Frontiers of Forestry in China

, Volume 4, Issue 2, pp 191–200

Partition of nocturnal sap flow in Acacia mangium and its implication for estimating the whole-tree transpiration

  • Hua Wang
  • Ping Zhao
  • Xi’an Cai
  • Ling Ma
  • Xingquan Rao
  • Xiaoping Zeng
  • Quan Wang
Research Article

DOI: 10.1007/s11461-009-0017-3

Cite this article as:
Wang, H., Zhao, P., Cai, X. et al. Front. For. China (2009) 4: 191. doi:10.1007/s11461-009-0017-3
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Abstract

We analyzed the partition of nocturnal sap flow into refilling of internal water storage and transpiration in Acacia mangium. Sap flow of trees was monitored continuously with Granier’s sensors for estimating the whole-tree transpiration. Possible night transpiration and stomatal conductance at the leaf level in the canopy were measured with a LI-6400 photosynthesis measuring system. For nocturnal leaf transpiration and stomatal conductance were weak, nocturnal sap flow of mature A. mangium trees was mainly associated with water recharge in the trunk. No significant change in night water recharge of the trunk was found at both seasonal and inter-annual scales. Morphological features of trees including diameter at the breast height (DBH), tree height, and canopy size could explain variances of night water recharge. Furthermore, although the contribution of nocturnal sap flow to the total transpiration varied among seasons and DBH classes, the error caused by night water recharge on wholetree transpiration was negligible.

Keywords

Acacia mangiumGranier’s thermal dissipation probe methodnocturnal sap flownocturnal transpiration

Copyright information

© Higher Education Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Hua Wang
    • 1
    • 2
  • Ping Zhao
    • 1
  • Xi’an Cai
    • 1
  • Ling Ma
    • 1
  • Xingquan Rao
    • 1
  • Xiaoping Zeng
    • 1
  • Quan Wang
    • 3
  1. 1.South China Institute of BotanyChinese Academy of SciencesGuangzhouChina
  2. 2.Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina
  3. 3.Institute of SilvicultureShizuoka UniversityShizuokaJapan