年第2期175-179,共5页Resources and Environment in the Yangtze Basin
基 金:中国博士后科学基金(20060400173);上海市科委项目(07DZ12037;06DZ12302);宁波市博士基金(2005A610031)
摘 要:以宁波市甬江流域为例,以GIS技术辅助流域水污染控制规划,在ARCGIS9.0的环境中,完成了流域水系概化、水质评价,并利用GIS的叠置技术,建立功能区划水域-入河排污口-陆上汇流区的对应关系。根据水环境功能区的水质目标,通过建立污染源-水环境质量的输入响应关系,然后利用GIS技术对甬江流域数字高程模型(DEM)进行数字地形分析,得到甬江流域的模拟河网和流域汇水图,构筑了水污染控制单元,作为水环境容量核定和总量分配的基本工作区域。最后利用GIS的可视化表达进行辅助决策,确定各水环境功能区的水环境容量,结合排污状况(包括工业、农业、生活)的分析,得出流域水污染控制的总量控制方案和对策措施。甬江流域水污染控制规划的实践表明,在规划过程中,GIS作为一个必不可少的工具渗透在每一个环节中,为数据管理、空间图形表达和空间决策分析提供有效的工作平台和可靠的技术支持。Using GIS for the planning of water pollution control in a river basin,the simulative river system was obtained from digital elevation models (DEM) of Yongjiang River Basin in Ningbo City of Zhejiang Province, using arc hydro tools in ARCGIS 9.0 platform. Therefore, the water control cell was set up as a basin work cell to calculate environmental capability and distribute total amount of drainage water pollutants. The basic GIS database were found to manage the information relative to geographical space such as pollution source, water system, water quality monitor station etc. Then, the correspondence of water environmental function region-sewer outlets-land conflux area, and the administrative cell corresponding to the control cell were built up using overlay based on GIS. Therefore, water quality evaluation and pollution source survey and evaluation were also finished as the platform in ARCGIS 9.0. The planning schemes of quantity control pollutant were generated based on analysis of pollution sources and environmental capability in each water control cell,and were visualized through GIS to aid decision-making. The research shows that the technology of geographic information system (GIS) is a cogent instrument to solve data management,and to figure database visualization and decision making assistant.
分 类 号:X522[环境科学与工程—环境工程] P208[天文地球—地图制图学与地理信息工程]
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