Study On Sustainable Use Evaluation Of Regional Land Resources

As one kind of fresh development viewpoint and model,sustainable development was gradually accepted by every state nation in world since our common future was published in 1987.Government of every state nation in world promises implementing sustainable development strategy and establishing a set of sustainable development index system to reflect development sustainability, and makes it as common historical mission to establish and use sustainable development index system, especially makes a study of sustainable development from definition to evaluation and establishing index system since 1990. Sustainable land use is concretely applying sustainable development idea to land use territory. Sustainable land use idea was brought forward and affirmed on first international land sustainable use system workshop convoked on New Delhi city in February 1990. Sustainable land use is foothold and substance foundation of region development, go without saying, it is core content of sustainable development research.Every state nation in world start to research sustainable land use and evaluation since 1990, they have biggish dispute and divarication on connotation and target of sustainable land use, so people were difficult to choose foundation and criterion when they judge condition and sustainability of land use, and made it have uncertainty to evaluate sustainable land use. Whereas the above-mentioned situation, the research of sustainable land use evaluation index system and means regarding land use sustainability as target is always heatpoint territory of studying sustainable land use, and was greatly concerned by specialists and scholars of home and abroad. The dissertation plans to initially discuss theory and means of sustainable land use and evaluation on the yardstick of region.Based on existing literature and predecessors research, the dissertation stressly discusses sustainable land use and evaluation from visual angle of sustainablility, concretely includes filtering index of sustainable land use evaluation, constructing index system of sustainable land use evaluation, synthetically evaluating degree and level of regional sustainable land use with mul-index synthetical evaluation means, and especially affords useful fruit for researching process and means of land use evaluation in province region.With sustainable development theory, system theory, bionomics theory as guidance, the dissertation scientificlly defines basic conception, such as sustainable land use and land use sustainability, conjunction and difference belong with land use sustainability, rationality and suitability, connotation of reasonably using land, land use generational justice and intergenerational justice etc. roundly elaborates evolution process from sustainable development to sustainable land use, points out sustainable land use is historical production of mankind society development, reveals necessary and probability of sustainable land use. With population increasing and economy developing, multiple demand for land is appearing constantly growing current, so limited land resources is becoming more rare, the road of sustainable land use is the only way of walking out nowadays predicament of land use.Sustainable land use system is exoteric complex system that has specific structure and function, composed of different attribute subsystem interlacing, effecting and penetrating each other. so it has society, complexity, exoterices, arrangement and heterogeneity. Sustainable land use system consist of land nature subsystem, land economy subsystem and land nature subsystem and land ecosystem, population subsystem playing on dominant affect, maintaining fertility and price increment of sustainable land use system is main target for its benign moving, sustainable land use system evaluation is important means for its actualizing.Evaluation of sustainable land use is evaluation aiming at land use sustainability, is foreseeable evaluation aiming at land use present situation, it includes two types of qualitative and quantitative evaluation, researchful stress of home and abroad is quantitative evaluation of sustainable land use at present. Evaluation of sustainable land use includes land quality evaluation, land produce potential evaluation, land resources-asset evaluation, land use input-output benefit evaluation and land use system evaluation. Evaluation of sustainable land use is development of traditional land evaluation territory, under guided by sustainable development, it enriches and develops research territory and contents of land evaluation subject, relates to connotation, target, judging criterion and evaluating means of land use, also is core segment of researching sustainable land use from theory to practice and from concept to means.Core content of traditional land use evaluation is land quality. land quality is land synthesize attribute, often expressed and evaluated with land nature characteristic index and land economy characteristic index, so constitutes different land use evaluation.Looking on land use sustainability as evaluation substance, sustainable land use evaluation is new type land use evaluation style, besides of multinomial index synthetical route adopted by traditional land evaluation, evaluation route consists of price route, area route and energy route of sustainable land use evaluation, but carrying out these evaluation route needs to created necessary condition, hopes setting up land resources count system and making it bringing into economy—resources environment count system.Based on thinking of using for referencing predecessors research, the dissertation appraises through comparison actual sustainable land use evaluation index system home and abroad, uses for reference its advantage, prevents its shortage, offers valuable foundation for building sustainable land use evaluation index system that fits our concrete the situation of a country. besides, evaluates sustainable land use evaluation means, compares with its advantage and shortage, condition and foundation that applying relevant means needed.Textual core content is building regional sustainable land use evaluation index system. According principle of building index system and inherent logic relation, points out filtrate principle and basic frame of evaluation index, target layer is land use sustainability, criterion layer consist of resource protection, zoology rationality, economy feasibility and society acception, index layer consist of 35 indexs. Based on the foundation, dissertation has initiated case studies of guangdong province to launch sustainable land use evaluation. Through dealing evaluation index with filtrating and standarded, making sure index proportion with the analytic hierarchy process, according compositive evaluation cost and evaluation level of index, appraises land use sustainability state and degree of guangdong province with mul-index synthetical evaluation means, analyzes its change trend. case study showing, land use of guangdong province is sustainable state as a whole in 1996—2006, but wave is prodigious of land use sustainability change rate from year to year, explains that land use level of guangdong province is at unstable state, especially wave of resource protection index is maximum, future assignment of land resource protection is properly arduous.These are some preliminary conclusions on regional sustainable land use evaluation. (1) Region sustainable land use is substance foundation and core content of region sustainable development, it is mysterious that leaving sustainable land use to discuss Region sustainable development; (2) Sustainable land use evaluation is important link of sustainable land use from academic research to practice application, is important method and measure to ascertain region sustainable land use idea. (3) The core content of sustainable land use evaluation is generational justice and intergenerational justice, sustainable land use mean that descendants can own land resource assets as up-to-date owning at least.Seeing that sustainable land use evaluation is the systemic project, successfully launching sustainable land use evaluation research relies on constructing system of society economy and environment resources, regarding sustainable land use evaluation as regular evaluation system and fiting it into research frame of regional society economy sustainable development and sustainable land use, in the mean time, launches to tackle key problem of science and technology for some difficulty problems that evaluation exist index value, proportion, disposal and relationship to ensure as quickly as possible researching and establishing index system of sustainable land use evaluation that is fiting for china condition and applying scientific evaluation means system, carrys out the target of sustainable land use evaluation in 21 century agenda of China.