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Title: Maximum growth potential in loblolly pine: results from a 47-year-old spacing study in Hawaii

Source: Can. J. For. Res. 40:1914-1929

Author(s)Samuelson, Lisa J.; Eberhardt, Thomas L.; Butnor, John R.; Stokes, Tom A.; Johnsen, Kurt H.

Publication Year: 2010  View PDF »

Category: Journal Articles

Abstract: Growth, allocation to woody root biomass, wood properties, leaf physiology, and shoot morphology were examined in a 47-year-old loblolly pine (Pinus taeda L.) density trial located in Maui, Hawaii, to determine if stands continued to carry the high density, basal area, and volume reported at younger ages and to identify potential factors controlling expression of maximum growth potential. Basal area and volume were similar among spacings (square: 1.8, 2.4, 3.0, and 3.7 m) and averaged 93 m2·ha-1 and 1076 m3·ha-1, respectively, and were double the maxima reported for loblolly pine in its native range. Spacing had a significant influence on density, quadratic mean diameter, and height. Ring-specific gravity and percent late wood were similar among spacing treatments but values were high compared to mainland stands. Leaf light-saturated net photosynthesis, dark respiration, stomatal conductance, and quantum yield were comparable with values reported for loblolly pine in its native range. Foliar calcium concentrations, specific leaf area, and flush number were high in the Hawaii study. Higher carrying capacity in Hawaii may be related to a more favorable climate conducive to year-round leaf carbon gain, high nutrient availability, increased flushing, and less allocation to belowground mass.

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 2,372 kb(s)

Date posted: 11/04/2010

This publication is also viewable on Treesearch:  view
RITS Product ID: 36216

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