关键词: 石漠化, 变化趋势, 遥感, 毕节地区

Abstract: [Objective] The aim of this study was to analyze the recent changes of rocky desertification of in the Bijie region. Our paper could provide a nice reference for combating rocky desertification. [Method] ENVI software was used to analyze remote sensing image data of Bijie in 2006, 2008 and 2010. The area and distribution of rocky desertification were compared between years. [Results] Rocky desertification were mainly distributed in Weining, Dafang and other counties. The area was 6 211.62 km² in 2010, which was 333.50 km² larger than that of 2006. Rocky desertification has been controlled with a annual reduction rate of 1.32%. [Conclusion] Due to climate, man-made and other factors, rocky desertification showed a expansion in some areas of Bijie. However, it has been controlled basically with rocky-desertification-control projects, and improved year by year.

Key words: rocky desertification, change trend, RS, Bijie