dmd.htfunc | R Documentation |
This suite of functions estimates height for forest stands as a function of trees per acre and quadratic mean diameter. Since the dmd.volume function calls these functions, it is not necessary that user's access these directly.
jrzheight(tpa, qmd)
ls2012height(tpa, qmd)
McC1986height(tpa, qmd)
tpa |
Trees per acre. |
qmd |
Stand quadratic mean diameter (inches). |
Returns dominant height (feet) for Jang et al. (2021), Long and Shaw (2012), or McCarter and Long (1986).
Martin W. Ritchie, Research Forester, US Forest Service, Pacific Southwest Research Station. Email: martin.ritchie@usda.gov
Jang, W.S., M.W. Ritchie and J. Zhang (2021) Improved equations for the density management diagram isolines of ponderosa pine stands. For. Sci. 67(1):93-102
Long, J.N. and Shaw, J.D. (2005) A density management diagram for even-aged ponderosa pine stands. West. J. Appl. For. 20(4):205-215.
Long, J.N. and Shaw, J.D. (2012) A density management diagram for even-aged Sierra Nevada mixed-conifer Stands. West. J. Appl. For. 27(4):187-195.
McCarter, J.B. and J.N. Long (1986) A lodgepole pine density management diagram. West. J. Appl. For. 1(1)6-11.
Reineke, L.H. (1933) Perfecting a stand density index for even-aged forests. J. Ag. Res. 46:627-638.
jrzheight(200, 10.2)
ls2012height(200, 10.2)
McC1986height(200,10.2)
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