基于ArcGIS的辽河流域水生态人类干扰性评价

以辽宁省内辽河流域作为研究对象,以小流域为评价单元.在相关数据调查基础上,构建辽河流域水生态干扰性的组成和评价指标体系,确定评价指标标准体系,采用灰色关联度法确定各指标的权重值.在此基础上运用ArcGIS技术生成辽河流域水生态系统干扰性评价分级图.结果表明:辽宁省辽河流域低、中、高干扰区域分别约占全流域面积的37.3%、58.4%、4.3%.低干扰区域主要分布在东部和西部丘陵和低起伏山地区,主要集中在抚顺、本溪、阜新和锦州等市(县);中干扰区域主要分布在东北部山区和西南部河流冲积平原地区,主要位于辽河干流沿线城市,包括铁岭、沈阳、本溪、辽阳、鞍山、营口、锦州、盘锦等市的部分地区;高干扰主要分布于中部平原地区,主要是沈阳、鞍山、辽阳等市的部分地区.人类干扰度贡献率排序依次为资源利用状况社会发展水平污染物排放压力经济发展水平.

Human Disturbance Assessment on Liaohe River Basin of Liaoning Province Base on ArcGIS

This paper set the Liao fiver in Liaoning province as the research object, well set small basins as assess units. In the related data based on investigation, Liao fiver aquatic ecological interfering composition and evaluation index system were constructed, as while as the evaluation standard system was defined, which value of the weight of each index was deter mined by the grey correlation method. Liao fiver basin aquatic ecological system interference resistance evaluation classification diagram was produced based on ArcGIS technology. The results show that Liao River in Liaoning province high, medium and low interference area respectively accounted for about 37.3% ,58.4% and 4.3% of the whole basin. Low interference area is mainly distributed in the eastern and western hills and low fluctuation area, which is located in Fushun, Benxi, Fuxin and Jinzhou. Medium interference area is mainly distributed in the northeast and the southwest mountainous river alluvial plain area, which is located mainly in the Liao he river main cities, including parts of Tieling, Shenyang, Benxi, Liaoyang, Anshan, Jinzhou, Yingkou. High interference area is mainly distributed in the central plains area, which is located in parts of Shenyang, Anshan and Liaoyang. The contribution of human interference in order for the resources utilization 〉 social development level 〉 pollutant discharge pressure 〉 the level of economic development.