Study on Land Ecosystem Services at County Level of Experimental Area in Changsha-Zhuzhou-Xiangtan Megalopolis in China

The effect of land use change was explored on the ecosystem service value at county level of national comprehensive development experimental area by using such methods as combination of theoretical and empirical,dynamic degree of land use,integrated index of land use degree,and ecosystem services value.The results showed that land use change was mainly reflected on the decrease of cultivated land and waters area as well as the increase of woodland and construction land in Liling city from 1996 to 2005.Except construction land,the overall rate of change of land use was slow.Although the value of ecosystem services arising from land-use change caused by the value of the coefficient differences was to offset each other,the value of ecosystem services was dropped.It's not coordinate with resource-saving and environment-friendly society.So adjusting land use structure should be pay more attention.However,in the experimental area,ecological protection and resources conservation measures were taken,such as returning farmland to forest and intensive use of land and saving use of land.In the near future,this would be gradually improved,and in line with the requirements of resource-saving and environment-friendly social development.