中国西北生态脆弱区天然气管线建设的生态环境影响

基于在中国西北生态脆弱区天然气管线建设的工程实例,利用夏季陆地卫星(TM)图像为基本信息源,应用遥感解译分析、野外样方调查等方法,以植被类型、土地利用、土壤侵蚀为基本评价因子,对天然气管线建设前、后项目区的生态环境变化进行了分析研究。研究结果表明,在中国西北生态脆弱区建设天然气输送管道,必须采取积极、适宜的生态环境保护措施,并及时进行生态恢复,可使工程对环境影响降至最小,进而达到生态恢复。

Study on Eco-environment Impact about Nature Gas Pipeline Laying in Chinese Northwest Region

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.