关键词: 石灰岩, 荒山, 逆向演替, 豆科灌木, 绿色工程

Abstract: Widely distributed in the south of China, the limestone barren hills are a result of regressive succession under the intervention of long-term predatory farming activities of mankind. The productivity of these hills is low and how to make rational use of them is a problem to be solved. Based on systematic analysis and evaluation of the regressive succession in limestone mountainous regions and the various existing ways of utilization, this article presents a new way of utilization, that is, to produce leguminous bush fodder crops on limestone hills. This new way will make it possible to break a new path for the exploitation and utilization of the limestone barren hills, and it will become a green-project with profound significance in southern limestone mountainous regions.

Key words: limestone, barren hill, regressive succession, leguminious bush, green project