干旱区生态环境知识资源中心

Wetland Ecosystem is one of important ecosystem in forest, ocean and wetland ecosystems. The wetland ecosystem is very important in global climate change and environmental protection. At present, remote sensing and GIS are widely applied to environmental research. In this paper, based on MODIS from 2002s to 2010s and combined with field data from 2001 to 2010, using GIS techniques and the human-machine interactive remote sensing interpretation method, which is adopted to analysis spatial statistics and avoid the lose and overlap of information, the dynamic monitoring of temporal and spatial variation of wetland ecosystem in Maqu County, Gansu Province, China was conduced. The result found that the wetland area decreased from 431.21 km(2) to 183.00 km(2) from 2002s to 2010s in Maqu County. The meteorological data from 1970s to 2010s was carried out and showed that warming and arid climate played important roles in the wetland degradation over Maqu County.