The research on the change of ecological environment with remote sensing is one of the important parts of the research on global change. Being crossed three provinces

the "Shan-Gan-Ning air mass to Yinchuan" natural gas pipeline project region is characterized by the obvious variety

complexity and transition of geographical environment. By using the TM images in 1997

2001 and the spatial analysis methods of remote sensing and investigated by quadrat

the dynamic change of vegetation

land use and soil erosion in the "Shan-Gan-Ning air mass to Yinchuan" natural gas pipeline project region during the period from 1997 to 2001 are analyzed. The results show that only by timely and aptly ecology restoration

the environment influence of pipeline project might be minimized.