Abstract:

Some methods like combining remote sensing interpretation with field investigation, combining SPOT5 image data in France in 2007 with TM5 image data in America, and combining investigation of present situation with analysis of historical data, were used to further investigate the types, areas, distribution status and dynamic changes of the wetland resources in Daqing. The image of remote sensing satellite was disposed based on ecology, then the data of Daqing wetland in the years needed were obtained. From this, models of dynamic degree were established and the reasons and characteristics of evolution of Daqing wetland in recent 20 years were described briefly. Besides, human interference was found to be the main factor to threat the wetland. It could provide certain scientific basis for effective protection of the ecosystem and its environmental function in Daqing wetland, and also for sustainable management and reasonable use of the wetland resources.