Guizhou is a province of Karst development

it is affected by mankind action especially

and it isn' t unreasonable to using of land resource

flood disaster take place frequently. It lead to a series of environment problem. So people in karst region

if land desertification isserious

they are very poor. It enhances request of soil erosion work and building of ecological environment in karst region. The grade of land desertification is investigated and its space changeable

affecting parameters

causes and degree are analysed by GIS and remote sensing techniqu in Guizhou province

the map of land desertification in Guizhou karst region are made. Meantime

it is a completing way of science and technology

it is going to provide dependable data for soil erosion preventing and ecological environment managing.