Health Assessment of Characteristics of Wetland Evolution and Land Utilization in Sanmenxia Reservoir Area Based on Remote Sensing

Sanmenxia reservoir area wetland is located in the middle reaches of the Yellow River. It is a typical muddy river wetland. It is very important to analyze the change of wetland land utilization types in Sanmenxia reservoir area to understand the structure and change of the whole ecosystem in this area.Based on the eight Landsat remote sensing image data from 1979 to 2017, the land utilization information of wetland in Sanmenxia reservoir area was extracted. Chose single land dynamic model to reveal the Sanmenxia reservoir area wetland interannual evolution characteristics of various land utilization types, and analyzed its evolution characteristics in 2017. From the land utilization structure, the economic and social benefits and the ecological system function, it selected the 17 indexes and evaluated the health situation of Sanmenxia reservoir area wetland land utilization by fuzzy hierarchy analysis.