摘要
本文通过对柳杉等24个喀斯特山地主要适生树种一年生幼苗不同季节的耗水量进行比较研究、各树种幼苗在不同土壤干旱水平(A:无干旱胁迫;B:轻度胁迫;C:中度胁迫;D:重度胁迫)下的耗水量比较研究,结果表明:各树种幼苗耗水量的季节变化为:常绿树种幼苗耗水量为春季>夏季>秋季>冬季,落叶树种幼苗耗水量为夏季>春季>秋季>冬季。不同土壤干旱水平下,各树种幼苗耗水量均表现为:A>B>C>D。
The water consumption of the seedlings of main adaptive tree species in karst upland in different seasons and different drought stress levels （A. no stress; B. slight stress; C. moderate stress; D. serious stress） was studied. The result showed that theseasonal change of the water consumption for seedlings of evergreen species is in the order of spring〉 summer 〉autumn 〉 winter, and for the seedlings of deciduous species the order is summer〉spring〉autumn〉winter; Under different drought stress levels, the water consumption of all the seedlings has a trend of A〉B〉C〉D.
出处
《贵州林业科技》
2006年第3期10-15,9,共7页
Guizhou Forestry Science and Technology
基金
贵州林业厅攻关项目(2001-15)
贵州喀斯特森林生态系统定位研究站
关键词
喀斯特山地
适生树种
耗水量
季节变化
土壤干旱
Karst upland
Adaptive tree species
Water consumption
Seasonal change
Drought stress
