贵州西部石漠化与土地保护

Land Protection and Stony Desert in the West of Guizhou Province

地处长江水系与珠江水系分水岭地带的贵州省西部,石漠化较严重。大多数石漠发生在正向岩溶地貌和落水洞、漏斗、峡谷陡坡上;在不易形成石漠的岩溶洼地、溶盆中,由于不合理工业取土诱发石漠化。岩溶石山上树木遭受毁灭以及陡坡地带盲目垦殖,加速了石漠化。在贵州容易形成石漠的自然背景下,违背自然的人文活动加剧石漠化发生和发展,导致山区土地资源逐渐枯竭。

A serious phenomenon of stony desert can be seen in the west of Guizhou Prov ince,the divide of Changjiang River and Zhujiang River.Stony desert develo ps mostly on Karst positive landform s and steep valleys,or in sinkholes a nd funnels.It is generated by irrational soil -taking in such sp ots as karst depressons and Karst basins,where it is not easy for stony desert to form.Deforestion and reclamation on slopes accelerates s tony desert.In this case,human acti vities will aggravate occurrence an d development of stony desert,gradually exhuasting land resource in mountainous areas in the province.