In order to provide a reference for environmental governance and ecological protection in karst rocky desertification region,using Guizhou Province,rocky desertification of which is the most serious in China as the research object,depending on 2000,2005 and 2010 year's TM,ASTER and ALOS remote sensing image,the authors studied on rocky desertification change characteristics under the ecological program and rocky desertification controlling project since 2000 using integrated 3S technology.The results showed that Guizhou rocky desertification area reached 37 597 km2in 2005 from 35 920 km2 in 2000,and reduced to 36 473 km2 in 2010 (accounted for 20.7％ of total area in Guizhou).Rocky desertification annual change rate of Guizhou was 0.9％ in 2000-2005 and changed to-0.6％ in 2005-2010,actual monitoring value of rocky desertification area was 1 125 km2 lower than the predicted value,desertification controlling project had a certain effect,but the management efficiency had not been fully revealed yet due to the project just implemented.Under the ecological project especially the rocky desertification controlling project,increasing trend of rocky desertification of Guizhou had been reversed,rocky desertification area would decrease and grade would reduce gradually.
NETL
NSTL
维普
万方数据
