Security Evaluation Of Land Resource Dahua Yao Autonomous County In Guangxi

In recent years, with the rapid growth of population,industrialization and urbanization, the irrational use andtransformation of land resource by people has become increasingly severe,resulting in an increasingly intense contradiction among arable landresources, ecological security and social and economical development.Therefore, it is necessary for us to evaluate security of land resources.especially security evaluation of cultivated land resources andecological security evaluation of land; it is to provide a scientificbasis for rational layout of land planning use, insurable the developmentamong security of food, protection of ecological environment anddevelopment of economy, effective and scientific protection of arableland and ecological land and the sustainable use of land resources.On the basis of learning from relative literature outcomes of homeand abroad, this article generate and summarize concepts of the securityof land resources, systematic analyses theories of the land resourcesecurity; According to the cultivated land resources security related tofood and economic security and land ecological security related tocountry’s strategic security and social stability, the article explorethe land resource security evaluation method from two aspects includingsecurity evaluation of cultivated land resources and ecological securityevaluation of land. The article takes Dahua Yao autonomous county in Guangxias the studyobject. The county is a typical Karst mountainous region, A lot of rocks,a small number of soil, rocky mountain slope is very steep, land ecologicalextremely fragile, rocky desertification area is very large, seriousimpact on the local socio-economic sustainable development; so the papermainly discusses the safety of Dahua County of arable land resources andland ecologicalsecurity situation.1.while discussing security evaluation of cultivated land resources，township administrative is the evaluation unit, combined with the statusand characteristics of the county’s arable land, The evaluation systemis built mainly from four indexes including the amount of cultivated land,the quality of cultivated land, the efficiency of cultivated land and thepressure of cultivated land; The evaluation turn out that the securitysituation of arable land resources are operating at an unsafe conditionbased in2000and2010; in this change of decade, the arable landresources security value has increased overall, but still not optimisticabout the security situation of arable land resources; In the end, thearticle proposes countermeasures and suggestions to protect the arableland resources security.2. while discussing ecological security evaluation of land, grid isthe evaluation unit, On the basis of analysis of the natural and socialenvironment, The evaluation system is built mainly from two factorsincluding natural and socio-economic, and then discuss land ecologicalsecurity status and its temporal and spatial variation in2000,2010,informed that the2000land ecological security in an unsafestate-based,and in2010a safer state-based; in this decade, Dahua County landecological security situation has improved, but Dahua County, the typical karst mountains, its land ecological security situation is still worrying;Finally, to improve the land ecological security countermeasures andsuggestions.