An Analysis On Temporal Variations And Influencing Factors Of Land-use Structures During Urbanization

Land is an indispensable space carrier and material basis for humans’ survival anddevelopment. While lands use, as is a conscious, purposeful, social and economic activity forhumans, it is the product of interactions, mutual influences, evolutions and commondevelopment between human society and nature. Since all the activities of humans eventuallyaffect changes of land-use structure, different land-use structures will generate different social,economic and ecological benefits. To promote the rational use of land structures is aneffective way to realize the sustainable development of land resources.With land-use structure’s information entropy model, this thesis analyzes data about landclassifications of Xi’an from2002to2011, calculates dynamic changes in land-use structure’sinformation entropy of Xi’an during a decade, and makes analysis on spatial differences inland-use structure’s information entropy of each county in Xi’an. Finally, factors influencingdynamic changes in land-use structures in Xi’an are analyzed with relevant mathematicalstatistics methods.According to analysis, the overall tendency of information entropy of land-use structuresin Xi’an first went up and then stabilized in recent10years. Proportions of lands for forestry,cultivation, residence, industry, mining, and transportation are the main factors influencingchanges in information entropy of land-use structures in Xi’an. Moreover, there are threemajor types of land-use structures in Xi’an, namely, lands for residence, industry and mining,forestry, and cultivation, and their equilibrium degree is rather low. Meanwhile, regionaldifferences among information entropy of land-use structures of district (county) in Xi’an arevery significant. And these thirteen counties’ information entropy of land-use structures canbe divided into such three distributions as low entropy value area, median entropy value areaand high entropy value area. Based on the dynamic regulations reflected by informationentropy and equilibrium degree during the past decade, land-use structures in Xi’an present adynamic process of regulation, stability, re-regulation and re-stability, which are mainlyaffected by demography, economy, policy, technologies and urbanization, etc. Therefore, such four suggestions for the rational use of lands during urbanization in Xi’an are put forward ascontrolling population growth, guiding the healthy development of economy and promotingthe harmony between economy and land resources, improving lands’ intensive level, andupdating agricultural technologies and increasing farmers’ output gains.