Based On Emergy Analysis For Sustainable Utilization Of Cultivated Land Resources Evaluation Of Chongqing

Recent years, As an important part of the reseach, the land-use change-driven and sustainable evaluation have won more and more emphasis. As the cream of the land, which is basic resources of agricultural production and sustainable development of the national economy.Evaluating the sustainability of cultivated land is basis for the using and protection of cultivated land resources.As the biggest Western direct jurisdiction city, which has maximum agriculture man. The farming situation is more and more stern,first, the quantity of farmlands reduce sharply year by year,second, The quality continuously Degradate,third,the serious shortage of arable land resources.The contradictions between human beings and land resource are becoming increasingly evident, the area of sustainable development of the key issues. Become the key issures of regional sustainable development.The main contents of this article are as follows:The first part, the preface.This part mainly introduces the research purposes and meaning and the status quo at home or abroad.The second part explain the theoretical foundations.introduce the theory of sustainable development and emergy analysis from basic concept,index systerm,computational method and the step. in view of the foregoing,put forward the innovation theory.The third part, introduce the cultivated land use of Chongqing. illustrate the basic and present condition from environment,social economy and cultivated land use, laid an important foundation for the further application research.The fourth part:On the basis of energy analysis, indices and ratios of the urban eco-economic system, On the basis of summarized emergy indicators, Base on the present situation of 2008 and historical development of 1997-2008 and the change in next five years,analysis the Sustainable utilization of cultivated land resources. From static and dynamic Changes explore the Cultivated Land Sustainable Utilization, by correlation analysis and regression model, predicted the Cultivated Land Sustainable Utilization in 5 years. The fifth part the land utilization change and its drive-response analysis of Chongqing.by the principal component analysis define the driving factors which cause Sustainable Utilization of cultivated land resources and analysis those factors.The sixth part, from policy,technology and thought concept giving a theoretical base for the sustainable development of Cultivated Land and summary and prospect.