Study On The Function And Value Evaluation Of Reservoir Ecological Service

(1) The research results of the ecosystem service value are summarized, and the assessment of the service function and the corresponding value of the river ecosystem is put forward. With reference to similar, the paper defines the ecological function of river system concept, and the river ecosystem service function level classification for fresh water supply function, material production, ecological support functions, ecological regulation function of cultural entertainment and five major categories, secondary classification to 17. Based on the classification of ecological service function, this paper introduces the concept of river ecosystem service function flow, and summarizes the advantages and disadvantages of ecological service value assessment method.(2) For the effective implementation of reservoir ecological value of scheduling, the discussion on the connotation of the ecological value of reservoir scheduling, to establish the ecological value of the reservoir dispatching model. In Xinfengjiang reservoir, the constraints on the flow of brief analysis, in constraint conditions determine typical year to regulate the flow, and calculate the code in the corresponding ecological service function flow. The use of river ecosystem service function value assessment method of the reservoir evaluation of ecosystem services value of the.(3) Taking Xinfengjiang reservoir as a case, the ecological service value of the Xinfengjiang reservoir were evaluated of study area after dam reservoir ecological service value results were comparative analysis. Ecological service value from large to small overall ranking for the ecological support function value> ecological adjustment function value> freshwater supply function value> culture entertainment value> function of material production value. Different social and economic water ratio has a great influence on ecological value, present recommended reasonable social economic water ratio showed a 30%. The reservoir ecosystem service value of statistics, ecological to function value, ecological regulation function value, freshwater supply function value, entertainment and cultural value, the proportion of material production function value in the reservoir ecosystem service value were 77% and 11.67%,6%,3%,2.33%. Obviously, the ecological support function and ecological regulation function occupies the dominant position in the reservoir service function. Thus suppose, can be the than the numerical example as the reference weight coefficient to determine reservoir leading ecosystem service function and the main ecological service value.(4) Summary of the paper, and points out the shortcomings of the paper to be improved. The evaluation of ecological service value of reservoir involves a wide range of contents, which requires a large amount of basic data and data, but it is difficult to collect data. In the calculation of the use of a certain data and proportion, making the research results and the actual benefits of a certain gap, but as an assessment method is still desirable.