scholarly journals Trends and Prospects in Ontario's Poplar Plantation Management

1977 ◽  
Vol 53 (4) ◽  
pp. 195-200 ◽  
Author(s):  
L. Zsuffa ◽  
H. W. Anderson ◽  
P. Jaciw
Keyword(s):  
Forest Type ◽  
Clonal Selection ◽  
Hybrid Poplar ◽  
Poplar Plantation ◽  
Plantation Management ◽  
Rotation System ◽  
Stem Quality ◽  
Stock Type ◽  
Poplar Plantations ◽  
Intensively Managed

The hybrid poplar plantation management systems and objectives, some of the problems, and the results of work to date are summarized.Short-rotation poplar plantations are of regularly spaced traditional-size trees, intensively managed in monoculture. Silvicultural problems are associated with clonal selection, site selection and treatment, spacing, and planting stock type. The mean annual increments of best varieties have reached at 12 years of age 29 m3/ha (400 cu. ft./acre).Forest type poplar plantations are established in logged forest areas. These are less intensively managed.Fast growing poplar and associated shade tolerant hardwoods and conifers are planted in mixed plantations (poplar polyculture) on highly variable sites. Beneficial influences are apparent on the stem quality and phenology of associated trees. Growth stimulating effects, increased site utilization and disease resistance are expected.In mini-rotation system, average dry yields of 8 t/ha/a (3.5 tons/acre/yr) or more are produced in closely-spaced, intensively-managed 1- to 3-year-old coppice plantations. Pulping tests indicate satisfactory qualities. In addition, many other uses, from petrochemical replacement to food, have potential. The management problems under study are: clonal selection, site treatments, spacing, and mechanization.

Public perceptions of hybrid poplar plantations: trees as an alternative crop

2007 ◽  
Vol 9 (5) ◽  
pp. 468 ◽  
Author(s):  
Pamela D. Neumann ◽  
Naomi T. Krogman ◽  
Barb R. Thomas
Keyword(s):  
Hybrid Poplar ◽  
Public Perceptions ◽  
Alternative Crop ◽  
Poplar Plantations

scholarly journals Analysis of commercial profitability of poplar plantations aged 24 years

2008 ◽  
pp. 171-185 ◽  
Author(s):  
Ljiljana Keca ◽  
Nenad Rankovic ◽  
Sanja Pajic
Keyword(s):  
Practical Implementation ◽  
Poplar Plantation ◽  
Modern Methods ◽  
Poplar Plantations

The commercial profitability of poplar cultivation was analysed in an artificial poplar plantation, rotation 25 years. The aim of the study was to check the justification of the invested financial means in artificial poplar plantations, based on the analysis of costs and receipts in the period of 25 years, by using the method of analysis of commercial profitability. The evaluation of investments was performed by modern methods which, in this way, found their practical implementation in forestry.

Carbon, Water, and Energy Exchanges of a Hybrid Poplar Plantation During the First Five Years Following Planting

Ecosystems ◽  
2011 ◽  
Vol 14 (4) ◽  
pp. 658-671 ◽  
Author(s):  
Tiebo Cai ◽  
David T. Price ◽  
Alberto L. Orchansky ◽  
Barb R. Thomas
Keyword(s):  
Hybrid Poplar ◽  
Poplar Plantation ◽  
Energy Exchanges

Within-Patch Structures Influence Small Mammal Abundance in Managed Forests of Northern California, USA

2019 ◽  
Vol 65 (6) ◽  
pp. 796-804 ◽  
Author(s):  
Steven M Gray ◽  
Gary J Roloff ◽  
Andrew J Dennhardt ◽  
Brian P Dotters ◽  
Thomas T Engstrom
Keyword(s):  
Small Mammal ◽  
Forest Type ◽  
Ground Cover ◽  
Ground Squirrels ◽  
Northern California ◽  
Managed Forests ◽  
Forest Types ◽  
Forest Patches ◽  
Downed Wood ◽  
Intensively Managed

Abstract We evaluated how forest type, vegetation structure in trapping webs, and proximate forest types influenced localized (~6.35 hectares) abundances for commonly captured small mammals in northern California, USA. We trapped from May to August of 2011–13 in 69 forest patches that represented: (1) clearcuts (3–5 years postharvest), (2) 10–20 year-old conifer plantations, (3) rotation-aged conifer stands, and (4) Watercourse and Lake Protection Zones. We captured 11 species; four in sufficient numbers for regression modeling. Our average abundance estimates for the study were 4.57 (standard error [SE] = 0.43), 0.32 (SE = 0.11), 0.90 (SE = 0.30), and 0.25 (SE = 0.09) individuals per web location (~0.75 hectares) for Peromyscus spp., Neotoma spp., California ground squirrels, and Allen’s chipmunks. We found that web-level ground cover (shrubs and grass), downed wood, and types of forests containing our trapping webs best described small mammal abundances, whereas proximate forest types were not important. Our results indicated that retaining localized structures in the form of understory shrub cover and downed wood positively influences small mammal abundance in intensively managed forests of northern California.

scholarly journals Hybrid Poplar Genotype Affects Attack Incidence by the Poplar-and-Willow Borer (Cryptorhynchus lapathi)

2003 ◽  
Vol 18 (4) ◽  
pp. 276-280 ◽  
Author(s):  
J.D. Johnson ◽  
K.R. Johnson
Keyword(s):  
Pacific Northwest ◽  
Arid Regions ◽  
Growth Parameters ◽  
Wood Quality ◽  
Hybrid Poplar ◽  
Stem Volume ◽  
Growth Data ◽  
Cascade Mountains ◽  
Poplar Plantations ◽  
Lombardy Poplar

Abstract Increasing incidence of the poplar-and-willow borer (Cryptorhynchus lapathi) in Pacific Northwest hybrid poplar plantations has resulted in reduced wood quality and stem breakage. Three replicated, 5-yr-old clone trials established in the vicinity of Pullman, WA were rated for host attack preference. Attacks by C. lapathi were found to be significant for plantation, clone, and the clone by plantation interaction. Attack rating among clones was affected by genotype. Those clones possessing P. nigra parentage, including Lombardy poplar, OP-367, and PC-6, showed significantly lower attacks across all plantations. Within the P. trichocarpa × P. deltoides (TD) hybrids, both 58-280 and 50-194 consistently exhibited lower attacks compared to the remaining four TD hybrids. Plantation, clone, and the plantation by clone interaction affected tree growth parameters significantly. Mean clone stem volume across sites from largest to smallest was: 49-177, OP-367, 50-197, 52-225, PC-6, 50-194, 58-280, 15-29, and Lombardy poplar. Attempts to correlate attack rating with any parameter of tree size were unsuccessful. Combining growth data and attack rating, OP-367 would be recommended for planting in arid regions east of the Cascade Mountains, followed by PC-6, 50-194 and 58-280. Future hybrid poplar breeding for this region should consider P. nigra as a parent. West. J. Appl. For. 18(4):276–280.

Sign in / Sign up

Export Citation Format

Share Document