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BANR: A Program to Predict Biomass Yield and Nutrient Withdrawal by Harvest of Southern Hardwood Stands

Informally Refereed

Abstract

Intensive harvest of southern hardwoods can yield biomass in a greatly varied mix. This causes variation in the withdrawal rates of nutrients. A need exists for a computer program to perform biomass and nutrient content calculations on diverse stands. such a program BANR (Biomass And Nutrient Removal) - is described in this paper. It was written for the Hewlett-Packard 9830 and later adapted for Apple IIe and IBM-PC/XT microcomputers. Diameters (DBH) and heights of all trees on a plot of known size is required. Biomass models from published sources for 11 species (including loblolly pine) plus a general equation for small hardwood trees are used to calculate green and dry weights of leaves, branches, bole wood, and bole bark. Harvests can be specified with any combination of tree species, upper and lower DBH limits, and tree portions to be utilized. If available, the user should enter his own tissue nutrient concentrations on the querry of the program. Otherwise, the program defaults to data obtained by the author from Mississippi and Arkansas. Biomass and nutrient withdrawal data are presented in easy-to-read tables. Program listings or magnetic copies and a paper describing the program's use are available on request from the author.

Keywords

BANR

Citation

Francis, John K. 1986. BANR: A Program to Predict Biomass Yield and Nutrient Withdrawal by Harvest of Southern Hardwood Stands. Report. Rio Piedras, Puerto Rico: Institute of Tropical Forestry. 12 p.
https://www.fs.usda.gov/research/treesearch/42944