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Nondestructive Indices Related to Aboveground Biomass of Young Loblolly and Sand Pines on Ectomycorrhizal and Fertilizer Plots

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Evidence is presented to support the use of root-collar diameter squared x total height (D²H) as a surrogate measure for aboveground biomass of young pine seedlings. Statistical analyses were based on data from ectomycorrhizal and fertilizer plots of four outplanting sites of loblolly pine (Pinus taeda L.) and of one outplanting site of Choctawhatchee sand pine (P. clausa war. immuginata D. B. Ward) in the southeastern United States. D²H performed well compared with other surrogate measures of interest: H, D, D², and DH. Also, analyses of D²H, log(D²H), and the associated weight and log (weight) data showed that claims of significance based on these surrogate measures agree closely with claims based on the corresponding weight analyses. The concept of plot volume index (PVI), which is defined as the total of D²H values for the surviving trees in the plot, is discussed. Appropriate statistical analysis procedures are presented for PVI as a plot biomass surrogate measure based on total D²H. Forest Sci. 31:419-427.

Keywords: Pinus clausa var. immuginata; Pinus taeda; ectomycorrhizae; fertilization

Document Type: Journal Article

Affiliations: Station Statistician, Southeastern Forest Experiment Station, Forestry Sciences Laboratory, Athens, GA 30602

Publication date: June 1, 1985

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