| Soil erosion is a worldwide topic. Soil and water loss is also a very serious problem in our country. In order to solve this problem in our country many scholars study and put forward a variety of measures to deal with it. Watershed management is proposed in recent years, through years of experience accumulation and management after the remarkable achievement getting the national promotion. The effect of small watershed governance in controlling soil and water loss is visible. Because people had a higher standard to the requirement of environment in the pursuit of quality life. A clean environment and comfortable life, is a pursuit of people.Under the background of research on the small watershed, We pick out 50 household farmers by means of peasant household survey according to the existing data on small watershed. We summarizes the project river basin since 2009. In the study, according to their own characteristics and measures for the implementation of river basin suitable for project evaluation index system is constructed. Using mathematics and analytic hierarchy process, We analyze the effect of selected indicators for the benefit of the project river basin. Model calculation of peace for the benefit of small watershed system score, in the final analysis comparing various measures of the watershed clean governance efficiency impact assessment. The analysis results as follows:(1) Forestation should be taken to protect the ecological water and soil erosion for the main purpose of the interception and sand fixation. At the same time, the watershed clean governance also include some local economic development measures, such as fruit wood cultivation, seedling planting, livestock farming, etc.(2) I Chose 12 indicators and established a quiet clean small watershed comprehensive benefit evaluation index system, and the contribution rate of each index is as follows:the degree of governance (0.5951)> grass coverage (0.237)> soil erosion modulus (0.1153)> life sewage treatment (0.0526); Land productivity (0.5142)> income per capital labor (0.2648) productivity (0.1465)> grain yield (0.0746); Labor utilization (0.523)> education level (0.2546)> (0.1567)> farming area per forage-livestock system for agricultural products (0.0657). According to index contribution rate, I deleted three indicators. They are management degree, land productivity and labor utilization.(3) Comprehensive benefits by raising to 0.4 in 2009 to 1.49 in 2015, increase by the rate of 276.86%, and achieve III levels, consistent with the actual situation of small watershed, the ecological clean small watershed construction has reached the intermediate level, and the river system is in the intermediate state of virtuous cycle. The highest economic benefit reached the level IV,from the point of growth and contribution rate, somewhere in the middle. But no matter from the efficiency score, the social benefits of growth or contribution to see is the smallest. From scoring, economic benefits (1.69)> ecological (1.44)> social benefit (1.32); From the growth, ecological benefits (310.76%)> economic (269.11%)> social benefits (175.35%); Look from benefit contribution, ecological benefits (0.6048)> economic benefits (0.2674) (0.1278)> social benefits. Social benefit and the other two benefit are uncoordinated, and need to increase its strength of the corresponding control measures in governance in the future.(4) By the mean of the calculation of the index comparison, the watershed comprehensive control effect is obvious, but every benefit of the development are out of step. Local economic differences and farmers education level leads to restricting factors. |
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