广西弄拉峰丛石山生态重建经验及生态农业结构优化

广西弄拉是一个典型的峰丛石山区，但岩溶地质背景比较特殊。碳酸盐岩地层中含有泥硅质成分，微量元素含量比较丰富，为发展植物物种的多样性提供了条件。自从60年代初，当地居民开始封山育林；80年代开始发展名特优药材和果树。长年的努力，当地居民不但营造了人工次生林，涵养了表层岩溶泉水，而且已经脱贫致富，使生存环境得到了改善，初步形成了立体生态农业结构。然而，其立体生态农业结构比较简单和脆弱，需要优化。不同地貌部位和岩溶地质背景下生态的合理布局，药材和果树的有效管理和集约化生产，和农产品加工业的建设是关键。

Rehabilitation of Ecology and Optimization of Eco-agricultural Structure in Karst Peak Cluster Area in Nongla of Guangxi

Nongla in Mashan County,middle Guangxi is a typical karst peak cluster area, with relative abundant background value of trace elements in the argillaceous and siliceous dolomite of the Donggangling Group of Devonian Since 1960, closing hillsides to facilitate afforestation has been conducted.In 1980s,a lot of local precious herbs, fruits and crops were planted to improve local residents'life.A primary stereo eco agriculture has been built up.But it is still simple and weak,and needs to be improved for sustainable development of both economics and environment.The well adjusted planting in different geomorphic positions and karst geological backgrounds, effective management and intensivism production of herbs and fruits, and construction of processing industry for agricultural products are key points