摘要
综合利用遥感(RS)的监督分类方法和地理信息系统(GIS)的缓冲分析技术手段,对天津地区Hg 元素的空间分布规律进行分析,研究了河流、城区距离及农业土地利用类型等因素对研究区土壤Hg污染程度的影响。结果表明,河流、城区距离与农业用地类型是影响天津城郊地区土壤Hg污染的主要因素。这表明RS和GIS结合是快速进行农业环境地球化学等研究的有效手段。
The major factors of Hg spatial distribution were analysed by supervised classification of Remote Sense （RS） and buffer analysis of Geography Information System （GIS） technology. In this study,three factors are considered., distance to rivers, distance to urban area and agricultural land. The result shows that the prediction is right- the distance to river,the distance to urban erea and the style of agricultural land are primary affecting factors of Hg pollution in the soil of Tianjin area. This shows that connecting RS and GIS is an efficient means for quick study of geochemistry in agriculture environment.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2006年第2期109-114,共6页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家科学基金项目"农业环境土壤地球化学的遥感机理研究"(40371085)
关键词
监督分类
缓冲区分析
Hg含量分布
天津市
supervised classification
buffer analysis
Hg distribution
Tianjin city
