A tree-by-tree measure of site utilization for grand fir related to stand density index

Albert R. Stage

Treesearch

A tree-by-tree measure of site utilization for grand fir related to stand density index

Informally Refereed

Authors:

Albert R. Stage

Year:

1968

Type:

Research Note

Station:

Rocky Mountain Research Station

Source:

Research Note INT-77. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 7 p.

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Download (PDF 287 KB): https://research.fs.usda.gov/download/treesearch/35604.pdf

Abstract

The usefulness of stand density index (SDI) has been limited by lack of a way to partition its nonlinear expression into additive components to describe the relative stocking of a stand by species or quality classes. In this paper, a linear equation is derived to permit such a partition. A closely related expression for grand fir stocking is given that retains the merits of SDI, but is more nearly proportional to growth of individual trees within a stand. Hence, the partitioning of stocking into components will be more meaningful to the forest manager with this revised form.

Keywords

stand density index, SDI, site utilization

Citation

Stage, Albert R. 1968. A tree-by-tree measure of site utilization for grand fir related to stand density index. Research Note INT-77. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 7 p.