The Suitability Evaluation Of Cultivated Land Reserve Resources And Space Layout Research Of Lianjiang

Land reserve resources is an important supplementary source of cultivated land. Total cultivated land has an important role in dynamic equilibrium.Based on GIS technology, this paper Lianjiang, Guangdong Province, for example, land reserve on its field investigation conducted to study the land reserve resources Lianjiang the type, quantity, quality and distribution, combined with the actual Lianjiang, the evaluation grading factor scores, using AHP to determine the natural, economic and ecological factors in weight. Then based on the evaluation polygon attribute data, combined with the evaluation system to determine the various factors for each assessment unit score, and then weighted by exponential model the total score for each assessment unit. Will calculate the total score for each unit as the evaluation unit integrated appropriate classification based on suitability, the suitability of each cell level.Have been based on the actual situation and data, using empirical methods to determine the grade index evaluation factors and, based on evaluation of the extent of land suitable for the importance of natural weight coefficient. Based on the evaluation of natural factors on the land suitability of the degree of quantitative and qualitative methods of combining the various factors on the quantitative classification, evaluation results show that:Lianjiang natural suitability of land reserve Total capital 3050.74hm2, constituted by the three levels, One first-class land reserve 1270.88hm2, second-class land reserve funds 1705.48hm2, third-class land reserve 74.38hm2, respectively, the total reserve of arable land 41.66%,55.90%, 2.44%; Lianjiang economic suitability of land reserve owned a total of 3050.74hm2, consists of three levels, including one first-class land reserve 1174.63hm2, second-class land reserve funds 1801.73hm2, third-class land reserve 74.38hm2, respectively, the total reserve of arable land 38.50%,59.06% 2.44%; Lianjiang ecological suitability of land reserve funds total 3050.74hm2, consists of three levels, including one first-class land reserve 1036.64hm2, second-class land reserve funds 1940.25hm2, third-class land reserve 73.84hm2, accounting for land 34.38% of total reserve of resources,64.37%,1.25%.Overall, their reserve Lianjiang land mainly classified as grassland, beach and sand. The main conclusions are:1,Constructed Lianjiang reserve land suitability assessment system resources. The land of natural, social, and economic factors into the evaluation system, to fully consider the various features of land, its suitability of multi-objective evaluation done in order to avoid market conditions just from the economic evaluation of land effectiveness, and ignore the land use ecological and social benefits.Land reserve resources in determining the basis of the production function, which was arable land reserve of ecological and social functions, to prevent the allocation of land resources as a low value of the land into construction land use situation, so as to avoid land use change as social values brought about loss of arable land evaluation results can reserve resources for the development, consolidation and reclamation reference.2,Evaluation results show that the first-and second-class Lianjiang reserve land resources development, better conditions, fewer restrictions. If the development of the land, to guarantee food production. Third-class land reserve resources development more difficult, after vigorously improved crop yield is expected to low; if modified properly may cause land degradation or other serious consequences.