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Land resources is an important basis for human survival and development. As the global population continues to increase, shortage of land resources and unreasonable, seriously hampered the development of socio-economic and productivity. How rational allocation of scarce land resources, to achieve the sustainable use of land resources, not only by the widespread concern in the international community and the general public, but also become a hot research academia. The national land use, regional land-use research in the country is relatively concentrated, and the shortage of land resources, land effective contribution to the larger urban land use is more urgently needed. Tianjin, as a modern port city and northern China an important economic center, with an area of ??only 11,900 km to land resources become important constraints of the socio-economic development. However, due to the land use structure is irrational, the coexistence of phenomena such as a shortage of land resources and waste. To achieve the rational use of land resources and structure optimization, should follow the objective law of development of things, combined with the economic and social development goals, and to investigate on the basis of land use spatial differentiation of rational division of the land-use functional areas for the development of science land-use planning to lay the foundation, in turn, coordinate the relationship between the various types of land use structure, to achieve the best use of, natural - economic - the grand goal of the harmonious development of society. Tianjin land use spatial differentiation rules for research, science division of the land-use functional areas, following the research and the corresponding conclusions: 1. Fractionation of natural impact of land-use space in Tianjin, social economic factors, a comprehensive analysis and study of existing land use status, on the basis of the evolution of trends and problems, statistical trends forecast method and gray prediction method forecast planning period of construction land and agricultural land development trends and land scale, two prediction results are compared to draw predictive value of the results. Is expected to land for construction in 2010 will be extended to 2847.48km ~ 2, agricultural land reduced to 5422.34km. Tianjin small proportion of primary industry and, second, the direction of industrial development and the characteristics of the proportion of tertiary industries increased year by year, breaking the traditional land analysis and evaluation, based on a comprehensive analysis of principles, the principle of the dominant factor, the geographical differentiation principle priority to take into account the effectiveness of land principle of environmental principles, the combination of quantitative and qualitative analysis, referring to the establishment of the national standard of the People's Republic of China, urban land classification procedures and related bibliography index system, the first attempt to establish the economic evaluation index system of land resources, select the the natural, social, economic nature, location, concentration, infrastructure, land use input and output levels, a number of factors of the level of economic development, comprehensive service capabilities and the supply of land potential, land resource evaluation focused on the construction land evaluation on.
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