凉山州生态环境现状及林业生态工程建设评析

Present Status of Ecological Environment in Lianghsan Prefecture and Evaluation on Accomplishment of Forestry Programs

凉山州地处西南高山峡谷区,生态环境较为脆弱,森林过度采伐,各种自然灾害频繁,农业生产缺乏生态保护屏障;州内退耕还林还草和天然林保护工程在不同程度上存在着政策、技术等多方面问题.只有具体分析立地条件,尽量利用和发挥本地树种优势,在树种结构上配置合理,在生态功能上注意物种之间的交互作用互补,注意恢复植被的连通性和健康生态系统要求的异质性,方能建立稳定的植被群落.

Liangshan Prefecture is located in the cliffy mountainous area in southwest China, the ecological environment is generally weak and fragile. Because of exceeded forest felling in the past few decades, various natural disasters have taken place more frequently and agricultural production has developed slowly for lacking of ecological protection. Some ecological programs, such as 'Returning the Farmland back to Forest or Grassland' and 'Natural Forest Conservation' have been undertaken in the area recently, but there are both policy and technique problems that restrain the environmental amelioration. Stable plant communities might be established when more attention is paid to the consistency of vegetation and heterogeneity of ecosystem through taking advantage of native tree species according to specific site conditions, composing rational species structure and coordinating ecological functions of each species.