The Study Of Land Use Structure Optimzation In Dehua County Based On Ecosystem Service Value

With the rapid growth of the population and the development of the society and economy, the conflict between population and land is becoming more and more sharply, while the shortage of resources and environmental degradation problems also turn up, which restrict the sustainable and healthy development of China seriously. All of these problems are related to irrational land use structure, so the optimization of land use structure is necessary to realize the coordinate sustainable development of land use, economy and environment.Taking Dehua county as study area, this paper divided the county-wide land into certain ecosystem service unit combining with the current situation of land utilization, and evaluated the ecosystem service value(ESV) of each year during 1998-2007, analyzed the main factors that had influenced the ESV with different methods, made a forecast on the development of ecosystem service value in the future by the grey forecasting model. In order to maximize ecosystem services value which was the planning goal, linear planning model had been established based on the consideration of the development of society and economy in Dehua county. Then, the optimized land use structure was obtained. Finally, some measures and suggestions were put forward to promote the optimization of land use structure.