东北三江平原湿地动态变化研究

借助遥感、GIS手段，以1989年TM、2001年ETM和2007年CBERS遥感影像为主要数据源，通过分析三江平原湿地的分布现状、时空变化规律,并用动态度和景观格局指数量化变化，研究其近20年的变化情况。结果显示:三江平原湿地现主要分布在同江、抚远、富锦、虎林等县市；湖泊和河流湿地呈稳定趋势，沼泽湿地大面积减少,在研究时段内共减少5 356.69 km²，人工湿地大幅度增加，共增加11 597.68 km²。天然湿地破碎化程度加剧，人工湿地呈连片化趋势，受人类活动的影响较大。

Study on Dynamic Change of Wetland in Sanjiang Plain,Northeast Area

The authors study on the wetland's change of Sanjiang Plain in the past 20 years,with the TM,ETM and CBERS data,analyzing and quantifying the present distribution and spatial-temporal dynamic variety by RS and GIS technology.The results show that the wetland is now mainly distri-buted in the counties of Tongjiang,Fuyuan,Fujin,Hulin and etc.,the varieties of lake and river are almost stable.During the study period,the mire area reduced 5 356.69 km2 greatly and the constructed wetland increased 11 597.68 km2....