Experiment and significance of rocky desertification harness in geological methods in Jumu Underground River, Guizhou

The rocky desertification harness in Jumu Underground River is an experiment in light of geoscience. The goal of the experiment is to improve the karst geologic environment in rocky desert. By means of underground river exploration and mineral element fertilizer applying compensation during the growth season of crops, security of drinking water for people and livestock as well as irrigation is resolved; output and quality of crops is increased; local economy developed significantly and the unreasonable human engineering is controlled effectively. Remote sensing monitoring results show that the area of rocky desert has decreased obviously and that the extent of desertification has reduced remarkably after the experiment, which proves that to improve geologic eco environment is one of the efficient paths to harness rocky desertification and worthwhile to promote and popularize. However, the karst system in southwest China is very complicated and varied with comparatively great difference among different karst systems, therefore more effective harness should base on synthetic harnessing program according to practical geologic conditions.