Journal article

Comparison of interception, forest floor evaporation and transpiration in Pinus radiata and Eucalyptus globulus plantations

RG Benyon, TM Doody

Hydrological Processes | WILEY | Published : 2015

Abstract

Studies of evapotranspiration (ET) processes in forests often only measure one component of total ET, most commonly interception. This study examined all three components of annual ET (interception, evaporation from the forest floor and transpiration) and the correlations between them at 18 plantation forest sites in two species. All plantations had closed canopies, and sparse or no understorey. Single-sided leaf area index averaged 3.5 (standard deviation ±0.5) in Eucalyptus globulus Labill. and 6.1 (±0.8) in Pinus radiata D.Don. Measurements included annual totals of rainfall in the open and under the canopy, stem flow (four sites only), evaporation from the forest floor and transpiration ..

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Funding Acknowledgements

We gratefully acknowledge the technical support of Michele Michael, Colleen Bernie, David Gritton, Kevin Nickolls, Phill Keeley, Leroy Stewart and John Larmour. Data collection and analysis were funded by the CSIRO, the Natural Heritage Trust, the South Australian Department of Water, Land and Biodiversity Conservation, South East Natural Resources Management Board, The South East Catchment Water Management Board, Forestry SA, the Glenelg Hopkins Catchment Management Authority, Forest and Wood Products Australia, the Green Triangle Regional Plantation Committee, Auspine, Green Triangle Forest Products and Timbercorp. Access to field sites was provided by Woakwine, ForestrySA, Green Triangle Forest Products, Timbercorp, Victorian Department of Primary Industries and Balak Park Pty Ltd. We also thank Dr David McJannet and Dr Kate Holland for reviewing a draft of the manuscript.