摘要
本文在分析额济纳绿洲生态系统历史演变的基础上 ,划分了三个生态演变时期 ,即良性循环期、生态恶化期与生态危机期 ;依据绿洲各生态要素间的依存关系与演变规律 ,提出判定绿洲生死存亡的地表水补给量与地下水水位最低临界值以及对绿洲进行综合整治的三条原则与八项措施。
Three periods of ecological succession are divided based on the analysis of the historical succession of the ecosystem of Ejina oasis that are; the favorable circulating period, the ecological deteriorating period and the ecological crisis period. According to the succession laws and the ratations of the ecological elements of oasis, the lowest critical value of groundwater level and the supply volume of surface water which deterne the life and death of oasis ,three principles of comprehensive control for o...
出处
《干旱区资源与环境》
CSSCI
CSCD
2000年第S1期-,共4页
Journal of Arid Land Resources and Environment
关键词
额济纳绿洲
生态危机
临界值
综合整治
Ejina oasis
ecological crisis
critical value
comprehensive control.
