Farmland Classification Method Of Map Data In The Provincial Summary

Land is the basis material of mankind's survival and development ,is one of the basic elements of statehood,The resources of the land is accurate preparation of national economic plan, the enactment of an important basis for policy。Farmland Grading work as one of the items "a new round of land resources survey," To a more rational planning, use and management of agricultural land. Through this work can be made on the quality of agricultural land scientific evaluation,So as to fully grasp the scientific and agricultural land to quantify the quality and value of the situation。The woke of the provincial agricultural land grading is following -up to the county level classification, play a crucial role as a bridge in the aggregate data at the national level.But now it isn't have a set of The sound system technical for the provincial routes and methods. It is necessary to conduct an in-depth exploration and study.In this great environment, this paper used integrated graphics means of agricultural land through the analysis of the characteristics of data classification, in-depth study the summary method of provincial-level map data ,such as points, linesand area land, a summary of various elements. Aggregate and summarized the technical line of the county-level map data to the provincial-level map data aggregated during the process of provincial-level summary.Based on the multi-attribute the concept of clustering, this paper take Qishan County, Shaanxi Province as an example of verification. At firtst , Introduce the the the natural, social profiles Qishan County, and then ,analysis the natural factors on the provincial level map data aggregated impact on the Qishan county's provincial-level map data for the process of summary and summary results of the verification; Finally, the text of the Inadequacy of an analysis, looked to the provincial map aggregate technology development prospects.