Long‐term transpiration in two eucalypt species in a native woodland estimated by the heat‐pulse technique
作者:
P. FARRINGTON,
G. A. BARTLE,
G. D. WATSON,
R. B. SALAMA,
期刊:
Australian Journal of Ecology
(WILEY Available online 1994)
卷期:
Volume 19,
issue 1
页码: 17-25
ISSN:0307-692X
年代: 1994
DOI:10.1111/j.1442-9993.1994.tb01538.x
出版商: Blackwell Publishing Ltd
关键词: eucalypts;heat pulse;remnant;salinization;transpiration;Western Australia;woodland
数据来源: WILEY
摘要:
AbstractThe heat‐pulse method was used to estimate transpiration rates continuously for periods up to 2 years in mature trees of Eucalyptus wandoo and Eucalyptus salmonophloia at two topographic locations in a remnant native woodland in the Western Australian wheatbelt. Annual transpiration per tree ranged from about 11400 to 18000 L per tree. Highest transpiration rates occurred in late spring or early summer, depending on rainfall distribution. The trees were able to rapidly utilize water following heavy rain outside the agricultural growing season. Extrapolating transpiration rates from single trees to an area of woodland showed that annual transpiration at the ridge site was 150 mm and 168 mm at a site alongside a drainage line. Scaling up transpiration from individual trees requires caution and should allow for variability in trees and soils. The role of trees in curtailing salinization is discusse
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