The Study on the Ecological Environment Changes and Sustainable Development of Sanjiang Wetland Plain

Sanjiang Plain wetland area lessened at large amplitude by exploited over fifty years,and the ecological environment has been worsening day by day,which is the serious threat to the ecological security and social economy sustainable development of Sanjiang Plain area.Therefore,the paper firstly reviews the historical development of Sanjiang Plain wetland.Then the paper analyzes the influence of agricultural development to the Sanjiang Plain wetland ecological environment.For these,the paper offers the four suggestions to the Sanjiang Plain wetland sustainable development.