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- Title
Measured and predicted changes in tree and stand water use following high-intensity thinning of an 8-year-old Eucalyptus nitens plantation.
- Authors
Medhurst, Jane L.; Battaglia, Michael; Beadle, Christopher L.
- Abstract
We investigated changes in the pattern of water use of an 8-year-old Eucalyptus nitens (Deane and Maiden) Maiden plantation soon after thinning. Sap flow sensors using heat pulse technology were deployed across three stands thinned to a final density of 100, 250 or 600 trees ha−1 plus an unthinned control (1250 trees ha−1). Changes in the relationship between tree size and daily water use were measured for 4 to 7 months after thinning. Thinning had no effect on sapwood water content. The increase in tree water use as a result of thinning was driven largely by significant changes in the radial pattern of sap velocity through the sapwood. The use of a canopy fraction factor in the Penman-Monteith equation to account for discontinuous canopies showed promise as a simple and effective method of scaling the model to predict transpiration from thinned plantations.
- Subjects
SAPWOOD; SHINING gum; FOREST ecology; PLANT transpiration; PLANT water requirements; PLANT physiology
- Publication
Tree Physiology, 2002, Vol 22, Issue 11, p775
- ISSN
0829-318X
- Publication type
Article
- DOI
10.1093/treephys/22.11.775