%0 Journal Article
%T STUDIED ON THE RELATIONSHIP BETWEEN PHYSIOLOGICAL ECOLOGY OF DROUGHT-RESISTANCE IN CARAGANA KORSHINSKII AND SOIL WATER<br>柠条抗旱的生理生态与土壤水分关系的研究
%A Yang Wenbin
%A <br>杨文斌
%J 生态学报
%D 1997
%I 
%X 采用LI－1600气孔计和压力室测试了风沙土上生长的柠条的SPAC系统的水分关系和P－V水分特征曲线，结果表明：当沙土含水率（W）的水分特征曲线的回归方程为：ψs=-40．32196×0．427905W，沙土平均含水率大于45％，柠条固沙林生长正常，叶水势高。沙土含水率小于4．5％时，柠条生长速度显著下降，柠条清晨叶水势（ψm）与沙土含水率（W）的回归方程为：ψm=－0．35926·e6．31144／W，风沙土上生长的柠条的“经济水阈”大约在4．5％左右，“生命水阈”大约在3．5％左右。
%K water potential of leave in early morning
%K water potential of soil
%K turgor
%K potential<br>柠条
%K 抗旱性
%K 生理生态
%K 土壤水分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=372D59F5025E9A35865920C97D6CAE5F&yid=5370399DC954B911&vid=BCA2697F357F2001&iid=38B194292C032A66&sid=1DF3F9D75A12D97B&eid=5B5B75F4854B8331&journal_id=1000-0933&journal_name=生态学报&referenced_num=37&reference_num=8