Assessment of lake-level fluctuation as an indicator of fire activity in boreal Canada

Chan, Xue Yan; Robinne, François; Parisien, Marc‐André; Wang, Xianli; M, Fleming, Thomas,; Flannigan, Mike D.

doi:10.1016/j.ecolind.2022.109611

Cited by 2 publications

(1 citation statement)

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“…Open water bodies in peatlands have been observed to grow or shrink in size with changes in water availability, although water level is also mediated by the amount of water stored in the surrounding peat (Arsenault et al, 2019;Brown et al, 2010;Holden et al, 2018;Rezanezhad et al, 2016). In larger lake systems, lake water level has been correlated with wildfire burned area in western Canada (Chan et al 2022). Monitoring the dynamics of these water bodies via remote sensing would improve the quality of fire danger rating systems for peatland environments, due to the difficulty of inferring peatland water deficits purely from sparse rainfall observations and highly uncertain estimates of complex evaporation processes.…”

Section: Peatland Monitoringmentioning

confidence: 99%

Toward peatland fire vulnerability monitoring using surface water maps: A geospatial and temporal analysis of peatland water bodies using Synthetic Aperture RADAR

Schultz

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Peatlands, essential ecosystems with unique hydrological characteristics, are increasingly vulnerable to fire events due to climate change. The primary objective of this thesis is to test fire vulnerability monitoring in peatlands through the mapping of peatland water bodies, aiming to assess the hydrologic conditions over time. Employing geospatial analysis techniques, the study investigates the backscatter attributes and spatial patterns of these water bodies, elucidating their role in peatland hydrology and their impact on fire dynamics. This information is applied to test the design of Random Forest surface water classification models which test model parameters and training data schemes to determine the best surface water classification model. The characterization of small peatland water bodies and the testing of these models offers a strong foundation for a surface water classification that can capture surface water in peatlands, provided more intentional training data which represents the various conditions in peatlands is added.

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Section: Peatland Monitoringmentioning

confidence: 99%

Toward peatland fire vulnerability monitoring using surface water maps: A geospatial and temporal analysis of peatland water bodies using Synthetic Aperture RADAR

Schultz

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Drought threat to terrestrial gross primary production exacerbated by wildfires

Zong,

Tian,

Liu

et al. 2024

Commun Earth Environ

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Frequent droughts have aggravated the occurrence of wildfires and led to substantial losses in terrestrial ecosystems. However, our understanding of compound drought-wildfire events, including the hotspots, spatiotemporal patterns, trends, and their impacts on global vegetation growth, remains unclear. Utilizing satellite data on terrestrial water storage, burned areas, and gross primary production (GPP) from 2002 to 2020, we identified a positive correlation between droughts and wildfires and mapped the global patterns of compound drought-wildfire events. Approximately 38.6% of vegetated areas across the globe witnessed rise in probability of compound drought-wildfire events ( < 0.016 events/10a). This increasing trend is spatially asymmetric, and greater amplification is observed across the Northern hemisphere due to frequent droughts. Furthermore, the GPP reductions induced by compound drought-wildfire events are more than twice as high as that caused by isolated droughts. These findings identify hotspots for compound drought-wildfire events and offer quantitative evidence of their greater impacts on ecosystems, aiding in the assessment of compound event risks and the implementation of future climate actions.

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Assessment of lake-level fluctuation as an indicator of fire activity in boreal Canada

Cited by 2 publications

References 38 publications

Toward peatland fire vulnerability monitoring using surface water maps: A geospatial and temporal analysis of peatland water bodies using Synthetic Aperture RADAR

Toward peatland fire vulnerability monitoring using surface water maps: A geospatial and temporal analysis of peatland water bodies using Synthetic Aperture RADAR

Drought threat to terrestrial gross primary production exacerbated by wildfires

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