Evaluation On Ecosystem Services Of The Coastal Wetland In Liaoning Province

In recent years, the studies on ecosystem services are taken into account, which is the front topic of science study. This text regards the remote sensing and the geographic information system as the main technological means. Unifying the land utilization and the vegetation situation of the region, the coastal wetland area of Liaoning Province is divided into 11 kinds of landscapes type. They are sea wetlands, river or drainage or ditch, beach land, forest land, bush or grass, swampy ground, reservoir or pond, paddyfield, salt field and aquiculture area. It analyzes dynamic evolution of various landscape types from 1990 to 2005.Through the inquiry on the wetland of coastal area in Liaoning Province in 2005, based on the techniques of remote sensing, GIS(Geographical Information Systems) technology, with the Eco-economic and Resources-environmental theory, this article evaluates wetland ecosystem service function and its value with various methods, for example market value method, travel cost method and shadow project method etc. The conclusion can be drawn that the total assets value of the wetland resources is 1157.22×10~8 RMB in wetland of Liaoning, is 19.45% of total GDP of Liaoning province in 2005. Of which, about 516.33×10~8 RMB to water storing value, about 414.03×10~8 RMB to tourism value, about 364.88×10~8 RMB is ascribed to the value of main plants and animals, about 202.95×10~8 RMB to revetment, about 47.54×10~8 RMB to humanities social service function value, about6.90×10~8 RMB to water purification value, about 2.71×10~8 RMB to CO2 fixing, O2 releasing, about 1.88×10~8 RMB to habitat value. Their respective proportions are 33.16%, 26.59%, 23.27%, 13.03%, 3.05%, 0.44%, 0.17% and 0.12%.Finally, it analyzes ecosystem service function of the coastal wetland area in Liaoning Province and its value. According to population, social, economics, resources and its present environment situation of Liaoning Province, it maintains balance of the wetland ecosystem, and protects wetland function and the biological multiplicity, and improves water environment. It takes resources sustainable as the basic starting point, persisting the policy of comprehensive protection, prior ecology, prominent key, reasonable use, continues developing, providing the science reference for the coastal wetland area in Liaoning Province in land development plan.