Comparison of Heat Transfer and Soil Impacts of Air Curtain Burner Burning and Slash Pile Burning

Jang, Woongsoon; Page‐Dumroese, Deborah S.; Han, Han-Sup

doi:10.3390/f8080297

Cited by 9 publications

(1 citation statement)

References 48 publications

(57 reference statements)

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“…The disposal of municipal waste and the recycling of waste can result in GHG, toxins, and criteria pollutant emissions (Cambaliza et al, 2017). In regions where wildfires are a significant risk, there is often a critical need to reduce fuel loads in forests, with this loading liable to exacerbate the frequency and severity of catastrophic wildfires (Jang et al, 2017; North et al, 2015). Thus, in principle, GHG and criteria pollutant emissions can be reduced through burning less agricultural residues on site, reducing the emissions from animal waste, diverting organic material from landfills, and managing forest biomass.…”

Section: Introductionmentioning

confidence: 99%

The good, the bad, and the future: Systematic review identifies best use of biomass to meet air quality and climate policies in California

Freer‐Smith,

Bailey‐Bale,

Donnison

et al. 2023

GCB Bioenergy

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California has large and diverse biomass resources and provides a pertinent example of how biomass use is changing and needs to change, in the face of climate mitigation policies. As in other areas of the world, California needs to optimize its use of biomass and waste to meet environmental and socioeconomic objectives. We used a systematic review to assess biomass use pathways in California and the associated impacts on climate and air quality. Biomass uses included the production of renewable fuels, electricity, biochar, compost, and other marketable products. For those biomass use pathways recently developed, information is available on the effects—usually beneficial—on greenhouse gas (GHG) emissions, and there is some, but less, published information on the effects on criteria pollutants. Our review identifies 34 biomass use pathways with beneficial impacts on either GHG or pollutant emissions, or both—the “good.” These included combustion of forest biomass for power and conversion of livestock‐associated biomass to biogas by anaerobic digestion. The review identified 13 biomass use pathways with adverse impacts on GHG emissions, criteria pollutant emissions, or both—the “bad.” Wildfires are an example of one out of eight pathways which were found to be bad for both climate and air quality, while only two biomass use pathways reduced GHG emissions relative to an identified counterfactual but had adverse air quality impacts. Issues of high interest for the “future” included land management to reduce fire risk, future policies for the dairy industries, and full life‐cycle analysis of biomass production and use.

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Section: Introductionmentioning

confidence: 99%

The good, the bad, and the future: Systematic review identifies best use of biomass to meet air quality and climate policies in California

Freer‐Smith,

Bailey‐Bale,

Donnison

et al. 2023

GCB Bioenergy

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Soil amendments alter tree growth and wood decay after forest thinning

Page‐Dumroese,

Jurgensen,

Miller

et al. 2024

Soil Science Soc of Amer J

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Forest soil amendments are increasingly used in western US forests to dispose of unmerchantable woody residues, reduce wildfire risk, and improve soil properties. Our objective was to determine the effect of fertilizer and organic amendments on tree growth and organic matter decomposition after thinning. Treatments were a control, three single soil amendments (wood chips, fertilizer, and biochar), and one combined soil amendment (biochar + fertilizer), each applied after thinning a ponderosa pine (Pinus ponderosa Dougl. ex. Laws) stand. After 10 years, amendment treatments had no effect on tree diameter increment (p = 0.600), but the biochar + fertilizer and wood chip treatments significantly increased height growth (p = 0.006). To estimate belowground biological changes, we used wood stakes made from aspen (Populus tremuloides Michx.) and loblolly pine (Pinus taeda L.) as an index of microbial activity. Stakes were placed: (1) on top of the litter/amendments, (2) at the interface between the litter/amendments and mineral soil, and (3) vertically inserted into the mineral soil, and stake mass loss was measured over 5 years. Stake mass loss of each species was least on the soil surface and increased with increasing depth. Aspen stakes generally had greater mass loss at all three soil locations in the fertilizer and biochar treatments. In contrast, pine stake mass loss was lower than aspen and less affected by fertilizer. Using thinned tree biomass to create amendments can improve forest productivity by enhancing soil conditions and mitigating wildfire. However, the impact of amendments on tree growth may take decades to be detectable.

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Continuous Replanting Could Degrade Soil Health in Short-Rotation Plantation Forestry

et al. 2023

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Purpose of Review Continuous replanting of land with the same or similar plant species can result in the accumulation of harmful soil microbes, which can lead to crop failure. In this review, we explore the influence of constant replanting on the health of short-rotation forestry soil, focusing on the accumulation of deleterious microbes and the decline of beneficial microbes. We also suggest possible practical solutions to address this problem and consider future research that could be conducted to better understand and reduce the build-up of deleterious soil microbes in short-rotation forestry soil. Recent Findings Compelling evidence that continuous replanting of the same tree species in short-rotation plantation forestry might contribute to the build-up of deleterious soil microbes is still lacking. However, our assessment of existing soil microbiome data from global short-rotation plantation environments suggests a high risk of an accumulation of harmful microbes and a loss of beneficial microbes in plots that were continually replanted with the same tree species. Based on this evidence, and that from agriculture, we propose further research to acquire a better understanding of the build-up of harmful soil microbes in short-rotation plantation forestry, and suggest crop rotation and intercropping strategies to avoid this malady in the future. Summary The accumulation of microbes detrimental to plantation trees and the decline of microbes beneficial to these trees are realistic risks when plantations are continually replanted with the same tree species. Extensive research is necessary to evaluate the impact of short continuous planting rotations on the biodiversity of soil microbes in plantations and to develop strategies that would alleviate the build-up of detrimental microbes.

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Comparison of Heat Transfer and Soil Impacts of Air Curtain Burner Burning and Slash Pile Burning

Cited by 9 publications

References 48 publications

The good, the bad, and the future: Systematic review identifies best use of biomass to meet air quality and climate policies in California

The good, the bad, and the future: Systematic review identifies best use of biomass to meet air quality and climate policies in California

Soil amendments alter tree growth and wood decay after forest thinning

Continuous Replanting Could Degrade Soil Health in Short-Rotation Plantation Forestry

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