干旱区生态环境知识资源中心(Arid): Forest connectivity percolation thresholds for fire spread under different weather conditions

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DOI	10.1016/j.foreco.2021.119558
	Forest connectivity percolation thresholds for fire spread under different weather conditions
	Duane, Andrea; Miranda, Marcelo D.; Brotons, Lluis
通讯作者	Duane, A (corresponding author), Forest Sci Ctr Catalonia CTFC, Carretera Vella St Llorenc Morunys Km 2, Solsona 25280, Lleida, Spain.
来源期刊	FOREST ECOLOGY AND MANAGEMENT
ISSN	0378-1127
EISSN	1872-7042
出版年	2021
卷号	498
英文摘要	How fuel influences fire spread at different spatial scales has been broadly studied but it is still under research. Although prior research has generally explored fuel effects at the stand scale, there is increasing recognition that forest structure and composition at the landscape scale can regulate fire size when weather conditions allow fire to have enough initial capacity to spread. Simulation models have usually been adopted to test forest landscape structure's effect on fire activity, but we still lack empirical evidence of these effects on a broad scale and using multiple fires. In this study, we use the graph theory and the percolation theory to test the relationship between forest functional connectivity and fire size in a Mediterranean region (Catalonia, NE Spain, similar to 32000 km(2)) and under different weather conditions. Using a total sample of 554 fires that occurred between 1987 and 2019, we relate fire size with forest connectivity inside the fire perimeter, which we describe with different interpretations of forest-land cover maps and at different fire dispersal distances (10-, 100- and 2000- meters spotting capacity). Previously, fires were classified according to the weather and drought conditions in which they occurred (windy, arid or regular days, and dry or non-dry conditions) with the hypothesis that the capacity of fire to read the forest landscape differs according to weather variables. We found that a forest percolation threshold existed for most types of fires: forest connectivity had a positive influence on fire size until a threshold at which the landscape becomes continuous and other processes to control fire cease to have effect. This percolation threshold is about 0.40 for fires occurring under arid conditions. Under regular weather conditions, the threshold is nonexistent and forest connectivity always exerts a positive effect on fire size. Notably, forest connectivity has no influence on fire size on windy- and dry-weather days. All these results are of paramount relevance for forest and landscape management aimed at reducing wildfire risk, since for fires driven by extreme weather conditions (more prone to happen in the future), landscape offers less opportunities to stop them. Researchers and managers need to identify the probability of experiencing each of the different weather types in a climate change context to boost the management of forests and landscapes in a cost-effective way.
英文关键词	Forest connectivity Forest management Wildfire Landscape ecology Wind-driven fires Extreme wildfires
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000686595900007
WOS关键词	MEDITERRANEAN BASIN ; LANDSCAPE DYNAMICS ; PRESCRIBED FIRE ; WILDFIRE ; CATALONIA ; FUEL ; MANAGEMENT ; PATTERNS ; DRIVERS ; REGIMES
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368293
作者单位	[Duane, Andrea; Brotons, Lluis] Forest Sci Ctr Catalonia CTFC, Carretera Vella St Llorenc Morunys Km 2, Solsona 25280, Lleida, Spain; [Miranda, Marcelo D.] Pontificia Univ Catolica Chile, Fac Agr & Forestry, Ave Vicuna Mackenna 4860, Santiago, Chile; [Miranda, Marcelo D.] Ctr Appl Ecol & Sustainabil CAPES, Av Libertador Bernardo OHiggins 340, Santiago, Chile; [Brotons, Lluis] Autonomous Univ Barcelona, CREAF, Edifici C, Barcelona 08193, Spain; [Brotons, Lluis] CSIC, Cerdanyola Del Valles 08193, Spain
推荐引用方式 GB/T 7714	Duane, Andrea,Miranda, Marcelo D.,Brotons, Lluis. Forest connectivity percolation thresholds for fire spread under different weather conditions[J],2021,498.
APA	Duane, Andrea,Miranda, Marcelo D.,&Brotons, Lluis.(2021).Forest connectivity percolation thresholds for fire spread under different weather conditions.FOREST ECOLOGY AND MANAGEMENT,498.
MLA	Duane, Andrea,et al."Forest connectivity percolation thresholds for fire spread under different weather conditions".FOREST ECOLOGY AND MANAGEMENT 498(2021).