Integrated Rehabilitation Techniques of Rocky Desertification in a Watershed of Karst Areas——With Special Reference to Shiqiao Catchment of Bijie City,Guizhou Province
GAO Jian-fei, XIONG Kang-ning, SU Xiao-liang, et al. Integrated Rehabilitation Techniques of Rocky Desertification in a Watershed of Karst Areas——With Special Reference to Shiqiao Catchment of Bijie City,Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 117-121.
GAO Jian-fei, XIONG Kang-ning, SU Xiao-liang, et al. Integrated Rehabilitation Techniques of Rocky Desertification in a Watershed of Karst Areas——With Special Reference to Shiqiao Catchment of Bijie City,Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 117-121.DOI:
The distribution of rocky desertification in different types of land use was identified on SPOT imagery(2.5 m resolution) with 3S technology.The results indicate that
rocky desertification(over mild degree of desertification) occurred in parts of cultivated lands
shrub lands
sparse woodlands and/or grasslands.According to the habitat characteristics and social economic development of the upstream
midstream
and downstream areas in Shiqiao catchment
engineering and biological measures of desertification control were suggested as followed:(1) Practicing intercropping and rotation of tree—grass
tree—crop
crop—grass in sloped farmland as breakthrough points of ecological construction under high population pressure;(2) Optimizing water resource network of water pumps
head tanks and channels as the kernel;(3) Developing a suburban hybrid industry of agriculture
forestry and animal husbandry as a ecological system to promote rural economic growth in future.Finally
water and soil loss
rocky desertification will be controlled with soil erosion reduction of 32%