Above- and Belowground Dry Matter Accumulation Pattern Derived from Dimensional Biomass Relationships

Authors: Reed, David D.; Liechty, Hal O.; Jones, Elizabeth A.; Zhang, Y.

Source: Forest Science, Volume 42, Number 2, 1 May 1996 , pp. 236-241(6)

Publisher: Society of American Foresters

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Abstract:

A model of dry matter accumulation pattern is derived from above- and belowground dimensional biomass relationships as a function of basal diameter growth and total height increment. Without loss of generality, the model is illustrated utilizing previous results of analyses with eight years of growth records from precompetitive red pine (Pinus resinosa, Alt.) plantations in northern Michigan. Model behavior corresponds with previous knowledge concerning the seasonal patterns of dry matter accumulation in conifers and with the response of plant allocation patterns to temperature and moisture stress. Changes in accumulation fraction as a function of tree size also agree with previous observations. This model can be developed using existing above- and belowground dimensional biomass equations and functions describing the seasonal growth of diameter and height. The range of its applicability depends on the ranges of applicability of the component equations. Unification of this "mensurational" approach to modeling dry matter accumulation with previous functional balance methods can be achieved by placing appropriate constraints on model components. For. Sci. 42(2):236-241.

Keywords: Shoot:root ratio; dry matter partitioning; carbon allocation

Document Type: Journal article

Affiliations: 1: School of Forestry and Wood Products, 1400 Townsend Drive, Michigan Technological University, Houghton, MI 49931

Publication date: 1996-05-01

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