生态脆弱地区树木休眠期间水分代谢均衡探讨  

THE STUDY ON WATER METABOLIC BALANCE DURING THE PERIOD OF TREES' DORMANCY IN THE WEAK ECOLOGICAL REGION

作　　者：斯琴[1] 那平山[1] 王波[2] 

机构地区：[1]内蒙古农业大学林学院,呼和浩特010019 [2]内蒙古农业大学生态环境学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2005年第2期24-27,共4页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金项目资助(40162003)

摘　　要：在生态脆弱地区,树木休眠期间水分代谢与均衡,是维持树木生存与繁衍的关键,不可忽略不计。初步研究结果表明,在休眠期间各树木体内含水量差异较大。从49.86%～39.36%,含水量减少幅度在5%～9%,最佳含水量为35%～48%,当含水量减少至25%左右,难以繁衍,低于20%树木死亡。休眠期间维持树木体内水分均衡,是冻结滞水。将为西北干旱半干旱地区,可持续发展林业工程,荒淡化防治等,提供科学理论依据和技术方法。In the weak ecological region, water metabolism ＆ balance of trees during the period of their dormancy is the key to keep trees living and reproducing. And it can not be neglected. It showed by primary studies that water content among trees during the period of their dormancy was different. From 49.86% to 39.36% ,the decrease it was the frozen stagnant water to support water metabolism ＆ balance of trees during the period of their dormancy. It will provide scientific base and technologic measures for the develoment in the forestry engineering, desert control and so on.

关 键 词：树木休眠期 水分代谢均衡 繁衍极限值 

分 类 号：S718.45[农业科学—林学]