Pile burning of cutting debris in stands of hazel (Corylus avellana): An experimental study of smouldering combustion towards the validation of a burning protocol

Pastor, Elsa; Pérez, Yolanda; Àgueda, Alba; Miralles, Marta; Planas, Eulàlia

doi:10.1016/j.firesaf.2009.10.003

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…At 25, 52, 85, 155, and 247 DAB, TN loss was significantly higher in MS treatment than on other dates. Likewise, TN loss in MS treatment was significantly higher at 25 and 52 than at 5,25,65,85,122,180,208, and 247 DAB ( Figure 9).…”

Section: Nitrogen Loss In Sedimentmentioning

confidence: 88%

“…There has been a need to manage unwanted harvest to avoid large wildfires and minimize their impact at all levels [48]. Pile burn is recognized as an economical treatment for disposing of harvested residues [5], but the critical question in terms of the sustainability of their practice is to what extent will it alter soil functions and cause soil degradation? Should soils before burning be protected somehow, or do the benefits of pile burning outweigh the possible impact on soil?…”

Section: Implications For Land Managementmentioning

confidence: 99%

“…However, burning agricultural residues in piles is a cost-effective alternative for reduction residues when the management of the landscape with fire is forbidden [4]. Pile burn is a widely adopted practice in the rural Mediterranean area for residues management [5,6] despite the environmental impacts (e.g., air and water pollution). Even though the environmental impacts can be relevant, the effects of this practice are poorly studied.…”

Section: Introductionmentioning

confidence: 99%

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Short-Term Effects of Pile Burn on N Dynamic and N Loss in Mediterranean Croatia

et al. 2020

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There is a lack of information in the rural Mediterranean area about agricultural pile burning impacts on soil nitrogen (N) dynamic and the N loss. Therefore, this research aims to study the impacts of moderate (MS), and high (HS) severity burn on N transformation and N losses, compared to an unburned (C) during the first year. The experimental plots (10 m2) were established in Croatia (43°58′ N 15°31′ E), in a slope ~18°, with a southwest exposition. Five days after the burn, C treatment had a significantly higher total N (TN) than MS and HS. Generally, the runoff was significantly different between burned and C treatments. Sediment yield, concentrations, and TN loss were significantly higher in MS than in C treatment. The concentrations of ammonium (NH4-N) and nitrate (NO3-N) in the runoff, and their losses were higher in burn treatments than in C treatment. These values were high in the first three months after burn, although the peaks in later periods correspond to extreme rainfall events. Principal component analysis showed that sediment yield was associated with sediment concentration, runoff, and TN loss (Factor 1). In addition, rainfall amount and intensity were inversely related to NH4-N concentration and losses (Factor 2). The NO3-N concentration was positively related to NO3-N losses. Overall, MS treatment had severe effects on N loss and, sediment yield can be used as an indicator of soil degradation after pile burns.

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Section: Nitrogen Loss In Sedimentmentioning

confidence: 88%

Section: Implications For Land Managementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Short-Term Effects of Pile Burn on N Dynamic and N Loss in Mediterranean Croatia

et al. 2020

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“…61 Infrared and thermocouple monitoring of burns of piles of hazel logs have recorded maximum temperatures of 643 C, and up to 750 C with added wind. 62 Although the temperature of combustion in the boilers was not measured during this study (due to health and safety restrictions), operating temperatures have been stated to range from 700-900 C in sugar-producing factories in Rio de Janiero, Brazil. 63 An indirect way to assess the maximum temperatures reached during the burn in the ash itself is to determine the presence of certain temperature-sensitive phases.…”

Section: Burn Conditionsmentioning

confidence: 98%

Generation of crystalline silica from sugarcane burning

et al. 2010

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Sugarcane leaves contain amorphous silica, which may crystallise to form crystalline silica polymorphs (cristobalite or quartz), during commercial sugarcane harvesting where sugarcane plants are burned. Respirable airborne particulate containing these phases may present an occupational health hazard. Following from an earlier pilot study (J. S. Le Blond, B. J. Williamson, C. J. Horwell, A. K. Monro, C. A. Kirk and C. Oppenheimer, Atmos. Environ., 2008, 42, 5558-5565) in which experimental burning of sugarcane leaves yielded crystalline silica, here we report on actual conditions during sugarcane burning on commercial estates, investigate the physico-chemical properties of the cultivated leaves and ash products, and quantify the presence of crystalline silica. Commercially grown raw sugarcane leaf was found to contain up to 1.8 wt% silica, mostly in the form of amorphous silica bodies (with trace impurities e.g., Al, Na, Mg), with only a small amount of quartz. Thermal images taken during several pre-harvest burns recorded temperatures up to 1056 degrees C, which is sufficient for metastable cristobalite formation. No crystalline silica was detected in airborne particulate from pre-harvest burning, collected using a cascade impactor. The sugarcane trash ash formed after pre-harvest burning contained between 10 and 25 wt% SiO(2), mostly in an amorphous form, but with up to 3.5 wt% quartz. Both quartz and cristobalite were identified in the sugarcane bagasse ash (5-15 wt% and 1-3 wt%, respectively) formed in the processing factory. Electron microprobe analysis showed trace impurities of Mg, Al and Fe in the silica particles in the ash. The absence of crystalline silica in the airborne emissions and lack of cristobalite in trash ash suggest that high temperatures during pre-harvest burning were not sustained long enough for cristobalite to form, which is supported by the presence of low temperature sylvite and calcite in the residual ash. The occurrence of quartz and cristobalite in bagasse ash is significant as the ash is recycled onto the fields where erosion and/or mechanical disturbance could break down the deposits and re-suspend respirable-sized particulate. Appropriate methods for treatment and disposal of bagasse ash must, therefore, be employed and adequate protection given to workers exposed to these dusts.

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Contain and Control: Wildfire Suppression Effectiveness at Incidents and Across Landscapes

Plucinski

2019

Curr Forestry Rep

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Pile burning of cutting debris in stands of hazel (Corylus avellana): An experimental study of smouldering combustion towards the validation of a burning protocol

Cited by 8 publications

References 9 publications

Short-Term Effects of Pile Burn on N Dynamic and N Loss in Mediterranean Croatia

Short-Term Effects of Pile Burn on N Dynamic and N Loss in Mediterranean Croatia

Generation of crystalline silica from sugarcane burning

Contain and Control: Wildfire Suppression Effectiveness at Incidents and Across Landscapes

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