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• 1. [Article] A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California

  Summaries from 49 published articles on tree volume and taper equations are presented for 39 tree species found in California, Oregon, Washington, British Columbia, southeast Alaska, Idaho, and western ...

  Citation × Citation Citation Abstract Copy Title: A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California Author: Oregon State University. Forest Research Laboratory, Hann, David W. Summaries from 49 published articles on tree volume and taper equations are presented for 39 tree species found in California, Oregon, Washington, British Columbia, southeast Alaska, Idaho, and western Montana. The summaries are organized by species and then by type of equation (volume or taper). Each summary describes the types of dependent variables predicted by the equations and the geographic location, number of trees, range in DBH, and range in total height for trees in the sample used to develop the equations. Title: A key to the literature presenting tree volume and taper equations for species in the Pacific Northwest and California Author: Oregon State University. Forest Research Laboratory, Hann, David W. Summaries from 49 published articles on tree volume and taper equations are presented for 39 tree species found in California, Oregon, Washington, British Columbia, southeast Alaska, Idaho, and western Montana. The summaries are organized by species and then by type of equation (volume or taper). Each summary describes the types of dependent variables predicted by the equations and the geographic location, number of trees, range in DBH, and range in total height for trees in the sample used to develop the equations. Close

• 2. [Article] Equations for predicting the largest crown width of stand-grown trees in western Oregon

  Largest crown width (LCW) equations for stand-grown trees were developed for 14 tree species found in western Oregon. The equations are used in the growth-and-yield model ORGANON and in the stand-visualization ...

  Citation × Citation Citation Abstract Copy Title: Equations for predicting the largest crown width of stand-grown trees in western Oregon Author: Oregon State University. Forest Research Laboratory, Hann, David W. Largest crown width (LCW) equations for stand-grown trees were developed for 14 tree species found in western Oregon. The equations are used in the growth-and-yield model ORGANON and in the stand-visualization program VIZ4ST. They were constructed such that LCW equals the maximum crown width of open-grown trees when the crown ratio is equal to one. Tree measurements needed for the equations are diameter at breast height (in.), total tree height (ft), and crown length (ft). Title: Equations for predicting the largest crown width of stand-grown trees in western Oregon Author: Oregon State University. Forest Research Laboratory, Hann, David W. Largest crown width (LCW) equations for stand-grown trees were developed for 14 tree species found in western Oregon. The equations are used in the growth-and-yield model ORGANON and in the stand-visualization program VIZ4ST. They were constructed such that LCW equals the maximum crown width of open-grown trees when the crown ratio is equal to one. Tree measurements needed for the equations are diameter at breast height (in.), total tree height (ft), and crown length (ft). Close

• 3. [Article] A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California

  Summaries from 49 published articles on site-index and dominant-heightgrowth curves and equations are presented for 20 tree species or species groups found in California, Oregon, Washington, British Columbia, ...

  Citation × Citation Citation Abstract Copy Title: A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California Author: Oregon State University. Forest Research Laboratory, Hann, David W. Summaries from 49 published articles on site-index and dominant-heightgrowth curves and equations are presented for 20 tree species or species groups found in California, Oregon, Washington, British Columbia, southeastern Alaska, Idaho, and western Montana. The summaries are organized by species. Each summary describes the modeling approach, type of curves/ equations, base age, and type of age presented in the article. In addition, the geographic location, number of trees or plots, range in age, and range in site index used to develop the curves/equations are also described. Title: A key to the literature presenting site-index and dominant-height-growth curves and equations for species in the Pacific Northwest and California Author: Oregon State University. Forest Research Laboratory, Hann, David W. Summaries from 49 published articles on site-index and dominant-heightgrowth curves and equations are presented for 20 tree species or species groups found in California, Oregon, Washington, British Columbia, southeastern Alaska, Idaho, and western Montana. The summaries are organized by species. Each summary describes the modeling approach, type of curves/ equations, base age, and type of age presented in the article. In addition, the geographic location, number of trees or plots, range in age, and range in site index used to develop the curves/equations are also described. Close

• 4. [Article] Equations for predicting the height to crown base of six tree species in the central western Willamette Valley of Oregon

  This paper presents equations developed to predict the height to live crown base of six species in the central western Willamette Valley of Oregon. Weighted nonlinear regression was used to fit a separate ...

  Citation × Citation Citation Abstract Copy Title: Equations for predicting the height to crown base of six tree species in the central western Willamette Valley of Oregon Author: Zumrawi, Abdel Azim M. A., Oregon State University. Forest Research Laboratory, Hann, David W. This paper presents equations developed to predict the height to live crown base of six species in the central western Willamette Valley of Oregon. Weighted nonlinear regression was used to fit a separate logistic equation for each species. The predictor variables are total tree height, crown competition factor in trees with larger diameter at breast height than the subject tree, stand basal area, and diameter-height ratio. The equations will be used in two ways: 1) to estimate crown ratio on trees for which that measurement is missing, and 2) to simulate crown change in a single-tree/distance-independent growth and yield model. Application of these equations will be most reliable in stands that are free from thinning effect. Title: Equations for predicting the height to crown base of six tree species in the central western Willamette Valley of Oregon Author: Zumrawi, Abdel Azim M. A., Oregon State University. Forest Research Laboratory, Hann, David W. This paper presents equations developed to predict the height to live crown base of six species in the central western Willamette Valley of Oregon. Weighted nonlinear regression was used to fit a separate logistic equation for each species. The predictor variables are total tree height, crown competition factor in trees with larger diameter at breast height than the subject tree, stand basal area, and diameter-height ratio. The equations will be used in two ways: 1) to estimate crown ratio on trees for which that measurement is missing, and 2) to simulate crown change in a single-tree/distance-independent growth and yield model. Application of these equations will be most reliable in stands that are free from thinning effect. Close