The Afforestation Type Division and Vegetation Restoration Technique in Arid and Semi-arid Areas of Sichuan Province

In this paper,analysis was made of the cause of arid and semi-arid areas and vegetation restoration technology in China. On the basis of the research on arid and semiarid regions of Sichuan, Sichuan Province was divided into afforestation type areas, namely, Hengduan Mountains dry-heat valley area. Hengduan mountain dry-warm valley area, Hengduan Mountain dry-temperate valley area and Hengduan Mountains Derong-Xiangcheng semi-arid area. It was pointed out that the moisture and the soil were important factors in vegetation restoration technology. Besides, different vegetation recovery techniques were proposed for the 4 afforestation type areas.