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文章摘要
地表水水质时空变化及其与土地利用响应研究
  
DOI:
中文关键词: 地表水  水质参数  土地利用  冗余分析  缓冲区
英文关键词: Surface water  Water quality indicator  Land use  Redundancy analysis  Buffer zone
基金项目:天津市自然科学基金资助项目(18JCYBJC90900);天津市教委科研计划基金资助项目(2018KJ164);北京市自然科学基金资助项目(4172025)
作者单位
乔悦 天津城建大学地质与测绘学院 
国巧真 天津城建大学地质与测绘学院 
吴欢欢 天津城建大学地质与测绘学院 
臧金龙 天津城建大学地质与测绘学院 
彭程 北京农业信息技术研究中心 
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中文摘要:
      基于全国水质监测站点数据和Landsat 8 OLI数据,分析各个站点pH值、高锰酸盐指数、溶解氧和氨氮 4项水质参数的时空变化特征,采用冗余分析方法研究不同尺度缓冲区内土地利用类型对水质参数变异的解释能力。结果表明,大部分监测站点水质参数变异程度较小,水质状况良好;不同尺度缓冲区内土地利用类型对水质参数的影响不同,在1 200 m缓冲区内土地利用对水质参数的解释率最大;农业用地在300 m缓冲区内会使水质恶化,可在较大尺度上对水质有净化作用,林地和水域在一定程度上可以起到改善水质的作用,建设用地对水质有较大的负面影响。
英文摘要:
      Based on the data form national water quality monitoring stations and Landsat 8 OLI, the temporal and spatial variation characteristics of four water quality indicators, i.e. pH value, permanganate index, dissolved oxygen and ammonia nitrogen, in each station were analyzed in this study. The ability of land use pattern in different scales of buffer zone to interpret the variation of the water quality indicators was studied by redundancy analysis method. The results showed that the variation of the water quality indicators in most monitoring stations was small and the water quality was good. The effect of land use pattern on water quality indicators was different in different scales of buffer zone. In 1 200 meters buffer zone, the interpretation rate of land use on water quality indicators was the largest. Agricultural land deteriorated water quality in 300 meters buffer zone, but had purification functions on a larger scale. Forest land and water area could improve water quality to a certain extent. Construction land had a great negative impact on water quality.
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