Research on Land Use Change of Tianmen City based on RS

A technical streamline to analyze the land use /cover change by TM image interpreting in which the maximum likelihood method is used was introduced in this paper.A method to auto-statistics diversified data and overlay the land use data classified of the two different period to get the transfer matrix of land use in GIS software was applied.A technique to analyze the land use change trend and driving forces was applied.This paper can provide information for governments on land utilization and establishment of relevant policy for sustainable land-use.The results shows that the built-up land and forests area expanded with an increase of 5566hm2 and 773hm2 respectively,while the area of the cultivated land,water-body and unused land decreased during the period 1997~2008,with a decline of 2773hm2 for the cultivated land,1107hm2 for water-body and 2460hm2 for unused land.The decrease of cultivated land mostly occurs in construction projects and fishpond-digging.Whereas occupation of land for construction purposes involves the conversion of cultivated land and forests,accounting for 77.83% and 19.8% respectively,of the total.And most of the unused land has been developed into cultivated land and forests.In terms of single land use change dynamic degree land for residential areas,industry and mining is 0.159,which is the dominant influence in the study area.And the degree of integrative land use change in Tianmen city is 0.456(belong to region whose change intensity is lower) and the trend index of integrative land use change is 0.640(belong to region whose land use change is unbalanced).