Study On Appraisal Index Set And Evaluation Methods Of Comprehensive Profits In Agricultural Water-saving

In the dissertation, The appraisal index set and the evaluation methods of comprehensive profits in agricultural water-saving are studied, based on current agricultural water-saving in our country. The methods are advantageous to the science level to make agricultural water-saving engineering's decision, at the same time, it has the important practical value for overall analysis and evaluation to the possibility of agricultural water-saving engineering. The main contents are as follows:Firstly, the major problems in domestic water resource utilization are investigated and analyzed, the importance of agricultural water-saving and necessity of the research are discussed, and the key problems in agricultural water-saving research are summed up, based on the domestic and international study in agricultural water-saving.Secondly, the theories and methods of evaluation to comprehensive profits in agricultural water-saving are discussed, including the concept and meaning of agricultural water-saving, the definition of comprehensive profits, the calculation method of economic profits and shadow price.Thirdly, the principles and methods to build up the appraisal index set are put forward using the principle of system engineering, and the appraisal index set of comprehensive profits in agricultural water-saving are developed from society, economy and ecosystem, according to the analysis of quantitative and qualitative index.Fourthly, the multi-level evaluation mathematics model of comprehensive profits in agricultural water-saving are set up, based on the effect coefficient method, expert system and level analysis method.Fifthly, the demonstration irrigation project of water-saving in Rugao, Jiangsu Province, is studied by using the appraisal index set and multi-level evaluation mathematic model, the result showed that the appraisal index set and multi-level evaluation mathematic model is right and credible.