中国南方山地的土地荒漠化初探

我国的土地沙漠化已不仅仅在北方干旱、半干旱、包括部分半湿润地区, 而且在我国不少湿润和半湿润地带的东部平原(如黄淮海平原等)、沿海地区以及南方山地区也有发生, 其环境退化过程所包括的内容已不局限于"风沙化", 还包括了"砂石化"的类似砾质荒漠景观和山地丘陵斜坡的流水侵蚀造成的劣地景观, 内容较为丰富, 因此对我国南方山区的环境趋向于类似荒漠条件的退化过程, 我们采用了较广义的土地荒漠化的含义。

Preliminary Approach to Mountain Desertification In Southern China

Land desertification not only occurred in arid and semiarid zones, including parts of subhumid region of northern china, but also appeared on quite a few eastern plains(e.g. Huang-Hui-Hai Plain) in humid and subhumid zones, coastal zones, and mountains of southern China. The implication embraced in the processes of environment degradation, beyond the bounds of "blownsand", includes "gravelization" landscapes similar to gravel desert and deteriorated mountain slopes resulting from water erosion. Owing to its varied contents we use the term desertification in a broad sense as we explore the degradation processes of desert-like conditions taking place in mountainous environments of southern China.