摘要
岷江上游区内广漠的森林,本是岷江流域得天独厚的大自然保护屏障,然而这些林地多分布在高山峡谷坡面上,由于长期过伐,森林的蓄水保水性能降低,生物多样性遭到破坏,自然灾害频繁,泥石流、滑坡增加,荒漠化面积不断扩大。概述了岷江上游退化森林生态系统的主要特征和现状,提出了恢复与重建的建议。
The luxuriant forests in the upstreams of Minjiang should have provided the natural barrier for the region, however, these weedlands were mostly distributed on the slopes of high mountains and deep gorges. The long-term over-cutting has greatly reduced the water storage and conservation capacity of the forests, which resulted in the damage of bio-diversity, the frequent occurrence of natural disasters,the increase of debris flow and landslide and the constant expansion of desertified area. After tree-felling was forbidden in 1998, the campaign of the development of western region provided the opportunity for the ecological rehabilitation, the restomtion and reconstruction of degraded forest ecosystem in the region,but there still was the long arduous task.
出处
《安徽农业科学》
CAS
北大核心
2006年第23期6281-6282,6285,共3页
Journal of Anhui Agricultural Sciences
基金
国家重点基础研究发展规划项目(2002CB111505)
国家自然科学基金项目(30300047)
关键词
岷江上游
退化森林生态系统
恢复
重建
Upper reach of the Minjiang River
Degraded forest ecosystem
Restoration
Reconstruction
