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基于流域要素空间关系的水污染溯源研究 被引量:12

Water pollution traceability based on spatial relationship of basin elements
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摘要 为快速准确地实现水质监测断面水质超标时的河流水污染溯源,提出整合现有流域要素,构建水污染溯源的流域要素空间关系模型。该模型以划分为4个等级的河段和汇水单元为基础,建立汇水单元层级与上下游河段的编码关系;再将全流域要素与汇水单元建立空间关联关系,构建5个流域要素空间关系子系统模型;最后各子系统模型集聚组成一个相互协作的流域要素空间关系网络。以敖江流域实时水质监测断面为污染溯源触发点,将各个流域要素空间关系子系统模型直接应用于水污染溯源过程,结果表明,建立的关系模型在实际应用中能最大限度地提供污染源空间分布和结构信息,有效地识别和筛选研究区域的水污染引发源,快速缩小未知污染源搜查范围,提高了水污染溯源搜寻过程的效率和精度。 In order to quickly and accurately trace the source of water pollution when the water quality of monitoring section exceeded the standard,a spatial relationship model of basin elements for water pollution traceability was proposed by integrating existing river basin elements.The model was based on four levels of river reach and catchment unit,and established the coding relationship between catchment unit level and upstream and downstream river reach.Then it established the spatial correlation relationship between the whole basin elements and catchment unit,and constructed five subsystem models of the spatial relationship of basin elements.Finally,the subsystem models were aggregated to form a collaborative spatial relationship network of river basin elements.Taking the real-time water quality monitoring section of Aojiang River Basin as the trigger point of pollution traceability,the subsystem model of spatial relationship of elements in each basin was directly applied to the process of water pollution traceability.The results show that the established relationship model can provide the spatial distribution and structure information of pollution sources to the greatest extent in practical application,effectively identify and screen the water pollution sources in the study area,quickly reduce the search scope of unknown pollution sources,and improve the efficiency and accuracy of water pollution traceability search process.
作者 蓝志峰 肖桂荣 LAN Zhifeng;XIAO Guirong(Spatial Information Research Center of Fujian,Fuzhou University,Fuzhou 350116,China)
出处 《水资源保护》 CAS CSCD 北大核心 2019年第1期56-62,共7页 Water Resources Protection
基金 福建省科技重大专项专题(2017NZ0003-1-5)
关键词 污染溯源 空间关系 流域要素 敖江流域 water pollution traceability spatial relationship basin element Aojiang River Basin
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