The Land Sustainable Use Evaluation In Xiaoting District, Yichang City

Land resource is the elementary resource for human being's existance and development. Just as Marx said, "land is the headspring for all productions and all existences". The whole history of human being's civilization proved that there are close connections between the land use and the human being's civilization, no matter we date back on the comedown of the ancient civilization, or we prospect the crisis of the future human being's may encounter. The spring up and growing of civilization benefit from the fertility and milk of land, while the civilization comedown can be ascribe to land's leanness and desolation resulted from human being's activities."Sustainable development" is a new conception that suggested along with the comprehensive discuss of the world and environmental problems. The new conception embodies the golden rule of mans society. It is the rational choice in face of the background that the problems of the population, resource and environment are worse and worse. Land resources can be used sustainable carrying out the idea, and it is materially a request to satisfies the present economic development's demand of land resources."How to determine and measure the land sustainable use synthetically" is a desiderate settled key problem along with the sustainable land use was bring to a strategic high and gained public's agree. "If sustainable development is our goal, it is necessary to know whether we are go ahead to the goal." We may define the material standard and guide the land use to be sustainable development, no other than we have a reasonable determination and measurement of the sustainable land use. The sustainable land use assessment emerges as the times requires. It is a sublimation and integration of the land use evaluation studies before.The land sustainable use evaluation selects determined evaluating indicators according as principle, goal and gist of the sustainable land use and quantitatively analyses the status and degrees of the land use according to suitable index quantizing and integrating. For the sustainable land use systems, because of the influence of the interior land use pattern and the exterior community and economic factors, the end appears as a unification of given structure, frame and course. The course of the sustainable land use assessment is also the unification of collectivity quantizing of such structure, frame, course, and future development trend.The key and the core of the land sustainable use evaluation is to found a suit of science and practical indicator system. There are mostly two methods of founding indicator systems, such as, enumeration algorithm and synthesis. Among them, the index system which raises a method establishment mainly has "pressure-state-respond to", "target-diagnosis-result", "ecosystem-economy-society" etc. three kinds of index systems.The found of the index weighing, the found of the key value, such as, indicator threshold, critical value and standard value, and the collectivity differentiate method of sustainability are remain the key problems and the difficulties now.The land sustainable use evaluation in Xiaoting county puts the study on the given extent and has a comprehensive evaluation of its sustainable land use assessment with the method of comprehensive evaluation. Materially, from three aspects as rationality of resources, economic feasibility and social acceptability, comprehensive evaluation ratio system for continuous land use is set up. Firstly, using analytic hierarchy process to determine the target weight; secondly, conducting nondimensionalize indexes in the system; then using the method of weighting to grasp the level of the sustainable land use in Xiaoting County; At last, coordination model is used to get the coordination degree of the sustainable utilization of land in Xiaoting County, and obstruction model is adopted to analyze the degree of obstruction of each index, and the main factors effected the sustainable land use is found.