干旱区生态用水和土壤植被承载力综述  

Reveiws on Ecological Water and Soil Water Carrying Capacity in Arid Regions

作　　者：李亚军[1] 金一鸣[1] 余新晓[1] 史宇[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083

出　　处：《水土保持研究》2011年第6期268-271,共4页Research of Soil and Water Conservation

基　　金："十二五"国家科技支撑计划项目"三北地区水源涵养林体系构建技术研究与示范"(2011BAD38B05);林业公益性行业科研专项经费项目"典型森林植被对水资源形成过程的调控研究"(201104005)

摘　　要：干旱区的生态恢复与植被建设均受到水分的严重制约,生态用水和土壤水分植被承载力的研究均为实现地区可持续发展的重要一环。生态用水影响土壤水分补给量,而土壤水分补给量是制约土壤植被承载力的因素之一。因此提高土壤植被承载力需要保证干旱区生态用水总量,而森林植被有保持水土、调节地表径流、增加入渗的功能,能够使得干旱区生态用水量增加,从而提高土壤植被承载力,形成良性循环,最终达到生态系统的稳定。综合提炼多篇相关文献的观点,从生态用水和土壤植被承载力的概念、研究发展现状、在植被建设的指导意义3方面综合阐述,讨论了生态用水以及土壤植被承载力的内在联系。Ecological restoration and vegetation construction are severely restricted by water supply in arid regions.Study on ecological water and soil water carrying capacity has become the key to realize sustainable development.Ecological water influences soil moisture recharge,which is one of the key factors that restrain soil water carrying capacity.Improvement of the soil water carrying capacity has been a guarantee for ecological water in arid regions.In addition,forest vegetation could conserve soil and water,adjust surface runoff and increase infiltration,which add to the amount of ecological water in arid regions.Therefore,soil water carrying capacity will be increased,which will create a virtuous circle and lead to a stable ecosystem.This study summarized the related literature references and discussed the relationship between ecological water and soil water carrying capacity from three aspects including concepts of ecological water and soil water carrying capacity,current development status and importance in vegetation construction.

关 键 词：干旱区 生态用水 植被承载力 自然环境 

分 类 号：TV213.4[水利工程—水文学及水资源]