Applied Study On Cultivated Land Quality Update In Gongan County

Arable land is the essence of the land. It is the irreplaceable means of agricultural production. And it is the material basis of the survival and development of mankind, which can ensure the most important natural resources of socio-economic development. The research of the updating method of farmland gradation has important practical significance. This article establishes an index system of the cultivated land quality in the region of a county and updates the gradation of cultivated land to have a discussion on its updating methods on the basis of the current socio-economic status and other background of Gongan County. The research also includes the land quality evaluation analysis of agricultural land classification and gradation in Gongan County. Lastly, this paper makes an empirical case study of Gongan County, Hubei Province. This paper is divided into six chapters.Chapter1Introduction This chapter mainly describes the background and significance of the research and the purpose and contents of the studies. Then, it makes some analytical research of this technical paper.Chapter2Review of the cultivated land grade—determination research achievements both at home and abroad. In this chapter, the author first does some research and analysis on the existing situation and achievements of the current method of the cultivated land both at home and abroad. And then, makes evaluation and analysis of the cultivated land grade—determination calculation methods and techniques, and thus founds a solid basis for the research of this paper.Chapter3Research on the relevant update method of the cultivated land grade—determination. This chapter describes several update methods of cultivated land grade—determination, including the integration of maps, index selection, as well as sample and Kriging spatial interpolation methods for analysis and research on the cultivated land spatial differentiation.Chapter4Empirical study on updating the cultivated land grade—determination existing achievements in Gongan County. This chapter takes Gongan County as an example, to update the original results of the cultivated land grade—determination, conducts the research by using the methods including the original gradation map interface with the second national land survey map, building a new evaluation index system and updating survey samples in order to use interpolation method for the whole region.Chapter5Study on the evaluation and spatial distribution characteristics of cultivated land change in Gongan County. This chapter analyses and studies the evaluation of cultivated land use change and spatial distribution characteristics of Gongan County. With the support of GIS, it can make a spatial analysis on the change of cultivated land quantity, which can lead to understand the changes of cultivated land as far as possible. Finally, it makes an update result of the cultivated land grade—determination in Gongan County.Chapter6Conclusions and discussions. In this part, the whole research achievements are summarized and some low points are given. Furthermore, the suggestions for further study are made.