[1]喻阳华,李光容,皮发剑,等.赤水河上游主要树种叶片与枝条持水性能[J].水土保持研究,2016,23(02):171-176.
　YU Yanghua,LI Guangrong,PI Fajian,et al.Water Holding Capacities of Leaves and Branches in the Upper Reaches of Chishui River[J].Research of Soil and Water Conservation,2016,23(02):171-176.
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赤水河上游主要树种叶片与枝条持水性能

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年02期 页码: 171-176 栏目: 出版日期: 2016-04-28
Title:
Water Holding Capacities of Leaves and Branches in the Upper Reaches of Chishui River
作者:
喻阳华1,2, 李光容1, 皮发剑3, 严令斌1, 喻理飞3, 黄宗胜1
1. 贵州大学 林学院, 贵阳 550025;
2. 仁怀市环境保护局, 贵州 仁怀 564500;
3. 贵州大学 生命科学学院, 贵阳 550025
Author(s):
YU Yanghua1,2, LI Guangrong1, PI Fajian3, YAN Lingbin1, YU Lifei3, HUANG Zongsheng1
1. College of Forestry, Guizhou University, Guiyang 550025, China;
2. Renhuai Environmental Protection Agency, Renhuai, Guizhou 564500, China;
3. College of Life Science, Guizhou University, Guiyang 550025, China
关键词:
叶片; 枝条; 持水; 失水; 功能群; 赤水河上游
Keywords:
leaves; branches; water holding; water loss; functional group; upper reaches of Chishui River
分类号:
S715.7
摘要:
以赤水河上游32个树种为对象，采用吸水法和自然失水法测定叶片和枝条的持水能力。结果表明：叶片最大持水倍数为0.33~1.59，表面被毛的叶片持水能力相对较强。枝条的最大持水率多小于自然含水率，说明单位质量枝条的持水能力较叶片低。叶片和枝条均表现为持水速率大于失水速率，二者与时间的关系可用幂函数模型较好地表达。通过叶片最大持水倍数可推导出持水速率与时间的关系式，但不能推导出失水速率与时间的关系式。叶片质地、粗糙度、绒毛、最大持水倍数、持水曲线常数项是决定其持水能力差异的主要因素，通过RDA排序可将32个树种的叶片划分为低持水、中低持水、中持水和高持水4类功能群。上述研究结果可用于赤水河上游水源涵养林树种选择及森林结构配置。
Abstract:
Taking the 32 plants in the upper reaches of Chishui River as the examples of the research, we measured the water-holding capacity of the leaves and branches by using absorption method and natural loss method. The results showed that the maximum water-holding ratio of leaves ranged from 0.33 to 1.59, the water holding capacity of leaf surface coat was relatively strong. The maximum water-holding ratio was lower than the natural water-holding ratio, which means that the water-holding capacity of unit mass of branches was lower than the leaves. The water-holding ratio of leaves and branches was higher than the water loss ratio, and the relationship between water holding ratio, water loss ratio and the time can be described by power function model. We can deduce the relationship between water-holding ratio of the leaves and the time based on the maximum water-holding ratio, but we cannot deduce the relationship between the water loss ratio and the time. Leaf texture, roughness, villous, the maximum water holding ratio, water retention curves of constant items were the key factors on water holding capacity. The 32 plants in this area can be divided into 4 types of holding functional groups such as the low water holding, medium-low water holding, medium water holding and high water holding using RDA ordination. The research can make the contribution to the species selection of conservation forests and the forest structure configuration in the upper reaches of Chishui River.

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备注/Memo

收稿日期:2015-04-07;改回日期:2015-04-13。
基金项目:贵州茅台科技联合资助项目[黔科合茅科联字（2009）7007]；贵州省环境保护项目“赤水河上游退化植被水源涵养功能评价及恢复对策”（2013-09）；贵州省社会发展攻关项目[黔科合SY字（2012）3012]
作者简介:喻阳华(1984-),男,贵州仁怀人,博士在读,主要从事退化森林生态系统恢复研究。E-mail:yuyanghua2003@163.com
通讯作者:喻理飞(1963-),男,贵州贵阳人,教授,博士生导师,主要从事退化生态系统修复研究。E-mail:gdyulifei@163.com

更新日期/Last Update: 1900-01-01