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Site Index Curves for Young Hybrid Larch Growing on Former Farmland in Sweden
Department of Energy and Technology, Swedish University of Agricultural Sciences, Uppsala 75007, Sweden
Received: 7 May 2012; in revised form: 27 June 2012 / Accepted: 13 August 2012 / Published: 21 August 2012
Abstract: Site index (SI) curves for H20 (dominant height at 20 years total age) were constructed for hybrid larch (Larix × eurolepis Henry) growing in 26 stands on former farmland in southern and central Sweden (Latitude 56–60° N.). The mean total age of the stands was 23 ± 10 (range 17–49) years; the mean diameter at breast height (ob) was 16 (7–34) cm; the mean height was 14 (8–29) m; and the stands had a mean density of 993 (266–2195) stems ha−1. A model derived by Cieszewski (2001) performed best for the data. The model explained 99% of the observed variation in height development. No apparent bias across the range of predicted site indices was found. SI was examined in relation to soil types. Multiple samples were available for three soil types: light clay, medium clay and till. There were no significant differences between these soil types with respect to the choice of SI curve.
Keywords: farmland; hybrid larch; Larix × eurolepis Henry; site index; soil types; top height; total age
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MDPI and ACS Style
Johansson, T. Site Index Curves for Young Hybrid Larch Growing on Former Farmland in Sweden. Forests 2012, 3, 723-735.
Johansson T. Site Index Curves for Young Hybrid Larch Growing on Former Farmland in Sweden. Forests. 2012; 3(3):723-735.
Johansson, Tord. 2012. "Site Index Curves for Young Hybrid Larch Growing on Former Farmland in Sweden." Forests 3, no. 3: 723-735.