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DOI	10.1088/1748-9326/ab4937
	The effects of forest cover and disturbance on torrential hazards: Large-scale evidence from the Eastern Alps
	Sebald J.; Senf C.; Heiser M.; Scheidl C.; Pflugmacher D.; Seidl R.
发表日期	2019
ISSN	17489318
卷号	14 期号:11
英文摘要	Global human population growth, limited space for settlements and a booming tourism industry have led to a strong increase of human infrastructure in mountain regions. As this infrastructure is highly exposed to natural hazards, a main role of mountain forests is to regulate the environment and reduce hazard probability. However, canopy disturbances are increasing in many parts of the world, potentially threatening the protection function of forests. Yet, large-scale quantitative evidence on the influence of forest cover and disturbance on natural hazards remains scarce to date. Here we quantified the effects of forest cover and disturbance on the probability and frequency of torrential hazards for 10 885 watersheds in the Eastern Alps. Torrential hazard occurrences were derived from a comprehensive database documenting 3768 individual debris flow and flood events between 1986 and 2018. Forest disturbances were mapped from Landsat satellite time series analysis. We found evidence that forests reduce the probability of natural hazards, with a 25 percentage point increase in forest cover decreasing the probability of torrential hazards by 8.7%± 1.2%. Canopy disturbances generally increased the probability of torrential hazard events, with the regular occurrence of large disturbance events being the most detrimental disturbance regime for natural hazards. Disturbances had a bigger effect on debris flows than on flood events, and press disturbances were more detrimental than pulse disturbances. We here present the first large scale quantification of forest cover and disturbance effects on torrential hazards. Our findings highlight that forests constitute important green infrastructure in mountain landscapes, efficiently reducing the probability of natural hazards, but that increasing forest disturbances can weaken the protective function of forests. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	debris flow; disturbance; flood; forest; natural hazards; torrential hazards
语种	英语
scopus关键词	Debris; Floods; Hazards; Landforms; Population statistics; Probability; Time series analysis; Tourism industry; Debris flows; disturbance; forest; Forest disturbances; Green infrastructure; Human infrastructure; Human population growth; Natural hazard; Forestry; debris flow; disturbance; forest cover; forest ecosystem; infrastructure; Landsat; mountain environment; natural hazard; satellite altimetry; tourism development; Alps; Eastern Alps
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154762
作者单位	Institute of Silviculture, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), Peter-Jordan-Str. 82, Vienna, A-1190, Austria; Institute of Mountain Risk Engineering, Department of Civil Engineering and Natural Hazards, University of Natural Resources and Life Sciences (BOKU), Peter-Jordan-Str. 82, Vienna, A-1190, Austria; Geography Department, Humboldt-Universität zu Berlin, Unter den Linden 6, Berlin, D-10099, Germany
推荐引用方式 GB/T 7714	Sebald J.,Senf C.,Heiser M.,et al. The effects of forest cover and disturbance on torrential hazards: Large-scale evidence from the Eastern Alps[J],2019,14(11).
APA	Sebald J.,Senf C.,Heiser M.,Scheidl C.,Pflugmacher D.,&Seidl R..(2019).The effects of forest cover and disturbance on torrential hazards: Large-scale evidence from the Eastern Alps.Environmental Research Letters,14(11).
MLA	Sebald J.,et al."The effects of forest cover and disturbance on torrential hazards: Large-scale evidence from the Eastern Alps".Environmental Research Letters 14.11(2019).