Effets de la densité de plantation sur la croissance et la qualité des bois dans un dispositif d’espacement de Populus xiaohei

Jiang, Zehui; Wang, Xiaoqing; Fei, Benhua; Ren, Haiqing; Liu, Xinge

doi:10.1051/forest:2007063

Cited by 36 publications

(17 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the effect of planting density on some Persian maple stem features was quantified and tested. Previous studies have been reported on the variation of tree growth features, stand production, and wood characteristics under different iForest 9: 325-329 327 management strategies (Zobel & Van Buijtenen 1989, Jiang et al 2007, Naji et al 2014. We found that high PD had a more pronounced effect on tree growth rather than on wood properties.…”

Section: Discussioncontrasting

confidence: 38%

Effect of intensive planting density on tree growth, wood density and fiber properties of maple (Acer velutinum Boiss.)

Naji¹,

Nia²,

Kiaei³

et al. 2016

iForest

View full text Add to dashboard Cite

Planting density is a major factor in determining tree growth and wood quality. Although the effect of low planting density on the variation of tree and wood characteristics has been already reported, the effect of intensive initial densities in plantations has not been fully assessed yet. In this study, the effect of intensive planting densities on tree growth, wood density and fiber cell properties was investigated in the context of the development of densely-stocked maple plantations for wood production. The study was carried out in a 12-year-old Acer velutinum trial plantation in northern Iran, with initial densities of 10000, 4444, and 2500 trees ha -1 planted. The variation of diameter at breast height, annual ring width, stem taper, wood density, and fiber cell properties were examined. As expected, low planting densities showed trees with larger diameter at breast height and annual ring width. The largest trees at higher densities were smaller than those in lower planting densities. However, initial planting density had no significant effect on stem taper, wood density and fiber cell properties. In addition, no significant relationships between tree growth features and wood properties were detected, indicating similar wood properties at all planting densities. Therefore, stand/tree growth attributes under intensive planting densities could not be considered as reliable predictors of the wood properties.

show abstract

Section: Discussioncontrasting

confidence: 38%

Effect of intensive planting density on tree growth, wood density and fiber properties of maple (Acer velutinum Boiss.)

Naji¹,

Nia²,

Kiaei³

et al. 2016

iForest

View full text Add to dashboard Cite

show abstract

“…The lower response of P. cembroides to drought suggested that it was more water efficient than P. engelmannii and better adapted to withstand prolonged water deficit. Additional factors such as stand density [22], neighborhood tree composition [23], and management history including thinning [23] could also affect our results. Management could partially explain some of the findings observed at the xeric habitat, which is managed with the selection system [28], whilst thinning seems to not be relevant in the protected mesic habitat.…”

Section: Discussionmentioning

confidence: 84%

“…Along with these gradients, radial growth (usually measured as changes in tree-ring width) varies in response to changes in water deficiency [5,18], site conditions [19], and tree characteristics (e.g., tree size, age, dominance, or vigor) [20,21]. Stand density [22], neighborhood composition [23], and past management history including thinning regimes [24] may also affect trees' responses to drought.…”

Section: Introductionmentioning

confidence: 99%

Drought Influence over Radial Growth of Mexican Conifers Inhabiting Mesic and Xeric Sites

Pompa-García

González-Cásares

Acosta-Hernández

et al. 2017

Forests

View full text Add to dashboard Cite

Drought is a major constraint of forest productivity and tree growth across diverse habitat types. In this study, we investigated the drought responses of four conifer species growing within two locations of differing elevation and climatic conditions in northern Mexico. Two species were selected at a mesic site (Cupressus lusitanica Mill., Abies durangensis Martínez) and the other two species were sampled at a xeric site (Pinus engelmannii Carr., Pinus cembroides Zucc.). Using a dendrochronological approach, we correlated the radial-growth series of each species and the climatic variables. All study species positively responded to wet-cool conditions during winter and spring. Despite the close proximity of species at a mesic site, A. durangensis had high responsiveness to hydroclimatic variability, but C. lusitanica was not responsive. At the xeric site, P. engelmannii and P. cembroides were very responsive to drought severity, differentiated only by the longer time scale of the response to accumulated drought of P. engelmannii. The responsiveness to hydroclimate and drought of these tree species seems to be modulated by site conditions, or by the functional features of each species that are still little explored. These findings indicate that differentiating between mesic and xeric habitats is a too coarse approach in diverse forests with a high topographic heterogeneity.

show abstract

“…However, there have been no practical examples reported. The frequency of discolored wood and stem number has been studied on Populus xiaohei by Jiang et al [35]. In their studies, the proportion of wetwood at DBH increased from 60% to 68.1% in stands with 1000 and 250 stems ha −1 respectively.…”

Section: Characteristics Of the Distribution Of False Heartwood In Stemsmentioning

confidence: 99%

Frequency of False Heartwood of Stems of Poplar Growing on Farmland in Sweden

Johansson

Hjelm

2013

Forests

View full text Add to dashboard Cite

Swedish owners of poplar stands are interested in both the wood quality and the use of poplars that are soon to be harvested. An important concern is the frequency of false heartwood (FHW) in the stems. We have presented an overview of the factors causing discolored wood as well as the industrial use and quality of the end products. We have studied poplar stems growing at 22 sites in Sweden between latitudes 55° N and 60° N. The mean age of the poplar was 23 years (range 14-41), the mean stand density 1011 stems ha −1 (range 155-3493) and the diameter at breast height (DBH) (over bark) 246 mm (range 121-447). All stands were growing on clay soils (light and medium clay and light clay tills). All of the sampled stems (42) contained false heartwood. At 0%-50% of stem height, all sampled trees were discolored and at 90% of stem height, 33% were discolored. The percentage of false heartwood area by stem area was highest at 1% and 10% of stem height (26.6% and 24.7% respectively). The "FHW" part of the stem had a radius of 47 mm (range 9-93) at 30% of stem height, which corresponds to 50% of the total stem radius. A log of six meters represents about 30% of stem height. Equations describing the correlation between DBH and the diameter of FHW at different stem heights (1%, 10%, 30%, 50%, 70% and 90%) and table describing FHW volume % by total stem volume at the first 50% of stem height were constructed. These might be helpful for estimating the percentage of fresh wood in a stem. However, most of the fast-growing poplars will be harvested as biofuel.

show abstract

Effets de la densité de plantation sur la croissance et la qualité des bois dans un dispositif d’espacement de Populus xiaohei

Cited by 36 publications

References 21 publications

Effect of intensive planting density on tree growth, wood density and fiber properties of maple (Acer velutinum Boiss.)

Effect of intensive planting density on tree growth, wood density and fiber properties of maple (Acer velutinum Boiss.)

Drought Influence over Radial Growth of Mexican Conifers Inhabiting Mesic and Xeric Sites

Frequency of False Heartwood of Stems of Poplar Growing on Farmland in Sweden

Contact Info

Product

Resources

About