摘要
我国干热河谷主要分布于长江、红河、怒江和澜沧江等流域中、上游地区。该区域气候干热、植被稀少、土壤干旱瘠薄、水土流失严重,是我国西南地区典型的生态脆弱区,也是我国植被恢复和生态治理极为困难的区域。文中通过回顾其植被恢复历程,对现有植被演变过程、植被恢复的途径与方法、植物逆境适应保护机制研究及其适宜树种筛选与引种、植被恢复与特色资源培育利用等进行系统比较分析,总结了数十年来植被恢复研究与实践的成功经验和失败教训,阐述了干热河谷植被恢复的现状与发展趋势,提出加速构建长江上游绿色生态安全屏障是实现干热河谷地区及其所在江河流域的经济社会可持续发展和西南地区森林"双增"目标的重要保证。
Dry-hot valleys are mainly distributed in the upper and middle reaches of Yangtze River,Red River,Nu River,Lancang River,etc.They are typical ecologically fragile areas in Southwest China,with hot and dry climate,sparse vegetation,dryand barren soil,and serious water and soil erosion.Vegetation restoration and ecological improvement there are extremely difficult.This paper reviewed the history of vegetation restoration in dry-hot valleys,and made systematic analysis of the evolution process of the existing vegetation,approaches and methods to restore vegetation,research on plant stress adaptation and protection mechanism as well as the selection and introduction of suitable tree species,vegetation restoration and cultivation utilization of specialty resource.Based on the successes and failures of the research and practices of vegetation restoration in decades,the paper systematically made a comparative analysis of revegetation in dry-hot valleys,the paper described the research status and development trend ofvegetation restoration in the dry and hot valleys.It was proposed to accelerate the building of green security barrier along the upper reach of Yangtze River to ensure the achievement of sustainable economic and social development as well as the double increase goal in dry-hot valley region and the river basin in there.
出处
《世界林业研究》
CSCD
北大核心
2011年第4期55-60,共6页
World Forestry Research
基金
"十二五"国家科技支撑项目(2011BAD038B04)
关键词
干热河谷
植被恢复
现状
趋势
dry-hot valley
vegetation restoration
current status
trends
