引种台湾桤木的蒸腾特性及其影响因子
文献类型:期刊论文
作者 | 朱万泽![]() |
刊名 | 四川林业科技
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出版日期 | 2005 |
卷号 | 26期号:1页码:9-14 |
关键词 | 台湾桤木 蒸腾速率 影响因子 |
其他题名 | Transpiration Characteristics of Alnus formosana introduced from Taiwan and their Influencing Factors |
通讯作者 | 朱万泽 |
合作状况 | 其它 |
中文摘要 | 采用L1-6400光合测定系统对引种2a生台湾桤木苗木的蒸腾作用及环境因子进行研究。结果表明:(1)在整个生长期,叶片蒸腾速率日变化均表现为宽大的单峰型曲线,以13:00~15:00时左右蒸腾速率最高,不同部位叶片在不同生长期峰值有所不同,属非蒸腾午休型植物;(2)蒸腾速率季节变化表现为单峰曲线,以7月为最高,整个生长期叶片平均蒸腾速率为3.116mmol·m^-2·s^-1~3.383mmol·m^-2·s^-1;(3)在光响应过程中,蒸腾速率的变化与光合有效辐射和气孔导度的变化密切相关;(4)光合有效辐射(Par)、气孔导度(Cond)、空气温度(Tair)和叶面水汽压亏缺(Vpdl)是影响蒸腾速率日变化的主要生理生态因子;以Par、Cond、Vpdl、Tair和相对湿度(RH)对蒸腾速率季节变化的直接作用为明显。 |
英文摘要 | T he t ranspirat ion characterist ics of two years old seedlings of introduced Alnus f ormosana and its influencing factors were studied by using L1-6400 photosynthetic system in this paper. The main result s showed as follow s: ( 1) T he diurnal change of t ranspiration rate ( Tr) of it s leaves during the w hole g row th period presented a sort of w ide and one-peak ty pe curve, the peak v alue occurred at about betw een 13B00 and 15B00, the leaves at different posit ions had varied peak v alues during various seasons, and A . f ormosana belonged to a non-t ranspiration midday-rest plant ; ( 2) The seasonal changes of Tr of the various leaves all show ed the one-peak curve, and the max imum of Tr during the whole grow th period appeared in July, and the average Tr of leaves was between 3. 116 mmol/ ( m 2#s) and 3. 383 mmol/ ( m 2#s) ; ( 3) The changes of T r w ere closely related to variat ions of photosy nthetic act ive radiat ion( Par) and conductance ( Cond) during the whole process of lig ht response; ( 4) The Par, Cond, air temperature ( Tair) and vapor pressure def icit on leaf ( Vpdl) w ere main factors that af fected the diurnal changes of Tr. The path coef ficient analysis indicated that the Par, Cond, Vpdl and the relat ive humidity ( RH) w ere the most important direct factors influencing the seasonal changes of Tr. |
分类号 | S718.43 |
资助信息 | 国家林业局948项目(编号:99 4 03) |
语种 | 中文 |
公开日期 | 2010-07-15 |
源URL | [http://ir.imde.ac.cn/handle/131551/698] ![]() |
专题 | 成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前) 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
推荐引用方式 GB/T 7714 | 朱万泽. 引种台湾桤木的蒸腾特性及其影响因子[J]. 四川林业科技,2005,26(1):9-14. |
APA | 朱万泽.(2005).引种台湾桤木的蒸腾特性及其影响因子.四川林业科技,26(1),9-14. |
MLA | 朱万泽."引种台湾桤木的蒸腾特性及其影响因子".四川林业科技 26.1(2005):9-14. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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