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| 运用RS和GIS方法分析天津市平原区Hg含量空间分布 | |
| 引用本文： | 王 璐,蔺启忠,徐永明.运用RS和GIS方法分析天津市平原区Hg含量空间分布[J].西北农林科技大学学报(社会科学版),2006,34(2):109-114. |
| 作者姓名： | 王 璐 蔺启忠 徐永明 |
| 作者单位： | 1. 南京大学,地球科学系,江苏,南京,210093;中国科学院,遥感应用研究所,北京,100101 2. 中国科学院,遥感应用研究所,北京,100101 3. 南京信息工程大学,中美合作遥感中心,江苏,南京,210044 |
| 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。 |
| 关 键 词： | 监督分类 缓冲区分析 Hg含量分布 天津市 |
| 文章编号： | 1671-9387(2006)02-0109-06 |
| 收稿时间： | 2005-07-01 |
| 修稿时间： | 2005年7月1日 |
Spatial analysis of Hg distribution in Tianjin area by RS and GIS method |
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| WANG Lu,LIN Qi-zhong,XU Yong-ming,LIU Yong-hong.Spatial analysis of Hg distribution in Tianjin area by RS and GIS method[J].Journal of Northwest Sci-Tech Univ of Agr and,2006,34(2):109-114. | |
| Authors: | WANG Lu LIN Qi-zhong XU Yong-ming LIU Yong-hong |
| Institution: | 1.Department of Earth Sciences, Nanjing University, Nanjing,Jiangsu 210093, China ; 2.The Institute of Remote Sensing Application, Academic of Chinese Sciences, Beijing 100101,China;3.Sino-America Cooperative Remote Sensing Center, Nanjing University of Information Science and Technology, Nanjing,Jiangsu 210044 ,China |
| Abstract: | 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. |
| Keywords: | supervised classification buffer analysis Hg distribution Tianjin city |
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