Study On Chongqing City Farmland Ecosystem Health Evaluation

Taking Chongqing farmland ecosystem last decade as the research object, the author consulted the massive literature, then, scientifically defined the connotation of farmland ecosystem health, using the analytic hierarchy process and entropy technology modification method to build Chongqing farmland ecosystem health evaluation index system. The system included four parts, the environmental conditions, stability, productivity and sustainability. According to the system, the author evaluated the Chongqing farmland ecosystem health from2001 to 2010. Finally, in accordance with the evaluation results, the author drawn up cropland management measures, targeted for the areas of farm management can be beneficial reference.This paper is divided into six chapters. Chapter one is literature review, introduces the theoretical foundation of the farmland ecosystem health assessment, chapter two is an introduction, describes the significance of the thesis, research contents and methods, chapter six is conclusion, the rest three chapters are the main part of this paper.Chapter three, on the basis of comprehensive analysis of farmland ecosystem characteristics, using the analytic hierarchy process and entropy technology modification method to build Chongqing farmland ecosystem health evaluation index system, and describes evaluation criteria.Chapter four, according to the system, the author evaluated the Chongqing farmland ecosystem health from2001 to 2010, the results showed that:Firstly,2001-2010, Chongqing farmland ecosystem in general in the general pathological transition phase to the sub-health state, and beginning in 2009, by the sub-health state to health status.Secondly, a greater change in the environment health status,2004,2005,2010 three years in a transition phase of the sub-health to health, in a disease state in 2006, the rest of the years in general pathological and sub-health intermediate state, showing large inter-annual fluctuations.Thirdly,2001-2010, stability and sustainability in sub-health to the health of the transition phase, there is considerable room for improvement. Finally, the productivity has not been good to play, remain at the sub-health state, did not change significantly in decade.There are some problems in Chongqing farmland ecosystem, changing agro-ecological environment, backward construction of farmland, weak resilience; farm productivity is not high, low agricultural output; low level of agricultural markets, agricultural commodity rate to be increasing.Chapter five, countermeasures and suggestions for the problems in Chongqing farmland ecosystem:carry out the construction of ecological environment, and strengthen environmental governance; local conditions, reasonable arrangements for farming; to strengthen the construction of farmland water conservancy projects to improve resilience; farmland soil fertility as the center, to strengthen water construction; to speed up the industrialization process of agriculture, to improve the market competitiveness of agricultural products...