Advanced   Register
XTBG OpenIR  > 植物生理生态研究组  > 期刊论文

title: Increased water use in dry season in eight dipterocarp species in a common plantation in the northern boundary of Asian tropics
author: Siddiq, Zafar;  Cao, Kun-Fang
Issued Date: 2016
Abstract: The seasonal water use and stand-level transpiration of the important tropical timber tree family, Dipterocarpaceae, have not been well investigated. Here, we characterized the seasonal water use and stand-level transpiration of eight, evergreen, dipterocarps in tropical Southwest China in the 2013 wet and dry seasons: six species grown in monoculture and two species in mixture. We estimated stand-level transpiration using a power model, combining data from 22 trees of all species measured in the two seasons. Despite significant decreases in soil volumetric water content within 1-m depth, predawn leaf water potentials (> -0.5 MPa) of all trees indicated access of roots to water. Daily sap flux density (SFDd) of all species closely responded to vapour pressure deficit (VPD). Dry season VPD increased by 29%, compared to in wet season, resulting 27-52% increased SFDd in six of the eight species. Whole tree daily water use was scaled with diameter at 1.3m height for the 22 trees (r(2) = 0.91 and 0.93 in the wet and dry seasons, respectively). Daily mean stand-level transpiration ranged from 0.63 to 2.23mm d(-1) (mean = 1.05) and from 1.18 to 2.29 mm d(-1) (mean = 1.63) in the wet and dry seasons, respectively. Our results reveal conservative water use of dipterocarps and increased transpiration in dry season when a stable soil water source is available. In comparison with introduced fast-growing timber species, such as Eucalyptus and Acacia mangium, dipterocarp trees and forests consume much less water, making them more suitable as plantation timber crops for the region.
Source: ECOHYDROLOGY
Appears in Collections:植物生理生态研究组_期刊论文

Files in This Item:

File SizeFormat
Increased water use in dry season in eight dipterocarp species in a common plantation in the northern boundary of Asian tropics.pdf574KbAdobe PDFView  Download


全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Siddiq, Zafar,Cao, Kun-Fang. Increased Water Use In Dry Season In Eight Dipterocarp Species In A Common Plantation In The Northern Boundary Of Asian Tropics[J]. Ecohydrology,2016,9(5):871-881.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Siddiq, Zafar]'s Articles
 [Cao, Kun-Fang]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Siddiq, Zafar]‘s Articles
 [Cao, Kun-Fang]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace