The Water Withdraws and Spectral Characteristic Analysis of Back Groundsurface Features In Zengcheng City
Many achievements in studies of extracting water have been made in the past ten years.According to the foundation of remote sensing and spectrum theory,the general extracting principal of remote sensing information is introduced.Zengcheng was rich in water resources ,and it is an idel back garden of Guangzhou city.Therefore,it is important to use the water resources rationally in Zengcheng.TM image dated 10 November 2006 was elected in this paper.Both interpreted maps were analyzed and managed by ENVI and ArcGIS software.Single-band threshold method,the relationship between spectrum,vegetation index and water index method were used in this paper.At last,Water index method was considered to be the most suitable one after a comparative analysis.In this paper landscape types within the study area were classified into (1) farmland ,(2)forest land,(3)urban Inhabitant land and other land ,(4)orchard land,(5)unused land ,(6)water ,with the help of Land cover map 2006 of Zengcheng.A reconnaissance survey of the study area was made to correlate the image characteristics and ground features by the standard technique of human-computer ‘dialogue interpretation.According to the foundation of remote sensing and spectrum theory,a model of water body extraction is set up in this paper.
Water Body Identification TM Zengcheng NDWI
Ai Gao Lihua Xia
College of Geographical Sciences,Guangzhou University,Guangzhou,Guangdong,CHINA 510006
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）