Comparison on extraction methods of wetland in inland river basin of Northwest China:A case study in Zhangye City

       第十一届国际旱地发展会议——Wetlands ar irreplaceable natural complex. Unreasonable dvelopment and utilization of wetland in inland river basin of northwest China have remarkable impacts on people's life. It is urgent to find a good way to extract the wetland effectively in inland river basin.