Land Ecological Security Evaluation And System Construction Of Donghai County In Jiangsu Province

At present, more and more countries will establish a regional ecological security system to a strategic height of development, located in Donghai County, Jiangsu Province, northeastern part of Jiangsu Province. It’s typical of North Jiangsu County city, although in this China’s most economically developedprovinces of Jiangsu Province, Jiangsu unbalanced regional economic development is a very serious problem, the gap between the North and the South. Donghai County is located in northern Jiangsu area, local area faster economic growth, but the total is still small, low per capitaGNP. Larger proportion of arable land in terms of land use, a high proportion of rural residential land, residential land reclamation potential is higher, is facing many problems, such as land utilization is not high, the contradiction between the rapid urbanization and land.In Jiangsu coastal strategy of developing a national strategy, Donghai County is bound to lead to the rapid development of Donghai County land ecological security is facing unprecedented challenges and pressures. Donghai County Land Ecological Security Evaluation is basically blank, did not establish a complete land ecologicalsecurity protection system.The land ecological security evaluation system is "pressure-state-response (PSR) evaluation framework and natural-economic-social evaluation framework of these two methods. This paper attempts to merge the two systems, in order to avoid their inadequacies, to achieve a more accurate evaluation results. A pressure-state-response framework under two natural-economic-social framework, and select the23indicators, Donghai County land ecological security assessment. Donghai County land ecological security index value declined slightly between2006and2007, showing an upward trend between2007-2009, reached a peak in2009. After2009until2011, and there have been more substantial decline, but in2011the index is still slightly higher than the2007value. Donghai County land ecological security index value in0.7years from2006to2011, the overall situation is good, but there are some problems, such as land utilization is not high, reduce the per capita green area. On the results of the evaluation, Donghai County land ecological security and development contradictions determined to find three contradictions:the land ecological security and the development of urbanization contradiction land ecological land use and urban construction land conflicts, land resources and backward resourcesintensity and use efficiency contradiction. Inefficient use of land resources and resource conflicts.Donghai County land ecological security and development contradictions. This paper attempts to land ecological security system in Donghai County:awareness system, operating system, system system, supervision system built from four aspects.In this paper, Donghai County area, built land ecological security evaluation index system and land ecological security system is characterized by the for Donghai County land use and economic and social realities. Donghai County Subei county on behalf of the region, the study concluded study of Subei County provide a reference.