Research On The Relationship Between Land Use Structure And Land Use Efficiency Changes In Zhuanglang County

This paper takes Zhuanglang County as the research object. On the basis of reaearch the characteristics of land use change,the dynamic evolution of land use structure and change trend of land use efficiency from 2001 to 2012 in Zhuanglang County, use the grey correlation analysis model to explore the relationship of land use changes, land use information entropy, land ues structure and efficiency changes from 2001 to 2012 in Zhuanglang County. So as to find a way to optimal layout of land use structure and improve land use efficiency level of Zhuanglang County.The results of the study show:(1)The changes of land use structure is obvious from 2001 to 2012 in Zhuanglang County.Woodland, urban and rural construction land, transportation land and other construction land area increase, the cultivated land, grassland, other agricultural land and unused land drop. The cultivated land area is dedined most, but the forest land is increased. Unused area reduced fastest, but forest land increased most quickly. Land use structure information entropy values show fluctuated trend, its value first increased, then decreased slowly and then increased year by year. The fluctuated change trend shows that the land use system in Zhuanglang County is not order enough. The forest land, cultivated land and unused land affect land use structure change of Zhuanglang County.(2)Land use economic, social, ecological and comprehensive efficiency show a rising trend from 2001 to 2012 in Zhuanglang County. The change trend of land us economic benefits and comprehensive benefits are basically the same, indicating that they have a good correlation. The improvement of comprehensive benefit of land use and economic development, society progress, ecological environment improvement are closely related.(3)Land use structure changes and benefit levels are well correlated in Zhuanglang County. The contribution rate of cultivated land and the benefits are highly related, the contribution rate of other land use types and benefits have a medium-relationship; land use change intensity of land use types and benefits have a medium-relationship, land use change intensity of cultivated land, woodland, unused land and benefits have closed relationship;the dynamic degree of land use types and benefits have a medium-relationship, the dynamic degree of unused land, cultivated land, garden land and economic benefit have a high relationship, the dynamic degree of woodland, unused land and social, ecological and comprehensive benefit have a high relationship, these land use types have significant influence on efficiency.Land use structure information entropy and the benefits has a good correlation, the changes of information entropy have an impact on the land use efficiency.Land use structure and land use benefit change have strong correlation in Zhuanglang County. Urban and rural construction land, garden land, transportation land are highly related to economic benefits, urban and rural construction land, transportation land, other construction land, garden land, woodland are highly related to social benefits, woodland, garden land, cultivated land and urban and rural construction land are closely related to the ecological benefits, urban and rural construction land, other construction land, garden land,transportation land are highly related to comprehensive benefits, these land use types have an impact on the improvement of land use efficiency.Reasonable allocation and effective use of land resources can promote the improvement of efficiency and achieve sustainable economic and social development.