1977-2012年乌审旗沙漠化演变景观格局分析

Landscape Pattern Analysis on Changes of Desertification of Uxin from 1977 to 2012

以鄂尔多斯市乌审旗为典型研究区,在分析该旗1977-2012年景观格局变化的基础上,刻画出其沙漠化的特征,为该地区可持续的土地利用提供参考。35年的乌审旗景观格局变化可分为两个阶段:1977-1987年,该阶段沙漠化扩展,但景观破碎化程度减轻;1987-2012年,沙漠化扩展的趋势得到了缓解,沙漠化开始逆转,但景观趋于破碎化。

In this study, the Uxin was chosen as study area, located in the southwest part of Or-dos, Inner Mongolia, China. The temporal and spatial characteristics of landscape pattern were depicted and analyzed from 1977 to 2012 , which can provide the reference for sustainable land utilization of the area. The results show that Landscape pattern changes of Uxin can be divided into two stages, 1977-1987 and 1987-2012. The landscape patterns tend to aggregation and desertification expansion, but degree of fragmentation of landscape patterns is alleviated in the first phase, while tend to fragmentation and vegetation recovery during the second stage.