四川干热河谷地区公路生态植被恢复与重建模式探讨

Discussion of Ecology Vegetation Restoration Models of Roads in Sichuan Dry-hot Valley

分析了四川干热河谷地区公路周边自然植被条件与海拔高度的关系,以国道318线二郎山至康定公路为例,对干热河谷地区公路生态恢复与重建的模式进行了研究,根据道路所处海拔高度的差异把全路段分为二郎山、泸定大渡河、康定瓦斯沟三段,根据各段气候和植被特点确定恢复模式,经过2年的生长观察,证明各恢复模式都取得很好的效果,乔灌木的平均成活率达到85%,草坪地被覆盖率平均达到93%;最后,总结了干热河谷道路生态恢复与重建的特殊技术。

The relationship belween the peripheral vegetation conditions and the altitude of road in Sichuan Dry-Hot valley are analyzed, and the models of restoration are studied. The road was divided into three parts by the different of the altitude that is Erlang Mountain part, Luding Dadu River part and Kangding Wasi valley part. Restoration models were decided by the characteristic of climate and peripheral vegetation. It was proved that all the restoration models had a good effect after 2 years observation. The average survival rate of trees and shrubs was 85% and the average cover index of grass was 93%. And the special technology of vegetation restoration was summarized.