scholarly journals Radial variation in sap velocity as a function of stem diameter and sapwood thickness in yellow-poplar trees

2000 ◽  
Vol 20 (8) ◽  
pp. 511-518 ◽  
Author(s):  
S. D. Wullschleger ◽  
A. W. King
Keyword(s):  
Radial Variation ◽  
Stem Diameter ◽  
Yellow Poplar ◽  
Poplar Trees

Dimension Lumber Grade and Yield Estimates for Yellow-Poplar

1984 ◽  
Vol 8 (3) ◽  
pp. 123-126
Author(s):  
Joseph Denig ◽  
Eugene M. Wengert ◽  
Robert Brisbin ◽  
James Schroeder
Keyword(s):  
Grading System ◽  
Southern Pine ◽  
Yellow Poplar ◽  
Poplar Trees ◽  
Dimension Lumber ◽  
Grade Yield ◽  
Lumber Grade

Abstract Equations that predict the dimension lumber grade yield from yellow-poplar trees (Liriodendron tulipfera L.) and sawlogs that are manufactured into 2 x 4's using the Saw-Dry-Rip system are presented. These equations require the measurement of dbh and merchantable height measured to an 8-in. top diameter. To predict the dimension lumber yield from yellow-poplar logs, a grading system that incorporates limiting defects with the clear-face concept used in southern pine log grading is utilized to stratify the logs. Once the logs have been graded, scaling diameter is used to predict the dimension lumber yield.

Productivity and compensatory responses of yellow-poplar trees in elevated C02

Nature ◽  
1992 ◽  
Vol 357 (6376) ◽  
pp. 322-324 ◽  
Author(s):  
Richard J. Norby ◽  
Carla A. Gunderson ◽  
Stan D. Wullschleger ◽  
E. G. O'Neill ◽  
Mary K. McCracken
Keyword(s):  
Yellow Poplar ◽  
Compensatory Responses ◽  
Poplar Trees

scholarly journals Radial Variation of Sound Absorption Capability in the Cross Sectional Surface of Yellow Poplar Wood

2011 ◽  
Vol 39 (4) ◽  
pp. 326-332 ◽  
Author(s):  
Chun-Won Kang ◽  
Youn-Hun Lee ◽  
Ho-Yang Kang ◽  
Wook Kang ◽  
Huiran Xu ◽  
...  
Keyword(s):  
Sound Absorption ◽  
Radial Variation ◽  
Poplar Wood ◽  
Yellow Poplar ◽  
Cross Sectional ◽  
The Cross ◽  
Sectional Surface

Influence of water stress on Verticillium wilt of yellow-poplar

1982 ◽  
Vol 60 (3) ◽  
pp. 201-209 ◽  
Author(s):  
A. L. Morehart ◽  
G. L. Melchior
Keyword(s):  
Soil Moisture ◽  
Acute Injury ◽  
Symptom Expression ◽  
Yellow Poplar ◽  
Host Trees ◽  
Poplar Trees ◽  
Influence Of Water ◽  
Dark Staining ◽  
Pathogen Colonization ◽  
Fungus Growth

The pathogenisis of Verticillium vascular disease was evaluated in root-inoculated yellow-poplar trees grown under favorable, periodically saturated and chronically low soil moisture levels. Verticillium was significantly more aggressive in host trees stressed by periods of low moisture than in host trees subjected to periods of flooding. At no time did inoculated, flooded trees exhibit typical Verticillium symptoms nor was pathogen reisolation obtained from the aboveground parts of these trees. In contrast, inoculated trees treated at favorable and low soil moisture levels incurred extensive pathogen colonization. Histological studies showed that the xylem vessels of petioles became occluded by fungus growth and a dark staining material at the time of first symptom expression. Additionally, macroscopic and microscopic observations of flooded trees indicated that acute injury occurred in the stem base and, under some conditions, the cortex in this region developed an aerenchyma induced by flooding.

Comparison of the Centroid Method and Taper Systems for Estimating Tree Volumes

1993 ◽  
Vol 10 (1) ◽  
pp. 8-9 ◽  
Author(s):  
David W. Patterson ◽  
Harry V. Wiant ◽  
Geoffrey B. Wood
Keyword(s):  
Red Pine ◽  
Red Oak ◽  
Northern Red Oak ◽  
Yellow Poplar ◽  
Centroid Method ◽  
Poplar Trees ◽  
Control Volumes

Abstract There is a need to be able to accurately determine the volumes of trees. Current methods include the use of volume tables or taper systems which should be tested for applicability before use in a given stand. This can be costly and time consuming. The objective of this study was tocompare the estimates made using accepted taper systems and the more "generic" centroid method and determine which gives the best results. Twenty trees each of northern red oak and red pine and 19 yellow-poplar trees were harvested. Diameter measurements were taken every 4 in. with calipersfor the first 40 ft of each stem. These measurements were used to calculate the "true" or control volumes. The appropriate taper system for each species and the centroid method were used to estimate the tree volumes, and these estimates were compared with the control volumes. The centroidmethod was less biased than taper systems for all three species. Precision was better for the centroid method than taper systems for yellow-poplar and red pine, but not for northern red oak. North. J. Appl. For. 10(1): 8-9.

Stem Volume and Taper Functions for Yellow-Poplar in the Southern Appalachians

1984 ◽  
Vol 8 (4) ◽  
pp. 185-188 ◽  
Author(s):  
Bruce R. Knoebel ◽  
Harold E. Burkhart ◽  
Donald E. Beck
Keyword(s):  
Estimating Equations ◽  
Stem Volume ◽  
Southern Appalachians ◽  
Height Ratio ◽  
Yellow Poplar ◽  
Stem Taper ◽  
Poplar Trees ◽  
Commercial Species

Abstract Yellow-poplar (Liriodendron tulipfera L.) is an important commercial species that is marketed as a variety of products. Because merchantability standards change rapidly, it is desirable to have a set of volume estimating equations that are general and flexible for obtaining estimates for any specified portion of tree boles. Data from 336 yellow-poplar trees in the southern Appalachians were used to develop equations for predicting cu.ft. stem volume to any desired top diameter or height limit while insuring that predicted volumes were logically related through the fitting of diameter and height ratio equations. Rearrangement of these ratio equations provides implicit stem taper functions that can be used to estimate height at a given diameter and diameter at a given height.

scholarly journals Log Grade Prediction for Standing Yellow-Poplar Trees in Eastern Kentucky

2003 ◽  
Vol 27 (1) ◽  
pp. 61-65
Author(s):  
G. Keith Hilpp ◽  
Matthew H. Pelkki
Keyword(s):  
Yellow Poplar ◽  
Usda Forest Service ◽  
Validation Data ◽  
Data Set ◽  
Eastern Kentucky ◽  
Grade Prediction ◽  
Resource Managers ◽  
Poplar Trees ◽  
Standing Trees ◽  
Modeling Data

Abstract Information on the quality of logs in standing trees can aid resource managers and landowners in maximizing returns from timber harvests. However, little is published about the grade of logs in yellow-poplar (Liriodendron tulipifera) stands. In this study, discriminant analysis was used to develop classification functions to predict USDA Forest Service Log Grades for standing yellow-poplar trees in eastern Kentucky. The variables used to predict log grade are those commonly collected during forest inventory. This analysis indicates the importance of log position, merchantable height, and tree grade to log grade determination. The classification functions developed from the modeling data set correctly classified 80.9% of the log grades in a validation data set. These results provide a framework to resource managers and landowners for assessing yellow-poplar log quality in standing trees. South. J. Appl. For. 27(1):61–65.

Above-ground biomass and nutrient distribution of released and fertilized yellow-poplar trees

1998 ◽  
Vol 105 (1-3) ◽  
pp. 231-240 ◽  
Author(s):  
James E Johnson ◽  
John J Bollig ◽  
Ronald A Rathfon
Keyword(s):  
Above Ground Biomass ◽  
Nutrient Distribution ◽  
Yellow Poplar ◽  
Ground Biomass ◽  
Poplar Trees
Sign in / Sign up

Export Citation Format

Share Document