Changes of land use quantities and structures in Xianyang City during the years from 1997 to 2005 are analyzed.The parameters are revised using the methods and modes of ecological value estimation in view of the actual conditions of the research area.Meanwhile

during the research period

ecosystem service value(ESV) of each year and ratio of ESV for various land use types are estimated.The results during the research period are concluded as follows.Firstly

the area of decreased cultivated land is the most and the area of increased woodland is the most

which are distributed mainly in Jingyang

Wugong

Sanyuan

and Liquan counties.Secondly

the ESV of Xianyang City increases 44 774.15 yuan and the annual increasing ratio is 0.72 percent.Changes of ESV in Xianyang City are concentrated in Weicheng District and Liquan

Yongshou

Binxian

and Changwu counties.Thirdly

the ESV proportion for cultivated land decreases least and the ESV proportion for woodland increases most.The most change of the ESV proportion for cultivated land and water area occurs concentrately in Weicheng District

the most change of the ESV proportion for garden occurs concentrated in Qindu District

and the remarkable change of the ESV proportion for woodland occurs in Binxian County.The ESV proportion of grassland and unutilized land in each district and county does not change obviously.