A PRELIMINARY STUDY ON THE TECHNOLOGY OF VEGETATION RESTORATION ON THE LAND OF DIFFERENT ROCKY DESERTIFICATION DEGREE—— A Case Study of the Huajiang Demonstration Area,Guizhou

Karst rocky desertification land is a major type of desertification. Karst rocky desertification is a process of land degradation. During the process, the soil is eroded seriously or thoroughly, bedrock exposes widespread, bearing capability of land declines greatly with very low rate of land use and at last, landscape becomes similar to desert on the earth under violent human impact on the vulnerable karst eco-geo-environment. According to degradation degree of karst rocky desertification, karst rocky desertification land can be divided into the non-obvious rocky desertification land, the latent rocky desertification land, the light rocky desertification land, the medium-degree rocky desertification land, and the intensive rocky desertification land. The features of lack of soil, water shortage, low vegetation cover, low level productive forces etc. in the study area are analyzed, and the technology and measure for vegetation restoration, afforestation and grass planting on the land of different karst rocky desertification degree are put forward.