Assessing Environmental Control of Sap Flux of Three Tree Species Plantations in Degraded Hilly Lands in South China

Show full item record



Permalink

http://hdl.handle.net/10138/313904

Citation

Wang , Q , Lintunen , A , Zhao , P , Shen , W , Salmon , Y , Chen , X , Ouyang , L , Zhu , L , Ni , G , Sun , D , Rao , X & Holtta , T 2020 , ' Assessing Environmental Control of Sap Flux of Three Tree Species Plantations in Degraded Hilly Lands in South China ' , Forests , vol. 11 , no. 2 , 206 . https://doi.org/10.3390/f11020206

Title: Assessing Environmental Control of Sap Flux of Three Tree Species Plantations in Degraded Hilly Lands in South China
Author: Wang, Qian; Lintunen, Anna; Zhao, Ping; Shen, Weijun; Salmon, Yann; Chen, Xia; Ouyang, Lei; Zhu, Liwei; Ni, Guangyan; Sun, Dan; Rao, Xinquan; Holtta, Teemu
Contributor: University of Helsinki, University of Chinese Academy of Sciences
University of Helsinki, INAR Physics
University of Helsinki, Micrometeorology and biogeochemical cycles
University of Helsinki, University of Chinese Academy of Sciences
University of Helsinki, Viikki Plant Science Centre (ViPS)
Date: 2020-02
Language: eng
Number of pages: 15
Belongs to series: Forests
ISSN: 1999-4907
URI: http://hdl.handle.net/10138/313904
Abstract: Prerequisite for selection of appropriate tree species in afforestation programs is to understand their water use strategy. Acacia mangium Willd., Schima wallichii Choisy, and Cunninghamia lanceolata (Lamb.) Hook are the three main vegetation restoration pioneer species in southern China, but no comparative research on the water use strategy of these three tree species have been reported. Our objective was to gain a detailed understanding of how photosynthetically active radiation (PAR), vapor pressure deficit (VPD), and soil water content (SWC) at different soil depths control the sap flux density (J(s)) in the dry and wet seasons. We measured the J(s) of these three tree species by using the thermal dissipation method in low subtropical China. We found that both S. wallichii and C. lanceolata differed clearly in their stomatal behavior from one season to another, while A. mangium did not. The canopy conductance per sapwood area of S. wallichii and C. lanceolata was very sensitive to VPD in the dry season, but not in the wet season. The J(s) of A. mangium was negatively correlated to SWC in all soil layers and during both seasons, while the other two species were not sensitive to SWC in the deeper layers and only positively correlated to SWC in dry season. Our results demonstrate that the three species have distinct water use strategies and may therefore respond differently to changing climate.
Subject: sap flux density
canopy conductance per sapwood area
dry and wet season
soil water content
Acacia mangium Willd
Schima wallichii Choisy
Cunninghamia lanceolata (Lamb
) Hook
ACACIA-MANGIUM
NIGHTTIME TRANSPIRATION
WATER TRANSPORT
FOREST TYPES
TIME-SERIES
FLOW
RESPONSES
CONDUCTANCE
CARBON
STAND
4112 Forestry
119 Other natural sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
forests_11_00206_v3.pdf 3.487Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record