Land Resources Ecological Security Evaluation Of Shanxi Province

Ecological security evaluation is a hot issue of the current research, in that land ecological environment is an important component of eco-systems, and land resources is one of the important study of ecological security. At present, due to population growth, economic development and the increasing intensity of land use, which has led to destroy the ecological environment of land resources and seriously threat to regional ecological security of land resources, ecological security research on land resources is an imminent problem that affects the overall situation. However, the current land ecological security evaluation and its theory are still in its initial stage, in that the evaluation methods and index system and how to determine the standard value are still the difficult issues, land ecological security forecast and warning are still in exploration stages, which need to explore and practice in different regions.Shanxi Province, a temperate continental climate, is located in the eastern margin of the Loess Plateau and a part of typical semi-arid areas interlocked agricultural and pastoral of fragile ecosystems in northern China. The economic and social problems, such as, low ratio of vegetation coverage, high rate of soil erosion, frequent droughts, fragile ecological environment, in addition of large index of population in land supporting, high intensity of mineral resources exploration, and heavy land pollution, inadequate investment on it, severely threat to regional ecological security of land resources, and directly affect the region's sustainable development.Therefore, this paper takes Shanxi Province as study area, according to the general index system of ecological security evaluation, referring to the relevant research results, combining their own characteristics of regional land resources, and attempts to create methods and indices of regional ecological security evaluation, and dynamically analyze the ecological security situation of land resources in time and space series. Thus, it can provide a research idea and information for the ecological security evaluation of land resources, and support the decision of sustainable socio-economic development with a reasonable, efficient allocation of land ecological resources, as well as offer a reference for policy-making of regional development.Main contents and conclusions are as following:First, chapter 1 deeply analyzes the characteristics of land resources in Shanxi Province, establishes a index system of the ecological security evaluation of a regional sustainable use of land resources for the major issues in regional ecological security. The system is composed of three subsystems, natural, economic and social systems of the land, further divided into four levels of 24 specific targets, including the goal layer, the system layer, state and variables layer.Secondly, chapter 2 selects the relevant data in 2000 and 2005 of Shanxi, and using ecological security evaluation model of land resources, respectively calculates comprehensive value of land ecological security in 2000 and 2005. And we found that in these five years, although ecological security situation of land resources improved in Shanxi Province, it has been and is still in the warning status (sensitive state). At last, it analyzed dynamic evaluation results.The third chapter uses ecological security evaluation model of land resources to calculate comprehensive value of ecological security of land resources in 11 districts of Shanxi in 2005. The results showed that: among the comprehensive value of 11 cities in the ecological security of land resources, Taiyuan, Yangquan and Lvliang are followed by 0.5725, 0.5819, 0.5949, whose ecological safety levels for the II, the mediate warning state; The comprehensive value of remaining eight cities in the ecological security levels from 0.6 to 0.7, the ecological safety for the class III, early warning status. The comprehensive values follow in the order from the most to the least throughout the city ecological security is: Jinzhong, Yuncheng, ChangZhi, Shuozhou, Jincheng, Linfen, Datong, Xinzhou, Lvliang, Yangquan, and Taiyuan. Fourthly, according to every city comprehensive value of ecological security of land resources, the thesis evaluates ecological security in districts of Shanxi.Finally, closely integrated with analysis of the results, the chapter puts forward a number of measures to improve ecological security as the goal for a regional sustainable use of land resources. As a result of the entire evaluation, the land resources problem Shanxi Province facing is not only an ecological security issue, but also an economic issue, more a social problem closely related to regional sustainable development. Therefore, my paper comes up with several pieces of advice to promote the eco-security sustainable development of land resources in Shanxi Province, with the coordination development of the ecological, economic, social benefits, as the goal. As far as the results of evaluation results concerned, it supplies decision-makers with high efficient allocation of land resources not only for sustainable socio-economic and ecological development, also with reference for the regional development policy-making.