The influence of soil conditions, with focus on soil acidity, on the establishment of poplar (Populus spp.)

Hjelm, Karin; Rytter, Lars

doi:10.1007/s11056-016-9541-9

Cited by 27 publications

(21 citation statements)

References 28 publications

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“…This may reflect a biocycling strategy that aims at preventing further soil acidification, as acidification is an important precursor of many other pedogenic processes negatively affecting soil fertility and hybrid poplar growth (e.g. inhibition of bacterial nitrification, P availability reduction and increased availability of toxicants such as Al) [24,74]. Higher Ca concentrations in leaf litter vs. green foliage have also been reported in other early successional species that often colonise nutrient-limited habitats (Pinus sylvestris, Pinus concorta, P. tremuloides and Betula pendula) [60].…”

Section: Discussionmentioning

confidence: 99%

“…Populus balsamifera, P. maximowiczii, Populus trichocarpa) are more widely distributed along temperate, boreal and Taïga riparian ecotones [22]. Further, variations in green foliage and leaf litter nutrient concentrations for a given clone are expected between poplar plantations growing on sites of contrasted fertility and acidity, given the high sensitivity of these leaf traits to fertilisation, liming and general site quality [23][24][25]. In a study of four sites with identical 6-year-old hybrid poplar plantations, the highest N, P, K, Ca and Mg concentrations in green foliage were observed on the site where the availability of each of these macronutrients was the highest in the soil [26].…”

Section: Introductionmentioning

confidence: 99%

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Linking Biomass Productivity to Genotype-Specific Nutrient Cycling Strategies in Mature Hybrid Poplars Planted Along an Environmental Gradient

2017

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This study used three hybrid poplar (Populus × spp.) clones (13 years old) with different parentages planted in three abandoned farmland sites along a regional gradient of elevation and soil fertility in southern Québec (Canada). We evaluated the effects of plantation site and clone on nutrient concentrations in green foliage and leaf litter, on leaf litter mass remaining, on soil properties and on biomass yield. Green foliage and leaf litter nutrient concentrations, and litter decomposition, are under strong genetic and environmental control in hybrid poplars. Clone-specific correlation patterns between green foliage and leaf litter nutrient concentrations were observed, as well as between soil nutrient availability and foliage or leaf litter nutrient concentrations. Despite the wide variations in soil nutrient availability and elevation between sites, only the clone effect was significant on biomass yield. An increase in N and P resorption proficiency with declining soil NO 3 and P availability, observed in all clones, could explain stable yields of each clone across sites. The most productive clones (DN × M-915508 and M × B-915311) were more proficient at resorbing N, P and K, while the least productive clone (D × N-131) had the highest N, P and K concentrations in green foliage and in litter. The ability of clone M × B-915311 to maintain high litter Ca and Mg concentrations on sites with soil characterised by lower pH, lower base saturation and lower nutrient availability (NO 3 , P, Ca and Mg) may also be linked to its high and stable productivity. Differences in litter quality between clones did not yield significant differences in soil properties or in litter mass remaining after 2 years. However, short-term decay trajectories varied between clones. As litter mass remaining was strongly correlated to elevation, the plantation site significantly affected leaf litter mass remaining, which ranged from 4.5 to 35.5% between sites after 2 years.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Linking Biomass Productivity to Genotype-Specific Nutrient Cycling Strategies in Mature Hybrid Poplars Planted Along an Environmental Gradient

2017

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“…The soil acidity for these two sites did not seem to have any obvious impact on hybrid aspen, at least not so far, since survival and growth performance was similar to the other neighboring sites on forest land. Hjelm and Rytter (2016) showed that soil acidity had a significant effect on the development of poplar plants. Thus, height and biomass increased with increasing pH.…”

Section: Phenotypic Data -Survival Growth Phenologymentioning

confidence: 99%

Early growth and phenology of hybrid aspen and poplar in clonal field tests in Scandinavia

Stener¹,

Westin²

2017

Silva Fenn.

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Highlights• Growth and survival was in general higher for hybrid aspen than for poplar.• The poor performance of poplar was likely due to poor climatic adaptation or to high soil acidity.• The genetic results indicate good possibilities for effective clonal selection.• The results support current recommendations for utilization of selected hybrid aspen and poplar regeneration material in Sweden. AbstractResults on early survival, growth and shoot phenology of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) and poplar clones (P. trichocarpa Torr. & A. Gray, P. balsamifera L., P. maximowiczii A. Henry and their hybrids) in 13 Scandinavian field trials are presented. The trials were established on forest land (7 sites) or former agricultural land (6 sites) within the latitude range of 56° to 65° N and were assessed 3-4 years after establishment. The main aim was to evaluate phenotypic and genetic differences related to early survival, growth and phenology for hybrid aspen and poplar for different site types and latitudes. Growth and survival was generally higher for hybrid aspen than poplar at all sites. The poor performance of poplar compared to hybrid aspen is likely due to climatic maladaptation or high soil acidity. The early growth performance of the species need to be confirmed at a higher age. The genetic variation and genetic control for growth, phenology and survival was in general intermediate to large indicating good possibilities for effective clonal selection. The genetic site x site correlations (r GE ) for growth were for hybrid aspen mostly strong, indicating a weak genotype by environment interaction, while r GE were inconsistent for poplars.The result suggests that southern Sweden can be treated as a single test and utilization zone and in northern Sweden the region along the coast may be another zone. It is too early to make any corresponding conclusions for poplar. In addition, the result backs up the current recommendations for utilization of selected hybrid aspen and poplar regeneration material in Sweden.

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“…In hybrid poplar, greenhouse studies have shown changes in the root to shoot allometry in response to soil nitrogen (N) availability and to soil pH variations, with proportionally greater biomass being allocated to the shoot under high N availability and at higher soil pH [31,32]. Similarly, at equivalent DBH, less coarse root biomass was observed in 13-year old hybrid poplars growing on high fertility sites than on moderate fertility sites [12].…”

Section: Introductionmentioning

confidence: 99%

“…Based on previous studies that have reported plastic allometry for various biomass compartments across plantation environments or resource gradients [12,13,32,34,42], we hypothesize that site-specific equations will be more accurate for predicting biomass of all compartments and stem volume. A secondary objective of this study was to evaluate the effect of plantation site and tree size (DBH) on stem basic density, on stem water content, and on the proportion of aboveground woody biomass consisting of branch biomass.…”

Section: Introductionmentioning

confidence: 99%

Allometric Equations for Estimating Compartment Biomass and Stem Volume in Mature Hybrid Poplars: General or Site-Specific?

Fortier¹,

Truax²,

Gagnon³

2017

Forests

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Abstract:We evaluated the extent to which general or site-specific allometric equations, using diameter at breast height (DBH) as a predictor, are more accurate for estimating stem volume, stem biomass, branch biomass, aboveground woody biomass, and coarse root biomass in 14 year-old plantations of Populus canadensis × Populus maximowiczii (clone DN × M-915508) located along an environmental gradient in southern Québec (eastern Canada). The effect of tree size and site on stem wood basic density, moisture content, and proportion of branch biomass was also evaluated. For stem volume, stem biomass, and aboveground biomass, site-specific and general models had comparable fit and accuracy, but lower Akaike's Information Criterion (AICc) values were observed for the general models. For the branch and coarse root biomass, higher fit and accuracy and lower AICc values were observed for the site-specific models. Allometric trajectory changes (plastic allometry) across sites were mainly observed for coarse root biomass, branch biomass, and stem volume. On the low fertility site, allocation was increased to coarse roots and decreased to stem volume. Site-specific tradeoffs between tree architecture and stem wood density explained the relatively invariant allometry for the whole aboveground woody biomass across the plantation sites. On the high fertility sites, basic wood density was the lowest and declined as tree DBH increased. At all sites, stem wood moisture content and the proportion of branch biomass increased with DBH. Overall, this study showed that biomass allometry, tree architecture, and biomass quality are a function of both tree size and plantation environment in hybrid poplar. Allometric model selection (site-specific or general) should depend on the objective pursued (evaluation of yield, nutrient budget, carbon stocks).

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The influence of soil conditions, with focus on soil acidity, on the establishment of poplar (Populus spp.)

Cited by 27 publications

References 28 publications

Linking Biomass Productivity to Genotype-Specific Nutrient Cycling Strategies in Mature Hybrid Poplars Planted Along an Environmental Gradient

Linking Biomass Productivity to Genotype-Specific Nutrient Cycling Strategies in Mature Hybrid Poplars Planted Along an Environmental Gradient

Early growth and phenology of hybrid aspen and poplar in clonal field tests in Scandinavia

Allometric Equations for Estimating Compartment Biomass and Stem Volume in Mature Hybrid Poplars: General or Site-Specific?

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