The regional division of land use function is a newborn regional division in China’s third round revision of general land use planning, also is the core content of this round revision of municipal (prefectural) general land use planning, which embodies the requirements of major function oriented zoning to land use. Based on expounding the basic concept and connotation of regional division of land use function, this paper has comprehensively summarized the theoretical basis and technical methods of regional division of land use function. Taking Dehong Dai-Jingpo Autonomous Prefecture as an example, the paper has discussed the principles of regional division of land use function, regional division system, ideas of regional division, technical route, and specific methods and steps of regional division.Overall, the basis of regional division of land use function is the needs of land use function subareas according to the characteristics of regional land resource and the needs of future economic and social development in the study area, and primary purpose of this regional division lies in "controlling and guiding the main function of land use", and thereby the use of land will be more rational.The regional division of land use function is a complicated system engineering, its theoretical basis is mainly regional differentiation theory (i.e.regional differences theory). In addition, the theory of major function oriented zoning, land use function and land suitability evaluation, and overall regional coordinated development are also important theories of regional division.On technical methods, "top-down" regionalization method and "bottom-up" zoning method, which include special charts superposition method, qualitative analysis method (experience method), statistical classification method, process analysis method, system clustering analysis method, comprehensive evaluation method, discriminant analysis method, system evaluation hierarchical analysis, and principal component analysis method, are still the most commonly used methods for the regional division of land use function. Among them, the special charts superposition method and system clustering analysis method are especially widely used. Both have their advantages and disadvantages, and combining the two methods can make more scientific regional division of land use function. The basic principles for the regional division of land use function are mainly principles of spatial distribution, relatively consistent natural and social economic conditions, relatively consistent land use structure and guiding direction of land use (also called the principle of relatively consistent main land use function) and dynamic principle. Taking Dehong Dai-Jingpo Autonomous Prefecture as an example, and following the standards of highlighting the main function and coordinating the relevant planning, this study in the paper divided Dehong Prefecture into eight land use function regions according to the main function of land use based on the regional difference of land use function in Dehong Prefecture, namely region for agglomeration of the prime farmland, region for agricultural development, region for settlement development, region for incompatible industrial development, region for tourism, region for environmental risk control, region for heritagal protection, and region for forestry development. Moreover, this study has compiled the regional division map of land use function in Dehong Prefecture by using GIS technology on the basis of determining the basic idea, the technical route and the specific steps of functional region division, which was the core content for present round revision of general land use planning. The research results accord with the actual conditions of Dehong Prefecture, thus it is reasonable, and is of great significance to guide future land use and management in the whole Prefecture.
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