桂西峰丛岩溶区的环境特点及农业生态系统优化设计

桂西岩溶峰丛山区生态系统功能脆弱、抗干扰能力低 ,面临严重的生态危机 ,急需修复和重建。以生态学的原理与方法为指导 ,进行土地利用的优化设计 ,调整农村产业结构 ,通过全面封育与先锋群落的构建 ,实行乔灌藤草优化配置、生态防护林体系与特色农林产品基地建设结合 ,恢复良好的森林植被 ,涵养表层岩溶水 ,改善生存环境 ,进行不同地貌部位和岩溶地质背景下适生植物合理布局 ,是峰丛岩溶区生态恢复重建的基本步骤。

Environmental characteristics and ecological rehabilitation and optimization of ecoagricultural system in karst peak cluster areas in Western Guangxi

In Western Guangxi,the ecosystem function of karst peak cluster areas is fragile and anti-turbulence ability is absent,raising the risk of the frequent nature disaster. According to the method and principles of ecology,rehabilitating the forest vegetation to adjust structure of rural produce,optimizing agriculture internal developing proportion,exploring various effective models for sustainable agriculture development is the basic way to remedy and reconstruct the ecosystem of karst areas. The type of the barren hill and the local weather pattern are required to seal a mountain pass of limestone hill and construct vegetation in different zone with indigenous species of arbor,shrub,grass,vine and optimizing their combination;to select excellent local tree species,especially the fast-growth evergreen broadleaves tree species as main species for woodland reconstruction. The well-adjusted planting in different geomorphic positions and karst geological backgrounds,will develope special local product and promote economic development and environmental improvement.