水城县石漠化现状与植被恢复技术初探

Discussion on the Present Situation of Rocky Desertification and the Technology forVegetation Restoration in Shuicheng County

水城县是西部地区石漠化极为严重的一个县。据2004年调查,全县潜在石漠化土地61763.1hm2,占全县总土地面积的19.1%;非石漠化土地147076.3hm2,占全县总土地面积的45.4%;石漠化土地114876hm2,占全县总土地面积的35.5%。在石漠化土地中,轻度石漠化27043hm2,中度石漠化68958.4hm2,强度石漠化11706.8hm2,极强度石漠化7167.8hm2。石漠化的产生,制约了山区农村经济的发展,治理石漠化势在必行。本文根据石漠化的成因、特点,结合水城县治理石漠化的经验,提出水城县人工恢复植被的首选树种,并同时提出了多项技术措施,采用人工造林与封山育林相结合,是石漠化植被恢复的有效途径。

Shuicheng County is located in the western area of China where the rocky desertification is extremely serious. According to the investigation in 2004, the area of rocky desertification and latent rocky desertification regions in this county were 114876hm^2 and 61763. 1 hm^2, counting for 35. 5% and 19. 1% of the total areas of the county, respectively. On the part of the rocky desertification land, the light, moderate, intensive, and extreme desertification area were 27043hm^2, 68958. 4hm^2, 11706. 8hm^2, and 7167. 8hm^2 , respectively. Rocky desertification has seriously restricted the economic development of the mountain areas and become the main root of the farmers＇ poverty, thus the management of the rock desertification is both inevitable and imperative. Base on the analysis of the causes and characteristics of rocky desertification, as well as the experiences from the past practices in rocky desertification management, an effective countermeasure which combines the technologies of artificial afforestation and hillsides closing was proposed.