植物生态学报 ›› 2012, Vol. 36 ›› Issue (9): 1004-1014.DOI: 10.3724/SP.J.1258.2012.01004

• 综述 • 上一篇    

树干液流径向分布格局研究进展

徐飞1,2, 杨风亭1, 王辉民1,*(), 戴晓琴1   

  1. 1中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室, 北京 100101
    2中国科学院大学, 北京 100049
  • 收稿日期:2012-04-20 接受日期:2012-05-31 出版日期:2012-04-20 发布日期:2012-09-06
  • 通讯作者: 王辉民
  • 作者简介:(E-mail: wanghm@igsnrr.ac.cn)

Review of advances in radial patterns of stem sap flow

XU Fei1,2, YANG Feng-Ting1, WANG Hui-Min1,*(), DAI Xiao-Qin1   

  1. 1Qianyanzhou Ecological Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-04-20 Accepted:2012-05-31 Online:2012-04-20 Published:2012-09-06
  • Contact: WANG Hui-Min

摘要:

树干液流径向分布的不均匀性是引起热技术估算单株乃至林分蒸腾误差的主要来源。因此, 了解树干液流径向分布格局并将其定量化, 成为利用热扩散和热脉冲技术准确估算森林蒸腾的必要条件。该文详细介绍了树干液流径向分布格局的研究方法, 总结了目前4种常见的树干液流的径向分布格局, 分析了影响树干液流径向分布格局的内部结构因素和外部环境因素, 阐明了树干液流径向分布格局的时间动态特征及其影响因素, 并提出目前研究中存在的问题和可能的解决方法。

关键词: 径向分布格局, 液流密度, 树干液流, 热技术, 蒸腾

Abstract:

Variability in radial patterns of sap flow is the main source of error in evaluating individual and stand transpiration using thermal techniques. Thus, it is necessary to understand and quantify radial patterns of stem sap flow before accurate estimation of forest transpiration can be conducted. We discuss the methods used to determine radial patterns of sap flow and summarize four main patterns of stem sap flow. We also review the effects of inner structure characteristics and environmental factors on radial patterns of sap flow. In addition, we present the diurnal and seasonal variability in radial patterns of sap flow. Lastly, we propose possible problems in resent research on radial patterns of stem sap flow.

Key words: radial patterns, sap flow density, stem sap flow, thermal techniques, transpiration