On the problem of rocky desertification in Guizhou Province: (3 points) (1) Causes of rocky desertification (natural and man-made) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

On the problem of rocky desertification in Guizhou Province: (3 points) (1) Causes of rocky desertification (natural and man-made) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (1) Causes of rocky desertification:

Nature: Limestone is widely distributed, the process of soil formation is slow, and the root system of vegetation is shallow.

Man-made: deforestation, deforestation and unreasonable reclamation cause vegetation destruction, serious soil erosion and intensified rocky desertification.

(2) Landslides and mudslides?

(3), (1) Closing hillsides to facilitate afforestation, artificial afforestation, improvement in a certain place, changing slopes into terraces.

② Actively promote eco-agriculture, eco-industry and eco-city construction.

③ Efficient and rational utilization of water and soil resources, development of eco-economic forestry and grass industry and development of characteristic industries.

④ Ecological migration

Test analysis:

(1) Rocky desertification mainly occurs in the southwest of China. The main natural reasons are: limestone is widely distributed in this area, washed by heavy rain, serious soil erosion, exposed rocks, resulting in rocky desertification. Man-made reasons are mainly human deforestation, deforestation and unreasonable reclamation, resulting in vegetation destruction, serious soil erosion and intensified rocky desertification.

(2) Rocky desertification leads to the decrease of cohesion between soils, which easily leads to geological disasters such as landslides and mudslides.

(3) Rocky desertification has caused great disaster losses, and the following measures can be taken to control it: closing hillsides for afforestation, artificial afforestation, improving a certain place, changing slopes into terraced fields, actively promoting the construction of ecological agriculture, ecological industry and ecological city, making efficient and rational use of water and soil resources, developing eco-economic forest and grass industry, developing characteristic industries and ecological migration.