Research Of Arable Land Exploitation And Readjustment Potential Based On Agricultural Land Classification

Under the fundamental realities of the country that have a large population and less land and reduction of arable lands. Arable land exploitation and readjustment is an inevitable choice for the sake of achieving dynamic balance of the total area of arable land, safeguard regional food security and the social economic sustainable development. As a basis work of land development and consolidation planning, the accuracy of the research of arable land exploitation and readjustment potential bring on the scientific and reasonability of the plan of the new comprehensive land use planning. Therefore, it is necessary to explore it urgently. Study on arable land development and consolidation of the quantity and quality of potential, there must be a solid and reliable foundation for security. Grading from the current agricultural land is arable land have been made clear on the quantity and quality of situation, the agricultural land classification, applied to study the potential of arable land development and consolidation of a modern land development and consolidation of the trend of development planning.Based on the results of agricultural land classification with economic supply land theory, sustainable development theory, compatible land and human theory and system theory as a guide, this paper will explore agricultural land classification results into the new classification of cultivated land finishing the evaluation of potential New methods and new ways of arable land from development and consolidation of the quantity and quality potential of the two aspects of arable land consolidation potential for the calculations, the construction of calculating the number of potential arable land development and consolidation of the standard model and the coefficient of agricultural land classification standards among the outcome of the plot Model, and to measure the quality of cultivated land grain production to the mathematical model, the use of grain output for the grafting of bridges, farmland finishing together a comprehensive potential. On the basis of quantitative analysis, combined with dominant factor, cluster analysis of arable land development and consolidation area and arable land development and consolidation of the timing and Lulong County, Hebei Province for evidence. The main draw the following conclusions:(1)Based on the study area of cultivated land use characteristics and problems of the arable land development and consolidation on the basis of the theoretical potential of using standard land coefficient calculated the amount of existing arable land for finishing 1806.02 hm~2; arable land reserve resources in the development and utilization of the available for 1138.50 hm~2, through the development and consolidation of farmland degree of difficulty of, that land development and consolidation of the recent number of potential 1658.73 hm~2, the number of long-term potential to 2944.52 hm~2.(2)Grading of agricultural land to the natural, and so on, using as the basis, through the establishment of natural quality (of quality) index, Lee - grain output between the mathematical model, the grain production capacity, with grain output to organize on behalf of the arable land The quality of potential, to calculate the potential use of farmland for finishing 31828.56 t and theoretical potential for 126997.10 t. At the same time, land development and consolidation of the number of potential standards adopted after the grain into the calculation of arable land to development and consolidation of the recent comprehensive 38469.71 t potential for comprehensive and long-term potential of 139016.191, for the food security of Lulong County provides a scientific basis.(3)In the calculation of the potential arable land development and consolidation on the basis of this paper select land development and consolidation of the 14 factors, through the principal component analysis and cluster analysis system, using GIS and spatial analysis amendments, and appropriate adjustments in connection with reality, the county of Lulong For the four areas of arable land development and consolidation, based on the final 2005-2010 Lulong County Planning, land development and consolidation of the arable land development and consolidation determine the timing, so as to a new round of land-use planning in the development of science and laid a solid foundation.