Estimating Arundo donax shoot biomass |
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Authors: | David F Spencer Pui-Sze Liow Wai Ki Chan Gregory G Ksander Kurt D Getsinger |
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Institution: | 1. USDA-ARS Exotic and Invasive Weeds Research Unit, Department of Plant Science, Mail Stop 4, 1 Shields Avenue, Davis, CA 95616, USA;2. USAERDC Vicksburg, CEERD-EP-P, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA |
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Abstract: | We developed an equation for estimating Arundo donax shoot dry weight from shoot length. The equation, shoot dry weight (g) = 14.254 (standard error = ±0.275) × shoot height2 (m), was as effective at explaining a high proportion of total variation in shoot dry weight (R2 = 0.90) as more complicated equations containing additional morphometric parameters. Tested against two independent datasets, the equation provided accurate estimates of dry weight for shoots ranging from 0.3 to 7.06 m height (dataset 1, P < 0.0001, R2 = 0.87, N = 29; dataset 2, P < 0.0001, R2 = 0.82, N = 192). The equation provides aboveground biomass estimates from stem counts and heights more rapidly than harvest methods. |
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Keywords: | Non-destructive method Giant reed Invasive plant |
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