摘要
基于研究区2000、2005年的土地利用矢量数据,从土地利用数量、土地利用结构以及土地利用程度3方面分析了科尔沁沙地2000～2005年的土地利用变化特征,结果表明:(1)科尔沁沙地土地利用总体变化速度较慢,综合土地利用动态度仅为0.44%;科尔沁沙地土地利用变化的主要趋势是未利用地明显减少、建设用地与林地迅速增加。(2)研究区各旗县的各种土地利用类型的变化都和整个科尔沁沙地的变化相当,差异不大,土地利用结构信息熵总体呈下降态势。(3)土地利用变化程度两个模型的研究表明,科尔沁沙地土地利用程度不断增强,用地效率明显提高,土地利用正处于发展期,综合水平较高。
Based on vector data about the land use in 2000 and 2005 in Horqin sandy land,the characteristics of land use change in the districts were systematically analyzed in terms of land use quantity,structure and degree.Results showed：（1）The overall land use change was slow,the synthesis land use dynamic degree was 0.44%;the main trend of land use change was the area of unused land were decreasing;the transportation land and woodland were increasing in the Horqin sandy land;change of each kind of land utilization type in banner was as same as Horqin sandy land.（2）In general,the information entropy of regional land use structure was decreasing gradually.（3）By analyzing the two changing models of land use,we can conclude that the land use degree index was being strengthened consistently,and the land use efficiency was being improved obviously.The land use was generally in a developing period,and the comprehensive level is high.
出处
《云南地理环境研究》
2011年第1期28-30,共3页
Yunnan Geographic Environment Research
基金
教育部人文社会科学研究规划基金项目(07JA790043)
