岩溶地区石山灌草丛草地演替及其培育和利用

在阐述了石山灌草丛草地的涵义与特征及分析了石山灌草丛草地的形成与植被演替、石山的传统利用方式及其评价的基础上,针对石山基况低劣和现有植被改良方式速度慢、易退化及其生态效益和经济效益低下的现状,并在石山建植灌草丛草地成功实践的基础上,认为石山生态修复和开发利用应遵循其植被系统的自然演替规律,借助进展演替的动力,建造能体现石山的自然条件、经济条件和生产条件的人工生态系统;其关键是要选择适合于石山贫瘠生境,能迅速生长、繁殖的豆科灌木和豆科藤本植物.据此,提出了在石山封育、补播和建植豆科饲用灌木、豆科饲用藤本植物和天然草本植物的新方式,选育出适合广西石山灌草丛草地培育利用的豆科饲用灌木和豆科藤本植物:饲用金合欢Acacia sinuata、大翼豆Macroptilium atropurpureum、葛藤Pueraria lobata,并就发展岩溶地区草业科技和教育提出具体建议.

Succession of shrubby grassland of rocky mountain and its improvement and utilization in Karst areas

On the basis of expounding the concept and characteristics of shrubby grassland of rock mountain,and analysis of formation,vegetation succession and methods of traditional utilization of the grassland,focused on the present situation of fragile ecosystem and low ecological and economic benefit,this article presents a new viewpoint as the solution.The construction of artificial ecological system must comply with the natural succession and be with the aid of impetus of progressive succession of vegetation system in the ecological restoration,development and utilization of rocky mountain.The key to improving the ecosystem is to select leguminous shrub and vine that could adapt the local ecological environment and grow rapidly.The proper leguminous fodder shrub and vine in Guangxi,such as Acacia sinuata,Macroptilium atropurpureum,Pueraria lobata could be utilized.