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Published on: February 23, 2024
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Development of burn prescriptions using quantitative expert judgement
Jane G Cawson1, Jamie E Burton1, Kate A Parkins1
1School of Agriculture, Food and Ecosystem Sciences, Faculty of Science, The University of Melbourne, 500 Yarra Boulevard, Burnley, Victoria, Australia, 3121.
Journal of Environmental Management
|October 28, 2025
Summary
Structured elicitation of expert knowledge improved prescribed burning prescriptions, increasing burn windows for high-coverage fires. Patchy fire outcomes may require ignition technique adjustments.
Area of Science:
- Ecological Sciences
- Forestry
- Environmental Management
Background:
- Prescribed burning relies on burn prescriptions, often based on expert knowledge.
- Current methods for eliciting expert insights lack rigor, impacting prescription reliability.
- Structured elicitation offers a more robust approach to capturing experiential knowledge.
Purpose of the Study:
- To develop new burn prescriptions for Victorian native forests and woodlands using structured elicitation techniques.
- To create prescriptions for two priority burn outcomes: mixed severity/patchy and high severity/high coverage.
- To investigate the influence of fuel hazards on prescribed burning conditions.
Main Methods:
- Employed structured elicitation techniques to gather expert knowledge from burn practitioners.
- Developed prescriptions for five vegetation scenarios with varying fuel hazards.
- Compared elicited prescriptions against current ones to assess changes in burn windows.
Main Results:
- New prescriptions for high severity, high coverage burns expanded the burn window by 40%.
- Prescriptions for mixed severity, patchy burns showed little change in burn window.
- Fuel hazard had minimal impact on the prescribed weather conditions.
- Elicited prescriptions for patchy burns were generally wetter and less windy than for high-coverage burns.
Conclusions:
- Quantitative expert judgment effectively harnesses practitioner experience for developing burn prescriptions.
- Achieving patchy burn outcomes may necessitate modifications beyond weather conditions, such as ignition techniques.
- Field testing is recommended for further refinement of the developed burn prescriptions.
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