Wild Duck Lake Wetland Ecosystem Service Value Assessment Method Of Research

Wetland ecological service value evaluation because of its intuitive embodiment of monetary form, have achieved great development in China in recent years. Yeyahu wetland as typical wetlands in arid and semi-arid areas of the North, on the ecological service value for evaluation has a very important scientific and social significance.System analysis of wetland ecological service value research results at home and abroad, combined with a large number of actual field data, for yeyahu wetland nature reserve, a unique natural environment, comparative analysis of the NDVI vegetation index and SAVI of the study area, wetland vegetation information further extraction, establish a biomass retrieval model.On this basis establishes the wetland ecological service value evaluation index system, and based on the ecological service value evaluation model of remote sensing and geographic information systems, mainly from the atmospheric composition regulation, climate regulation, control of soil erosion, water purification, biodiversity 5 evaluation of yeyahu wetland nature reserve.The innovations of this article are (1) selection of a more suitable soil adjusted vegetation index of Beijing wetland vegetation information extraction SAVI;(2) conversion based on GDP growth by the old value of a unit of thought;(3) introducing species in value assessment of wetland biodiversity conservation value.