Use of a forest sapwood area index to explain long-term variability in mean annual evapotranspiration and streamflow in moist eucalypt forests
Richard G Benyon, Patrick NJ Lane, Dominik Jaskierniak, George Kuczera, Shane R Haydon
Water Resources Research | AMER GEOPHYSICAL UNION | Published : 2015
Mean sapwood thickness, measured in fifteen 73 year old Eucalyptus regnans and E. delegatensis stands, correlated strongly with forest overstorey stocking density (R2 0.72). This curvilinear relationship was used with routine forest stocking density and basal area measurements to estimate sapwood area of the forest overstorey at various times in 15 research catchments in undisturbed and disturbed forests located in the Great Dividing Range, Victoria, Australia. Up to 45 years of annual precipitation and streamflow data available from the 15 catchments were used to examine relationships between mean annual loss (evapotranspiration estimated as mean annual precipitation minus mean annual strea..View full abstract
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Awarded by Australian Research Council
The data supporting Figures 2 and 3 are available from the corresponding author. Data sources for other figures are listed in Table 2. The Melbourne Water Corporation and Australian Research Council (LP110200194) funded this study. Phil Noske assisted with sapwood measurement in the three 26 year old stands. Numerous researchers and field staff diligently collected and analyzed streamflow, rainfall and forest inventory data over many years. We also thank three anonymous reviewers.