Loading content, please wait..
loading..
Logo
Version 3.21
or
Authors Leng, B; Cao, KF
Author Full Name Leng, Bing; Cao, Kun-Fang
Title The sap flow of six tree species and stand water use of a mangrove forest in Hainan, China
Source GLOBAL ECOLOGY AND CONSERVATION
Language English
Document Type Article
Author Keywords Mangrove; Sap flow; Stand water use; Stomatal response
Keywords Plus AVICENNIA-GERMINANS; GAS-EXCHANGE; RAIN-FOREST; TRANSPIRATION; EVERGREEN; CONDUCTANCE; RATES; FLUX; SALINITY; CROWN
Abstract Mangrove forests grow in coastal saline environments and, little is known about the stand water use (S) and regulation mechanisms of mangrove forests, particularly in the eastern mangrove group. We measured the xylem sap flow density (SFD) of six tree species for two years in a tropical mangrove forest on Hainan Island, China, which is under a monsoon climate. Bimodal daily SFD patterns were observed in all six species in spring and summer. The sap flow of all species were suppressed in winter strongly and also in spring. The annual water use per tree was positively correlated with diameter at breast height (DBH) (R-2 1/4 0.81-0.89, P < 0.05). By scaling up from individual trees, we found that the S values of two mangrove plots ranged from 269.19 to 357.27 mm y(-1) between the two study years, accounting for 18-22% of the annual rainfall. These S values are similar to those of other mangrove and tropical forests with similar stand basal areas. The crown conductance sensitivity (mc) to ln VPD (vapor pressure deficit) was strongly correlated with reference crown conductance (GCref) at 1 kPa VPD across all species. The slope value between mc and GCref divided the six species into two groups, suggesting Bruguiera sexangula, Rhizophora apiculata and Sonneratia alba were isohydric, Excoecaria agallocha, B. s. var. rhymchopetala and Xylocarpus granatum were anisohydric. The results of this study will be useful for modeling ecosystem services of mangrove ecosystems facing climate change. (C) 2020 The Authors. Published by Elsevier B.V.
Author Address [Leng, Bing; Cao, Kun-Fang] Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Guangxi, Peoples R China; [Cao, Kun-Fang] Guangxi Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Plant Ecophysiol & Evolut Grp, Nanning 530004, Guangxi, Peoples R China
Reprint Address Cao, KF (corresponding author), Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Guangxi, Peoples R China.
E-mail Address lengbinggx@qq.com; kunfangcao@gxu.edu.cn
Funding Agency and Grant Number National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670406]; Bagui scholarship of Guangxi Zhuang Autonomous Region [C33600992001]
Funding Text This study was supported by a grant from the National Natural Science Foundation of China (Grant no. 31670406) and a Bagui scholarship of Guangxi Zhuang Autonomous Region (C33600992001).
Publisher ELSEVIER
Publisher City AMSTERDAM
Publisher Address RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN 2351-9894
29-Character Source Abbreviation GLOB ECOL CONSERV
ISO Source Abbreviation Glob. Ecol. Conserv.
Publication Date DEC
Year Published 2020
Volume 24
Article Number e01233
Digital Object Identifier (DOI) 10.1016/j.gecco.2020.e01233
Page Count 12
Web of Science Category Biodiversity Conservation; Ecology
Subject Category Biodiversity & Conservation; Environmental Sciences & Ecology
Document Delivery Number PT2WK
Unique Article Identifier WOS:000608478800015
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed