首页 | 本学科首页   官方微博 | 高级检索  
   检索      

樟科幼树水分生理特征的种间差异和相关性分析
引用本文:常宏,赵广东,史作民,王兵,厉月桥,陈传松,陈和东.樟科幼树水分生理特征的种间差异和相关性分析[J].热带亚热带植物学报,2018,26(5):457-464.
作者姓名:常宏  赵广东  史作民  王兵  厉月桥  陈传松  陈和东
作者单位:中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态环境重点实验室;中国林业科学研究院亚热带林业实验中心
基金项目:国家重点研发计划项目(2016YFD0600201);国家自然科学基金项目(31170306)资助
摘    要:为了阐明樟科(Lauraceae)幼树的水分生理特征,比较了同质园中自然生长的5年生刨花楠(Machilus pauhoi)、香樟(Cinnamomum camphora)和闽楠(Phoebe bournei)幼树在生长季节叶片的水分生理特征和地径(D)、株高(H)的差异。结果表明,香樟的相对含水量(RWC)、叶片水势(Ψ)、枝条木质部比导率(Ks)都显著高于闽楠和刨花楠(P0.05),而枝条木质部导水损失率(PLC)则显著低于闽楠和刨花楠(P0.05),说明香樟具有更高的保水能力、水分传输效率,并对水分缺失具有更高的抵抗力。3物种幼树均会因枝条空穴化的加强而降低枝条水分的运输效率。刨花楠幼树通过提高水分利用效率以应对导水效率的降低,香樟幼树叶片具有较高的含水量,气孔保持膨胀,可实现较高的蒸腾速率,闽楠幼树通过提高水分运输的效率和安全性以维持叶片相对含水量。

关 键 词:刨花楠  香樟  闽楠  水分生理  水分利用策略
收稿时间:2017/11/22 0:00:00
修稿时间:2018/3/6 0:00:00

Interspecific Comparisons and Correlation Analysis of Water Physiological Characteristics of Tree Saplings of Lauraceae
CHANG Hong,ZHAO Guang-dong,SHI Zuo-min,WANG Bing,LI Yue-qiao,CHEN Chuan-song and CHEN He-dong.Interspecific Comparisons and Correlation Analysis of Water Physiological Characteristics of Tree Saplings of Lauraceae[J].Journal of Tropical and Subtropical Botany,2018,26(5):457-464.
Authors:CHANG Hong  ZHAO Guang-dong  SHI Zuo-min  WANG Bing  LI Yue-qiao  CHEN Chuan-song and CHEN He-dong
Institution:Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China,Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China,Experimental Center of Subtropical Forestry, Chinese Academy of Forestry, Fenyi 336600, Jiangxi, China,Experimental Center of Subtropical Forestry, Chinese Academy of Forestry, Fenyi 336600, Jiangxi, China and Experimental Center of Subtropical Forestry, Chinese Academy of Forestry, Fenyi 336600, Jiangxi, China
Abstract:
Keywords:Machilus pauhoi  Cinnamomum camphora  Phoebe bournei  Water physiology  Water use strategy
本文献已被 CNKI 等数据库收录!
点击此处可从《热带亚热带植物学报》浏览原始摘要信息
点击此处可从《热带亚热带植物学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号