Key Technologies And Information System Of County-level Agricultural Land Classification

Agricultural land classification is the work that evaluating the quality of agricultural land synthetically and defining classifications based on its natural attributes and economic attributes. As the basic work of deeper reform of land management, agricultural land classification is an important duty endowed by law to the administrative departments of land and resources. It is not only a land resources survey and evaluation of public welfare, basic, strategic, and also the implementation base of land potential evaluation, land suitability evaluation land and land suitability evaluation. Studies on the agricultural land classification can fully grasp and scientifically evaluate the distribution of agricultural land and provide the basis for the balance of arable land, designation and protection of basic farmland, land development and arrangement etc. With the constantly deepening and improvement of our country in the field of study on the agricultural land quality, more and more evaluation methods and research methods were applied to agricultural land classification work, which enriched the connotation of agricultural land classification and improved the accuracy of classification results, but this also lead to a variety of problems in agricultural land classification such as diverse technical routes, uncommon study methods, various data formats, complex data calculation, difficult data management etc. At the same time, as the basic of agricultural land classification results summary and application, county-level agricultural land classification results’ authenticity and reliability are crucial for the entire agricultural land classification work.According to the current situation and existing problems of agricultural land classification, the study used professional GIS tools and computer tools, took actual work experience as the necessary supplement. By using agricultural land classification data in 2012, Shandong Province, Tai’an city, Taishan District, the paper researched on the following two aspects.First, a study on agricultural land classification key technologies. The paper delved using condition and restriction of evaluation methods, selection and application of classification factors and complication of complex algorithm in agricultural land classification, clarified the general idea and technology solution of agricultural land classification from the a ngle of theory and practice. At the same time, because many agricultural land classification results are digital form, some special case inconsistent with the actual were easy to dismiss due to a large amount of data, the study explained and achieved the methods of results test for reducing the data problems and non-technical problems in results.Second, design and realization of agricultural land classification evaluation system. Taking research findings of agricultural land classification key technologies as system design ideas, combined with GIS technology, database technology and computer technology, the study designed and realized agricultural land classification evaluation system facing data integration and results analysis.This paper integrated the evaluation methods of agricultural land classification. Study on key parameters and algorithm solved the specific problems in the practical work and meet the requirements of the business staff. At the same time, converting management of huge data and complex calculation to programming language and system function reduced the technical bar for evaluation research and realized the unity of the theory and practice of agricultural land classification.