Wildfire processes in Canada are expected to change as a result of climate change.
Predictive modeling of wildfire occurrence and susceptibility requires knowledge of
ignition expectations and landscape conditions leading to burn. This research examines and quantifies the spatial and temporal patterns of wildfire across Canada with focus on wildfire occurrence and national scale drivers of susceptibility. Baseline ignition expectations and trends are identified and used to create unique fire ignition regimes, assess anthropogenic influence on ignitions, and determine regions with anomalously high ignitions. The aspatial and spatial characteristics of land cover were characterized for pre- and post-fire landscapes. These included land cover composition, configuration, and abiotic covariates. Temporal trends in forest pattern following ignition are examined
and national scale drivers of wildfire susceptibility determined. Fire ignition regimes and anomalous ignition regions provide spatially explicit outputs for exploring ignition expectation in Canada. Wildfire was identified to burn mainly in coniferous forests with little fragmentation. Fragmentation increased after wildfire and regeneration of pre-fire
forest pattern took 20 years. Additionally, anthropogenic proximity positively influenced
ignition expectation, ignition trend, and wildfire susceptibility. This research provides broad scale methods to assess wildfire occurrence and susceptibility across Canada and will facilitate understanding of changing wildfire processes in the future. Additionally, this research highlights the importance of anthropogenic activity on natural fire processes.
| Identifer | oai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/3006 |
| Date | 31 August 2010 |
| Creators | Gralewicz, Nicholas John |
| Contributors | Nelson, Trisalyn |
| Source Sets | University of Victoria |
| Language | English, English |
| Detected Language | English |
| Type | Thesis |
| Rights | Available to the World Wide Web |
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