Remote sensing analyses of spatio-temporal changes of the ecological environment in the lower reaches of the Tarim River
会议名称：《The First International Conference on Computers and Computing Technologies in Agriculture》
会议日期：2007年
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 09[农学] 0804[工学-仪器科学与技术] 0903[农学-农业资源与环境] 0816[工学-测绘科学与技术] 081602[工学-摄影测量与遥感] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程]
基 金：National Natural Science Foundation of China No.50679070
关 键 词：database ecological environment remote sensing Tarim River
摘 要：正The ecological environment in the Tarim River Basin is extremely *** ecological problems resulting from local economic development in this region have been a hot topic for the ecological *** is a new trend to use information technologies to monitor the ecological environment dynamically by means of the modern information *** meet the constant requirements of long-term monitoring of a region ecological environment,this paper focuses on the vegetation coverage and land desertification on the basis of the information technologies of remote sensing（RS）,geographic positioning systems（GPS）, geographic information systems（GIS）,and data warehouse,applying the theory of the integrative spatial and attribute data,seamless integration of multi-source *** ecological environment for the lower reaches of the Tarim River is analysed qualitatively and *** investigated database is established and managed through multisource and multi-type massive data,which are collected from three periods of the remote sensing images and background data in 1999,2002 and 2004, *** methods of system classification, remote sensing interpretation,vegetation coverage, conversion models construction,and massive data built database are applied to analyse the data concerned during the dynamically monitoring the ecological environment in the Tarim River Basin. The results show that the vegetation coverage has increased gradually each year after the emergent water transportation project was started,whereas the desertification area has decreased,some sand areas have obviously *** speed of improvement in the east part of the fiver has been higher than in the *** ecological environment in the lower reaches of the Tarim River has tended to improve after the emergent water transportation project in the lower reaches of the Tarim River *** conclusion, the emergent water delivery plays a decisive and significant role in promoti