Yellow-Poplar (Liriodendron spp.)

1991 ◽  
pp. 94-110 ◽  
Author(s):  
S. A. Merkle ◽  
H. E. Sommer
Keyword(s):  
Yellow Poplar

Color Changes, EMC and Biological Resistance of Thermally Modified Yellow Poplar

2018 ◽  
Vol 50 (4) ◽  
pp. 439-446 ◽  
Author(s):  
A. F. Brito ◽  
F. W. Calonego ◽  
B. H. Bond ◽  
E.T.D. Severo
Keyword(s):  
Yellow Poplar ◽  
Biological Resistance ◽  
Color Changes

scholarly journals Urbanization pressures alter tree rhizosphere microbiomes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Carl L. Rosier ◽  
Shawn W. Polson ◽  
Vincent D’Amico ◽  
Jinjun Kan ◽  
Tara L. E. Trammell
Keyword(s):  
Organic Matter ◽  
Relative Abundance ◽  
Tree Species ◽  
High Throughput Sequencing ◽  
Regional Climate ◽  
Keystone Species ◽  
Fagus Grandifolia ◽  
Yellow Poplar ◽  
Individual Tree ◽  
Structural Formation

AbstractThe soil microbial community (SMC) provides critical ecosystem services including organic matter decomposition, soil structural formation, and nutrient cycling. Studies suggest plants, specifically trees, act as soil keystone species controlling SMC structure via multiple mechanisms (e.g., litter chemistry, root exudates, and canopy alteration of precipitation). Tree influence on SMC is shaped by local/regional climate effects on forested environments and the connection of forests to surrounding landscapes (e.g., urbanization). Urban soils offer an ideal analog to assess the influence of environmental conditions versus plant species-specific controls on SMC. We used next generation high throughput sequencing to characterize the SMC of specific tree species (Fagus grandifolia [beech] vs Liriodendron tulipifera [yellow poplar]) across an urban–rural gradient. Results indicate SMC dissimilarity within rural forests suggests the SMC is unique to individual tree species. However, greater urbanization pressure increased SMC similarity between tree species. Relative abundance, species richness, and evenness suggest that increases in similarity within urban forests is not the result of biodiversity loss, but rather due to greater overlap of shared taxa. Evaluation of soil chemistry across the rural–urban gradient indicate pH, Ca+, and organic matter are largely responsible for driving relative abundance of specific SMC members.

Price Trends and Relationships for Red Oak and Yellow-Poplar Stumpage, Sawlogs, and Lumber in Ohio: 1975-1993

1995 ◽  
Vol 12 (4) ◽  
pp. 168-173 ◽  
Author(s):  
William G. Luppold ◽  
John E. Baumgras
Keyword(s):  
Forest Inventory ◽  
Large Impact ◽  
Red Oak ◽  
Yellow Poplar ◽  
Hardwood Lumber ◽  
International Demand ◽  
Price Trends ◽  
Abundant Supply

Abstract The rapidly changing domestic and international hardwood markets of the 1980s had a large impact on the demand and price of hardwood lumber, logs, and stumpage. In this paper we examine inflation adjusted (real)prices for red oak and yellow-poplar stumpage, logs, and lumber. We then relate the observed trends to changes in domestic lumber consumption, lumber and log exports, sawmill technology, and forest inventory trends. Increasing real prices for red oak stumpage, logs, and lumber are the result of expanding domestic and international demand coupled with relatively limited stumpage supplies. Yellow-poplar, a species in relatively abundant supply and lower demand, experienced a decline in real prices for logs and lumber. Gains in stumpage prices have exceeded those for both logs and lumber, indicating that stumpage prices have benefited from transferred efficiencies in harvesting and milling. Although this study focuses on stumpage and log prices in Ohio from 1975 to 1993, the results appear to be relevant to adjacent states. North. J. Appl. For. 12(4):168-173.

Selected Properties of Parallel Strand Lumber Made from Southern Pine and Yellow-Poplar

Holzforschung ◽  
2003 ◽  
Vol 57 (2) ◽  
pp. 207-212 ◽  
Author(s):  
Y. Liu ◽  
A.W.C. Lee
Keyword(s):  
Compressive Strength ◽  
Shear Strength ◽  
Specific Gravity ◽  
Moisture Content ◽  
Dimensional Stability ◽  
Modulus Of Rupture ◽  
Southern Pine ◽  
Yellow Poplar ◽  
Average Modulus ◽  
Parallel Strand Lumber

Summary This study was conducted to explore basic physical and mechanical properties of parallel strand lumber (PSL) made exclusively from southern pine and yellow-poplar, respectively, and to examine their relationships using statistical analysis. Small specimens were prepared from commercial southern pine PSL and yellow-poplar PSL billets and tested for specific gravity, moisture content, dimensional stability, bending properties, shear strength and compressive strength. Results indicate average specific gravity of southern pine PSL is higher than that of yellow-poplar PSL, while their average moisture content and dimensional stability are very similar. Southern pine PSL has higher average modulus of elasticity but lower average modulus of rupture than yellow-poplar PSL. While average longitudinal shear strength does not exhibit differences between southern pine PSL and yellow-poplar PSL, average compressive strength of southern pine PSL is higher than that of yellow-poplar PSL. There are positive correlations among modulus of elasticity, modulus of rupture and specific gravity. PSL improves some properties of solid wood from which PSL is made.

Fate and distribution of sulfur-35 in yellow poplar and red maple trees

Oecologia ◽  
1988 ◽  
Vol 76 (1) ◽  
pp. 43-50 ◽  
Author(s):  
C. T. Garten
Keyword(s):  
Red Maple ◽  
Yellow Poplar

scholarly journals Effect of Different Hydrothermal Treatments (Steam and Hot Compressed Water) on Physical Properties and Drying Behavior of Yellow-Poplar (Liriodendron tulipifera)

2019 ◽  
Vol 69 (1) ◽  
pp. 42-52
Author(s):  
Sohrab Rahimi ◽  
Kaushlendra Singh ◽  
David DeVallance
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Moisture Content ◽  
Yellow Poplar ◽  
Pressure Steam ◽  
Percent Moisture ◽  
Drying Behavior ◽  
Hot Compressed Water ◽  
And Control ◽  
Control Samples

Abstract Nonchemical high-pressure steam treatments have been intensively researched and commercialized to produce chemical-free wood products with enhanced properties. However, the utilization of high-pressure steam involves vapor-phase reactions using high-temperature steam generated at the expense of high energy input. In this research, influences of reaction media (steam and hot-compressed water) and temperature (100°C and 140°C) during thermal treatment on physical properties and drying behavior of yellow-poplar (Liriodendron tulipifera) heartwood were compared. The length, width, and thickness of the samples were 22.53 mm, 17.18 mm, and 16.72 mm, respectively. After the treatment, the samples were dried under an isothermal temperature condition of 105°C. Data on moisture content and time of drying from drying experiments were fitted with unsteady-state molecular transport equations to calculate overall liquid diffusion coefficients. Dimensions, weight, and true volume of samples were measured for green, thermally treated, and dried samples and the values were used to calculate selected physical characteristics. Additionally, selected mechanical properties were evaluated for samples conditioned to 13 percent moisture content. Results showed that intensified hot-compressed water-treated and control samples had the highest and lowest saturated moisture contents (101% and 44%), respectively, immediately after treatments. Intensified steam-treated and control samples had the highest and lowest total porosity (95% and 82%), respectively. Furthermore, mild hot-compressed water-treated samples showed the greatest compression strength (47.8 MPa) at 13 percent moisture content. Except for steam treatment at 140°C, other treatments significantly decreased the diffusion coefficient. Collectively, samples treated with hot-compressed water at 100°C showed the most improved mechanical properties.

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