Soil Carbon Modelling in Salix Biomass Plantations: Variety Determines Carbon Sequestration and Climate Impacts

Kalita, Saurav; Potter, Hanna Karlsson; Weih, Martin; Baum, Christel; Nordberg, Åke; Hansson, Per‐Anders

doi:10.3390/f12111529

Cited by 11 publications

(13 citation statements)

References 72 publications

(110 reference statements)

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“…The climate impact of six varieties of Salix grown under fertilized and unfertilized conditions (Table 1, subset of 2) was analyzed and compared using LCA methodology, using the data generated from a Salix field study at Pustnäs, Uppsala, Sweden (Table 1, subset of 2). The study system involved the steps from field site preparation to end use of the Salix biomass as biofuel for an incineration plant, with heat energy as the end product, described in Kalita et al (2021). The system did not include the distribution of heat and transportation of ash.…”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

“…Soil organic carbon stocks under the different Salix plantations in the 0–20 cm soil layer after 50 years as calculated using ICBM soil carbon model (modified from Kalita et al, 2021). …”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

“…This indicates that cultivation of selected Salix varieties under the given set of conditions in central Sweden for bioenergy production to substitute fossil energy would have a cooling effect on the climate, and thus a potential to mitigate climate change. The climate impacts of the different Salix biomass‐to‐bioenergy systems after 50 years under the system conditions including substitution effects of the reference scenario are shown in Figure 4 with two functional units; namely, 1 ha of land and one MJ of heat (Kalita et al, 2021). Even when looking at the Salix systems alone, that is, without substitution effects, all except fertilized Björn lead to negative emissions over the lifecycle under the given system conditions.…”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

“…Climate impacts of Salix (SRC) systems after 50 years including substitution effects. The climate impacts are given in terms of GWP100 and Δ T s per hectare of land and per MJ of heat (modified from Kalita et al, 2021). …”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

“…The results from Kalita et al's (2021) study show that Salix genotype influences the biomass yield, response to fertilization, SOC sequestration rate, and ultimately the climate impact. It is important to account for these genotype effects in systems studies and environmental impact assessments.…”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

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Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

et al. 2022

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Bioenergy will be one of the most important renewable energy sources in the conversion from fossil fuels to bio-based products. Short rotation coppice Salix could be a key player in this conversion since Salix has rapid growth, positive energy balance, easy to manage cultivation system with vegetative propagation of plant material and multiple harvests from the same plantation. The aim of the present paper is to provide an overview of the main challenges and key issues in willow genetic improvement toward sustainable biofuel value chains. Primarily based on results from the research project "Optimized Utilization of Salix" (OPTUS), the influence of Salix wood quality on the potential for biofuel use is discussed, followed by issues related to the conversion of Salix biomass into liquid and gaseous transportation fuels. Thereafter, the studies address genotypic influence on soil carbon sequestration in Salix plantations, as well as on soil carbon dynamics and climate change impacts. Finally, the opportunities for plant breeding are discussed using willow as a resource for sustainable biofuel production. Substantial phenotypic and genotypic variation was reported for different wood quality traits important in biological (i.e., enzymatic and anaerobic) and thermochemical conversion processes, which is a prerequisite for plant breeding. Furthermore, different Salix genotypes can affect soil carbon sequestration variably, and life cycle assessment illustrates that these differences can result in different climate mitigation potential depending on genotype. Thus, the potential of Salix plantations for sustainable biomass production and its conversion into biofuels is shown. Large genetic variation in various wood and biomass traits, important for different conversion processes and carbon sequestration, provides opportunities to enhance the sustainability of the production system via plant breeding. This includes new breeding targets in addition to traditional targets for high yield to improve biomass quality and carbon sequestration potential.

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Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

“…Soil organic carbon stocks under the different Salix plantations in the 0–20 cm soil layer after 50 years as calculated using ICBM soil carbon model (modified from Kalita et al, 2021). …”

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

Section: Influence Of Salix Genotype Variations On Soil Carbon Dynami...mentioning

confidence: 99%

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Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

et al. 2022

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Understanding Soil Organic Carbon Dynamics of Short Rotation Plantations After Land Use Change—From Establishment to Recultivation

Echenique

Hesser

2023

Sustainable Production, Life Cycle Engineering and Management

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The increase in soil organic carbon (SOC) stocks has the potential to contribute to climate mitigation strategies by reducing atmospheric CO2. Short rotation plantations (SRP) provide bio-based resources and can possibly accumulate SOC. Estimating the potential SOC stocks of short rotation plantations can help decision-makers to implement strategies that reduce SOC loss and thus contribute to climate change mitigation. The dynamic changes in SOC were estimated for a case study using the RothC carbon turnover model. The results indicate that SOC stocks increased from 37.8 to 48.52 t C/ha within 20 years of the plantation’s lifetime. Thus, an annual average increase of 0.535 t C/ha year is expected. Given the importance of implementing strategies that support the potential climate mitigation benefits of SRP, a sensitivity analysis was employed to identify the relevant factors that affected SOC prediction. For instance, the influence of soil condition heterogeneity, such as clay content, can vary the estimations of SOC accumulated. This highlights the relevance of obtaining primary data at different locations within the plantation’s areas: to obtain a variety of SOC stock estimations that give a better representation of SOC accumulation. Such analysis help to propose suggestions that mitigate the climate effect of short rotation plantations.

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Salix species and varieties affect the molecular composition and diversity of soil organic matter

Dufour,

Wetterlind,

Nunan

et al. 2024

Plant Soil

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Background and aims Most studies of the relationships between the composition of soil organic matter and plant cover have been carried out at the plant genera level. However, they have largely overlooked the potential effects that plant varieties, belonging to the same genus, can have on soil organic matter. Methods We investigated whether plant varieties belonging to different Salix species (S. dasyclados and S. viminalis) impacted the composition of organic matter using mid-infrared spectroscopy and pyrolysis GC/MS. Top-soils were taken from an 18 year-old long-term field trial where six Salix varieties were grown as short-rotation coppice under two fertilisation regimes. Results Significant differences in the molecular composition and diversity of the soil organic matter were observed in the fertilised plots. The effects were mostly visible at the species level, i.e. the organic matter in soil under S. dasyclados varieties had higher molecular diversity and lignin content than under S. viminalis, potentially due to differences in the amount and composition of their litter inputs. Smaller differences among varieties from the same species were also observed. No significant effects of Salix varieties were observed in the unfertilised plots. The relatively high degree of spatial variability of several soil properties found in these plots may have masked plant variety and/or species effects. Conclusion This study provides evidence that the identity of Salix species or varieties can affect the molecular composition and diversity of soil organic matter. The corresponding traits should be considered in breeding programmes to enhance soil organic C accumulation and persistence.

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Soil Carbon Modelling in Salix Biomass Plantations: Variety Determines Carbon Sequestration and Climate Impacts

Cited by 11 publications

References 72 publications

Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

Optimized utilization of Salix—Perspectives for the genetic improvement toward sustainable biofuel value chains

Understanding Soil Organic Carbon Dynamics of Short Rotation Plantations After Land Use Change—From Establishment to Recultivation

Salix species and varieties affect the molecular composition and diversity of soil organic matter

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