Rapid biomass estimation using optical stem density of willow (Salix spp.) grown in short rotation

Ens, J.; Farrell, Richard E.; Bélanger, Nicolas

doi:10.1016/j.biombioe.2008.05.012

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…Stems from the trees originating within each plot were harvested and weighed in the field. A 1-2 kg random subsample, incorporating whole stems, was dried and reweighed to convert fresh weight to dry weight for each plot [24,25]. Stems were weighed and collected at only seven of the nine sites as two sites had previously been coppiced in the spring.…”

Section: Experimental Designmentioning

confidence: 99%

“…Site names, locations, history, soil texture, soil pH, precipitation and harvested biomass summary data for nine S. purpurea "Hotel" plantations included in this study. § From Ens et al [24] and Ens [25]; ¶ Unable to find ideal optimal match to previous land use; used surrounding forest; # Coppiced after first year; three years of aboveground biomass; † † Harvested previously such that comparable data is unavailable.…”

Section: Experimental Designmentioning

confidence: 99%

“…Potassium, Ca, and Mg were determined by atomic emission (K) and absorption (Ca, Mg) spectroscopy. Nutrient removal rates were calculated from the mass of harvested stems [24,25] and their concentrations of N, P, K, Ca, and Mg. Nutrient removal rates in biomass were compared to changes in soil nutrient pools.…”

Section: Laboratory Analysesmentioning

confidence: 99%

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Early Effects of Afforestation with Willow (Salix purpurea, “Hotel”) on Soil Carbon and Nutrient Availability

Ens

Farrell

Bélanger

2013

Forests

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Willow (Salix spp.) is currently being researched as a source of biomass energy in Canada. However, it is not certain whether afforestation with willow plantations will enhance or diminish soil C storage and nutrient availability. Trees are known to have pronounced effects on biologically mediated nutrient cycling processes which can increase nutrient availability, but willows are known to be nutrient demanding. In this paper, the net effect of plantation establishment is examined at nine sites across the prairie and southern Ontario regions of Canada. Carbon, N, P, K, Ca and Mg levels in soils and harvestable biomass were compared between willow plantations and paired reference sites at the end of the first three-year rotation. Soils were depleted in total C (−2.22 mg·g −1 , p < 0.05), inorganic N (−3.12 μg·N·g −1 , p < 0.10), exchangeable K (−0.11 cmol c ·kg −1 , p < 0.10) and leachable P (−0.03 mg·g −1 , p < 0.10). Exchangeable Ca was found to be consistently depleted only at the 20-40 depth. Depletion of soil K was more heavily influenced by disturbance, whereas soil N was directly affected by willow N uptake. Sites with greater growth and biocycling stabilized soil P concentrations.

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Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

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Early Effects of Afforestation with Willow (Salix purpurea, “Hotel”) on Soil Carbon and Nutrient Availability

Ens

Farrell

Bélanger

2013

Forests

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“…Willows can be used as fast-growing and high-yielding energy crops that perform well on marginal lands. In Canada, hundreds of thousands of hectares of marginal lands are available for short-rotation woody crops [3,4], including willows which have been shown to be among the most productive crops, reaching as much as 20 Mg·ha −1 yr −1 of aboveground dry biomass under optimal conditions [5,6]. In this context, SRICs of willows could partly replace the use of fossil fuel for heat production.…”

Section: Introductionmentioning

confidence: 99%

Organic Carbon Accumulation in Topsoil Following Afforestation with Willow: Emphasis on Leaf Litter Decomposition and Soil Organic Matter Quality

Lafleur

Labrecque

Arnold

et al. 2015

Forests

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Short-rotation intensive cultures (SRICs) of willows can potentially sequester carbon (C) in soil. However, there is limited information regarding the factors governing soil organic C (Corg) accumulation following afforestation. The objectives of this study were to: (i) determine whether willow leads to Corg accumulation in the topsoil (0-10 cm) two to six years after establishment in five SRICs located along a large climatic/productivity gradient in southern Quebec, and (ii) assess the influence of leaf litter decomposition and soil organic matter (OM) quality on Corg accumulation in the topsoil. Topsoil Corg concentrations and pools under SRICs were, on average, 25% greater than reference fields, and alkyls concentrations were higher under SRICs. On an annualized basis, Corg accumulation rates in the topsoil varied between 0.4 and 4.5 Mg ha −1 yr −1 .Estimated annual litterfall C fluxes were in the same order of magnitude, suggesting that SRICs can accumulate Corg in the topsoil during early years due to high growth rates. Leaf litter decomposition was also related to Corg accumulation rates in the topsoil. It was positively correlated to growing season length, degree-days, and growing season average OPEN ACCESSForests 2015, 6 770 air and topsoil temperature (r > 0.70), and negatively correlated to topsoil volumetric water content (r = −0.55). Leaf litter decomposition likely occurred more quickly than that of plants in reference fields, and as it progressed, OM became more decay resistant, more stable and accumulated as Corg in the topsoil.

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Measuring Harvestable Biomass in Short-Rotation Willow Bioenergy Plantations Using Light Attenuation

Hangs

Stevenson²,

Schoenau

et al. 2012

Bioenerg. Res.

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Rapid biomass estimation using optical stem density of willow (Salix spp.) grown in short rotation

Cited by 10 publications

References 9 publications

Early Effects of Afforestation with Willow (Salix purpurea, “Hotel”) on Soil Carbon and Nutrient Availability

Early Effects of Afforestation with Willow (Salix purpurea, “Hotel”) on Soil Carbon and Nutrient Availability

Organic Carbon Accumulation in Topsoil Following Afforestation with Willow: Emphasis on Leaf Litter Decomposition and Soil Organic Matter Quality

Measuring Harvestable Biomass in Short-Rotation Willow Bioenergy Plantations Using Light Attenuation

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