Evaluation on Ecosystem Service Value of Dongting Lake Wetland and Ecological Restoration Countermeasures

To evaluate the ecological service value of Dongting Lake wetland and put forward the ecological restoration countermeasures.The market value method,shadow engineering approach,carbon tax method and alternative expenses method were used to evaluate the ecological service value of Dongting Lake wetland,the system of ecological restoration countermeasures was put forward based on the evaluation results and principle of restoration ecology.Research results showed that Dongting Lake wetland was of the huge and multiple ecological services value,especiamly in product-producing value,adjusted and stored the flood value.In order to manage the Dongting Lake wetland well,it must be the guided by the theory and principle of restoration ecology,first task is restoring the ecological function,the target is developing the wetland industrial group which is accommodated to the wetland ecological environment and accelerating the fine cycle of economy and ecology,and the measures is the perfect unite of the outer ecological restoration and the inner ecological restoration.So as to increase the ecological services value and realize sustainable development of Dongting Lake wetland.The restoration of functions of adjusting and storing the flood and maintenance of biology diversity must be strengthened according to the priority principle.Water resources engineering and biological controling technique are used in the restoration of the former function,habitat renewal and habitat mitigation and natural protection area construction are the measures of restoration of the latter function.The product-producing function should be excavated adequately according to the sustainable use principle.The main methods are to design landscape ecology,construct the wetland industrial group which is accommodated to the wetland ecological environment etc.The other functions are restored by the environmental protection keeping to the principle of sustainable development and benefit.