Based On The Perspective Of Land Use Study On The Relationship Among Town Grade, Scale And Function In Heilongjiang Province

Land use urbanization is an important part of urbanization, size and type of the amount of urban land use scale direct impact on the town level and function, affecting the quality of urbanization, sustainable development and sustainable use of regional land resources. In the process of urbanization, the expansion of urban land size is a direct manifestation of urban development, urban level of increase is the initial results of urban construction, improvement and diversification of urban functions is an important goal of urban construction. The size of the town, grade, three closely related functions, but can be used as one measure of urbanization construction.The related research of urban scale, grade and function is the important research content in the field of land resource management and urban geography, and it is also the hot spot of domestic and foreign scholars. Since the development of the town by the multiple factors affecting natural resources, geographical environment, policy orientation, stage of development, etc., so the development of different areas of the town with its own characteristics. Heilongjiang province urbanization construction in the early days ahead of the national level, but after the reform and opening up of the level of urbanization is slightly lagging behind, with the country to revitalize the northeast old industrial base strategy to further promote, will further promote the development of regional urbanization. Meanwhile, Heilongjiang Province, as the northeast old industrial base, national commodity grain base and modern agricultural development base, focusing on rational use of land resources and the protection of arable land resources, security of strategic significance for national food security. Therefore, it is necessary to analyze the current situation of urbanization in Heilongjiang Province Based on the perspective of land use, and put forward countermeasures and suggestions to promote the development of regional urbanization. This study based on urban land survey data, comprehensive use of quantitative analysis, spatial analysis, statistical analysis and other research methods, interaction Heilongjiang province level and the size of the town, grade and functional relationships, scale and functional relationships, different functional combination mode urban spatial distribution characteristics of expanded analysis, the main content and conclusions are as follows:(1) The characteristics of the scale of towns and cities in Heilongjiang province and their relationship. Heilongjiang Province town level from high to low in order for the provincial capital, prefecture level, county level, town level of 4 towns, the number of cities and towns presented each grade sequence 1,12,64,399 in its amended as 1,8,68,399, relatively close to the center to the theory of hierarchy of administrative principle k = 7. The scale distribution of Heilongjiang province is in line with the order- size distribution and fractal dimension value D<1, which shows that the equilibrium degree of urban system is weak, the scale of large cities is large, and the scale of small cities and towns is relatively slow. With the town level of increase, the high level of the individual cities and towns have a general advantages of scale, the average size of the proportion of the town, county, prefecture-level, the capital town of 1: 6: 25: 162, but the total size of cities and towns within the contrast level accounting the proportion of the provincial land area of town, found the proportion of urban and township urban area of the county is 52.57%, higher than the provincial capital, the sum of the urban land area of the prefecture-level cities and towns.(2) The distribution characteristics of urban function and the relationship between the urban and town level. With the level of cities and towns, cities, counties(autonomous counties) and towns gradually decreased, the distribution of average number of classes gradually reduced to 32, 25, 22, 15, 23, the improvement of urban functions gradually reduced. Possess low-level urban functions, multi-grade town further improve on its basis, and the lack of high-grade urban functions, is also missing from low-grade town.(3) Through the research on the scale and function of the town, the number and the combination mode of the different size range of the urban functions of the different scale are different. The number of small cities and towns in the region is relatively large, and the distribution of the number of large cities is relatively stable, and the distribution of the number of large cities is high. By defining the "minimum threshold" of each functional category, it is found that the minimum size limit of the towns in the area of commercial land, industrial land, storage space, park and green space is 90, 70, 80, 140 ha.(3) The relationship between urban scale and urban functions. With the number of urban scale to enhance the distribution of land is gradually increasing the number of distribution range is also more concentrated, small-scale distribution of urban land class range is wide, Such as the number of urban land use in the 100 hectares is 2-25, while the number of cities and towns in the 1500 hectares is concentrated in the 20-32 range. Commercial land, industrial land, warehouse space, parks and green areas to achieve high frequency distribution of the smallest towns in defining both the "minimum threshold" were 140,70,80,190 hectares.(4) Towns functional combination mode of division and its spatial distribution. According to the distribution and combination of the two levels of land use types, the towns of Heilongjiang province can be divided into the basic function, the multi- functional town and the comprehensive function town. County(Autonomous County), county-level cities, prefecture-level city, the provincial capital of the central towns as a comprehensive urban, basic functions of urban township ethnic town, versatile and integrated functions of urban towns accounted for the proportion of the total number of towns were 55.09%, 34.74%, 10.17%. The number of distribution presents little town south than in the north, east west much less distribution trends, The spatial distribution of towns in Northeastern region’s main town of multifunction type, integrated high proportion of urban northwestern, southeastern town proportional basis than other areas.(5) Suggestions on optimizing the urban land use and promoting the construction of new urbanization. Based on the urban level analysis of the relationship between size and functionality combined with urban functions combination patterns and spatial distribution division, presented progressive development and improvement, small urban system, coordinating the distribution scale urban system, improve the urban functions, and promote coordinated development of urban system Suggest.