RS And GIS Are Applied To Monitor The Expanding And Changing Of Environment Of The City

In order to probe and study the remote sensing and the geographical technology of information system in applying prospect during urban environmental monitoring , This research project adopted the information of remote sensing of many kinds of source and relevant materials more , used the theory and method that the imaging information processing technology of remote sensing combined with the geographical technology of information system, carried on heavy the dynamic monitoring and appraises of large spans in expanding the city of monitoring area , and changing of Land utilize structure , vegetation cover , and waters area from 1945 to 1972 and from 1972 to 2002, And combined the statistics of later stage , carried on little the dynamic monitoring and appraises of spans on environment change of city noise, the hot island effect in 2002 , and water pollution, etc.The result of monitoring shows , from 1945 to 1972, and from 1972 to 2002, Urban area at enlargements constantly, expand speed accelerate later stage, The land utilizes the way and area to change relatively greatly , the area of water areas is being reduced constantly, the vegetation covers the total amount reduced , too. The rising after the trend drops of the city noise and water pollution in recent years, as to trend of the urban tropical island effect is worsenning constantly in. The environment overall quality of Fuzhou firstly declined constantly, improve progressively laterly , The environment overall quality of Fuzhou is good now.The result of study shows, Combining the remote sensing and thegeographical technology of information system monitored environmental change in expanding in urban construction land, the growth and decline of the greenery area, the pollution of water , noise, and degree of tropical island effect of environment ,etc. No matter its characteristic of the precision of drawing of the current situation from thd land of the picture of remote sensing of high resolution ratio utilizes, And its characteristics of the pace of it orient accuracy, the region scope , the little time and little expenses with GIS combined RS,etc. made remote sensing ( RS ) and geographical information system ( GIS ) technology have good application prospects.