scholarly journals Growth and Site Index of White Pine in Relation to Soils and Topography in the Glaciated Areas of Ohio

2007 ◽  
Vol 24 (2) ◽  
pp. 98-103 ◽  
Author(s):  
James H. Brown
Keyword(s):  
Clay Content ◽  
Site Index ◽  
Growth Increment ◽  
Height Growth ◽  
Soil Horizon ◽  
Slope Position ◽  
Regression Equations ◽  
Old Field ◽  
White Pine ◽  
Annual Increment

Abstract Multiple regression equations were developed using topographic and soil factors for predicting growth and site index of white pine growing on old-field sites in the Wisconsin-aged glaciated areas of northern and western Ohio. Correlations between height growth of trees below the breast high (bh) annual growth increment and bh and above were not statistically significant and growth and site index estimates were made using age at bh and growth from the bh annual increment to the growing tip. The best estimates of heights and site index were obtained when data were subdivided into two groups. For plots having 0–10% slopes, two regression equations were developed for predicting height growth: one containing slope shape and depth to soil mottling and the other adding percent clay in the B2 soil horizon to the equation. Those equations accounted for 67 and 73%, respectively, of the variation in heights of trees and 35-year site index ranged from 62 to 82 ft, with the best growth on convex-shaped slopes having the greatest depth to mottling and the lowest clay content. For sites having slopes greater than 10%, one equation was developed containing slope position and slope percent as variables. That equation accounted for 72% of the variation in heights of trees, and site index ranged from 71 to 81 ft, with the best growth on plots at the bottom of slopes having the lowest slope percent.

Site Index of Red Pine in Relation to Soils and Topography in the Allegheny Plateau of Ohio

1990 ◽  
Vol 7 (3) ◽  
pp. 129-133
Author(s):  
James H. Brown ◽  
Charles A. Duncan
Keyword(s):  
Clay Content ◽  
Site Index ◽  
Height Growth ◽  
Red Pine ◽  
Tree Age ◽  
Soil Horizon ◽  
Slope Position ◽  
Regression Equations ◽  
Old Field ◽  
Allegheny Plateau

Abstract Multiple regression equations using topographic and soil factors were developed for predicting height growth and site index for red pine planted on old-field sites in the unglaciated Western and Central Allegheny Plateau Regions of Ohio. Regression equations containing slope position and aspect combined with tree age accounted for 58% of the variation in heights of trees. Height growth increased with A soil horizon thickness, and adding that variable to equations increased the variation explained to 61%; conversely, growth decreased as clay content of the B soil horizon increased and adding that factor further increased the variation accounted for to 66%. North. J. Appl. For. 7:129-133, September 1990.

scholarly journals Growth Intercept Methods for Predicting Site Index in White Pine Plantations in the Glaciated Areas of Ohio

2006 ◽  
Vol 23 (3) ◽  
pp. 176-183 ◽  
Author(s):  
James H. Brown
Keyword(s):  
Site Index ◽  
Growth Increment ◽  
Annual Growth ◽  
Site Quality ◽  
Soil Horizon ◽  
Regression Equations ◽  
White Pine ◽  
Annual Increment ◽  
Growth Intercept ◽  
Annual Growth Increment

Abstract Growth intercept (GI) techniques were evaluated for estimating site quality in white pine stands planted on old-field sites in the Wisconsin-aged glaciated areas of northern and western Ohio. Correlations between growth of trees below the breast high (bh) annual growth increment andheight growth from bh and above were not statistically significant. Site index estimates were made using age at bh and height from the bh annual growth increment to the growing tip. Three-year and 5-year growth beginning 3 years above the bh annual increment and 10-year growth beginning oneinternode above bh were significantly more correlated with height than were intercepts beginning at bh. In multiple regression equations developed for predicting site index, 3-, 5- and 10-year intercepts, along with age at bh, accounted for 76, 77, and 80%, respectively, of the variationin tree heights and 35-year site indices varied from 60 to 83 ft. Combining clay content of the B2 soil horizon with GI and age increased the variation accounted for by 3-, 5-, and 10-year GI equations to 79, 78, and 81%, respectively, and the improvement in site index estimatesover those using GIs alone was not more than ±2 ft within any given GI measurement.

Growth Intercept Methods for Predicting Site Index in Red Pine Plantations in the Allegheny Plateau of Ohio

1990 ◽  
Vol 7 (1) ◽  
pp. 27-30 ◽  
Author(s):  
James H. Brown ◽  
Charles A. Duncan
Keyword(s):  
Site Index ◽  
Height Growth ◽  
Red Pine ◽  
Site Quality ◽  
Soil Horizon ◽  
Old Field ◽  
Annual Increment ◽  
Breast Height ◽  
Allegheny Plateau ◽  
Growth Intercept

Abstract Growth intercept (GI) techniques were evaluated for estimating site quality in red pine stands planted on old-field sites in the unglaciated Western and Central Allegheny Plateau regions of Ohio. Correlations between height growth of trees below breast height (BH) and height growth above BH were not statistically significant. Site index estimates were made using age at BH and height from BH to the growing tip. Three-year and 5-year growth beginning three internodes above the BH annual increment and 10-year growth beginning one internode above BH were more significantly correlated with height than were intercepts beginning at BH. In equations developed for predicting site index, 3-, 5-, and 10-year intercepts in combination with age accounted for 64 to 80% of the variation in tree heights. Combining thickness of the A soil horizon with GI and age statistically increased the variation accounted for in the 3- and 5-year GI equations; however, for field use, the improvement in accuracy was not sufficient to justify making the additional soil measurement. North. J. Appl. For. 7(1):27-30, March 1990.

Site Index of Yellow-Poplar in Relation to Soils and Topography in the Allegheny Plateau of Ohio

1988 ◽  
Vol 5 (1) ◽  
pp. 34-38
Author(s):  
James H. Brown ◽  
Robert D. Marquard
Keyword(s):  
Soil Depth ◽  
Site Index ◽  
Tree Age ◽  
Soil Horizon ◽  
Slope Position ◽  
Regression Equations ◽  
Eastern United States ◽  
Old Field ◽  
Yellow Poplar ◽  
Allegheny Plateau

Abstract Yellow-poplar is an important component of forest stands in much of the central and eastern United States, and areas and volumes of the species have increased significantly in recent years. Multiple regression equations using soil and topographic factors were developed for predicting height growth and site index for yellow-poplar growing on old-field sites in the unglaciated Allegheny Plateau of Ohio. Equations containing only aspect, slope position, and tree age accounted for approximately 75% of the variation in heights of trees, while adding total soil depth and/or pH of the A soil horizon increased the variation accounted for to 80 to 83%. Thirty-five year site indices (based on age at breast height (bh) and height from bh to growing tip) varied from 56 to 80 ft. North. J. Appl. For. 5:34-38, March 1988

Predicting Site Index for Old-Field Loblolly Pine Plantations

1981 ◽  
Vol 5 (3) ◽  
pp. 109-114 ◽  
Author(s):  
Michael S. Golden ◽  
Ralph Meldahl ◽  
Steven A. Knowe ◽  
William D. Boyer
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Regression Models ◽  
Site Index ◽  
Height Growth ◽  
Growth Patterns ◽  
Clay Soils ◽  
Silty Clay ◽  
Old Field ◽  
Separate Table

Abstract Height-over-age curves and site-index prediction tables were derived using nonlinear polymorphic regression models with data from 25-year-old old-field plantations ranging from coastal North Carolina to southwestern Arkansas. Plots from heavy silty clay soils of the interior flatwoods of Mississippi exhibited height growth patterns noticeably different from the overall pattern. A separate table and set of curves were developed for such sites.

scholarly journals RELATIVE QUALITY OF THE MAJOR FOREST ASSOCIATIONS OF THE SOUTHERN B.C. INTERIOR FOR GROWTH OF LODGEPOLE PINE, ENGELMANN SPRUCE, DOUGLAS-FIR AND ALPINE FIR

1966 ◽  
Vol 42 (3) ◽  
pp. 306-313 ◽  
Author(s):  
Walter Stanek
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Site Index ◽  
Height Growth ◽  
Douglas Fir ◽  
Regression Equations ◽  
Common Occurrence ◽  
Engelmann Spruce ◽  
Relative Quality

Height growth of lodgepole pine, Engelmann spruce, Douglas-fir and alpine fir was investigated in the Douglas-fir and Engelmann Spruce-Alpine Fir Zones of the Interior of British Columbia. In the same forest association each species has a characteristic site index at the age of 100 years (SI/100). Regression equations were calculated for predicting SI/100 of several species in different associations. Regression equations were also developed for estimating SI/100 of Engelmann spruce, Douglas-fir and alpine fir from known SI/100 of lodgepole pine. The latter species was selected because of its common occurrence in the two zones. In addition regression equation was calculated for predicting SI/100 of lodgepole pine from known SI/100 of Engelmann spruce. All regression equations apply to naturally established stands in the study area.

Site Index Curves and Site Factors Affecting the Growth of White Pine in Southern Ontario

1990 ◽  
Vol 7 (4) ◽  
pp. 183-186
Author(s):  
Peter A. Williams ◽  
Andrew M. Gordon ◽  
Edward P. Taylor
Keyword(s):  
New England ◽  
Norway Spruce ◽  
Analysis Data ◽  
Site Index ◽  
Height Growth ◽  
White Pine ◽  
Site Factors ◽  
Southern Ontario ◽  
Factors Affecting ◽  
Breast Height

Abstract The objectives of this project were to develop site index curves and provide soil-site information for southern Ontario white pine and to compare that information to similar information on white pine from other regions and to information on Norway spruce in the study area. Sampling points were selected in unthinned white pine plantations and classified by sod textural class (course, medium, and free) and depth to distinct mottling (0-16, 16-40, and 40 + in.). Two sets of anamorphic site index curves were constructed from stem analysis data, using a total age of 30 years (SI30) and a breast height age of 25 years (SIBH25) as base ages. Significant differences due to soil factors were found in the number of years it took seedlings to reach breast height (BH) (mean = 6 5 years; range = 3 to 11 years) but not in SIBH25. Years to BH was significantly greater on clayey sites than those with loamy or sandy textures (6.1 vs. 5.0 and 4.9 years). White pine height growth in the study area compared favorably with white pine height growth in New England, Wisconsin, and Ohio. When white pine height growth was compared to the growth of Norway spruce in the study area, SIBH25 values were significantly higher for Norway spruce but years to BH were significantly lower for white pine. On poorly drained sites, site index values for white pine and Norway spruce were similar, but it took 2.2 years less for white pine to reach breast height (7.2 vs. 5.0 years). On imperfectly and well-drained sites, white pine seedlings took less time than Norway spruce to reach BH, but the site index of Norway spruce was much greater. North. J. Appl. For. 7:183-186, December 1990.

A Growth and Yield Model for Improved Eastern Cottonwood Plantations in the Lower Mississippi Delta

1991 ◽  
Vol 15 (4) ◽  
pp. 213-216 ◽  
Author(s):  
Quang V. Cao ◽  
Kenneth M. Durand
Keyword(s):  
Populus Deltoides ◽  
Mississippi Delta ◽  
Basal Area ◽  
Site Index ◽  
Growth And Yield ◽  
Annual Increment ◽  
Yield Model ◽  
Eastern Cottonwood ◽  
Volume Yield ◽  
Growth And Yield Model

Abstract A compatible growth and yield model was developed based on remeasurement data collected from 183 plots on unthinned improved eastern cottonwood (Populus deltoides Bartr.) plantations in the lower Mississippi Delta. The Sullivan and Clutter (1972) equation form was selected for predicting cubic-foot volume yield and projecting volume from site index and initial age and basal area. Yield equations explained 97% and 94%, respectively, of the variations in total outside bark and merchantable inside bark volumes. Mean annual increment of merchantable volume culminated between 8 and 15 years, depending on site index and initial basal area. South. J. Appl. For. 15(4):213-216.

DEVELOPMENT OF A WHITE PINE UNDERPLANTATION IN THINNED AND UNTHINNED ASPEN

1966 ◽  
Vol 42 (3) ◽  
pp. 244-250 ◽  
Author(s):  
John R. Clements
Keyword(s):  
High Mortality ◽  
Height Growth ◽  
White Pine ◽  
Poor Growth ◽  
Slow Growing ◽  
Growth Of Seedlings

In 1936, part of a dense 12-year-old aspen sucker stand was thinned. In the following year thinned and unthinned portions of the stand were underplanted with 2-2 white pine stock.By 1950, most seedlings were still small and slow-growing. Mortality among these individuals was high in the following 10 years but mortality was fairly light among seedlings of taller height classes. Height growth of seedlings continued to be poor so long as the crowns were below the shrub layer.White pine planted beneath young aspen stands require care at least until they are about 4 feet tall, especially on moist sites. The underbrush must be controlled, otherwise excessively high mortality and poor growth of the survivors will result.

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