The Research Of Quality Evaluation On Eco-Environmental Of Irrigation Areas

China is a large agricultural country, also is a big irrigation country. Irrigation Areas plays an important role in the national economic development and eco-environment protection. However, in the wake of the rapid national economic development and human activity intensity, In irrigation development and construction process, a series of ecological problems have appeared, like, excessive extraction of underground water, irrigation water pollution, soil salinization and so on, which directly affected the normal irrigation efficiency . Therefore, attention must be given to irrigation eco-environment, understanding of irrigation eco-environmental quality, in order to take appropriate treatment measures, ultimately achieve economic harmony with the environment and healthy development. For this paper, on the basis of refer to the large number of domestic and foreign research results, study to evaluation of irrigation areas ecological environmental quality, the research results are as follows:(1) On the basis of a systematic analysis of the eco-environmental quality evaluation concept, the evaluation criteria and methods and the evaluation indices system, with the irrigation areas's own characteristics of eco-environment. Given about the concept of irrigation areas eco-environmental quality and evaluation of irrigation areas eco- environmental quality.(2) Currently, there is no uniform indices system for irrigation areas eco-environmental quality evaluation indices system, on the basis of analysis the impact on the eco- environment form irrigation areas construction. Primarily, establishment the indices system for eco- environmental quality evaluation of irrigation area. The indices system include the climate system resources, water resources, soil resources and biological resources, each subsystem can also include a system to reflect the characteristics.(3) According to the characteristics of irrigation areas eco-environmental quality evaluation, selection of three representative methods, FAHP evaluation, BP ANN evaluation and SVM evaluation. FAHP evaluation is organic integration the merits of AHP and fuzzy comprehensive, which enhanced the efficiency of the evaluation;BP artificial neural network is extracted regular characters of each sample from the training samples, then to recognizes test samples, which have some advantages of strong fault tolerance, self-learning and high accuracy. As a latest and most effective method of statistical learning, in recent years, SVM has become a new hotspot in the field of pattern recognition and machine learning, which has some advantages such as small-sample learning, high efficiency, and easy promotion and so on. However, each of these three methods has its own focus. Single evaluation method included insufficient information, so its assessment results are not completely consistent. The paper made a combination evaluation based on characteristics of above methods according to the weighted average method.(4) The paper chooses Baojixia irrigation area as an example, which has representative and realistic significance. Using the indices system for eco-environmental quality evaluation of irrigation area and the evaluation model for a typical case.The conclusion is match with the fact, the indices system and evaluation model is practicality and reliability.