气候变化领域集成服务门户(CCPortal): Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion

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DOI	10.1007/s10584-020-02748-9
	Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion
	Brown D.R.N.; Brinkman T.J.; Bolton W.R.; Brown C.L.; Cold H.S.; Hollingsworth T.N.; Verbyla D.L.
发表日期	2020
ISSN	0165-0009
卷号	162 期号:2
英文摘要	Warmer climatic conditions have been associated with numerous hydrologic changes that may impact riverbank erosion in cold regions, but the net effect is not well understood. We used regression and correlation analyses to examine the relationships among subarctic riverbank erosion and seasonal hydrology, the impact of climate change and variability, and the societal implications. Geomorphic change (loss and gain of vegetated land) was mapped along several river reaches in the Yukon River Basin, Alaska, throughout 1984 and 2017 using Landsat satellite imagery. Annual erosion rates were estimated from these spatial data. At most study sites, erosion rates (km2/year) were either positively correlated (r = 0.68–0.84, p = 0.0085–0.061) with monthly mean discharge within the cold season or inversely correlated (r = − 0.74 – −0.62, p < 0.10) with river ice breakup date in the spring. These proximate controls on erosion, in turn, were influenced both by climate variability and long-term climatic change. We conclude that increased cold season discharge and earlier freshet that occurs under warmer conditions enhance riverbank erosion in most areas. Climate-related changes to fluvial dynamics may impact communities through effects on infrastructure, travel safety, channel navigability, fish and wildlife habitat, and access to subsistence resources. © 2020, Springer Nature B.V.
英文关键词	Climate change; Fluvial geomorphology; Hydrology; River ice; Riverbank erosion; Subsistence
语种	英语
scopus关键词	Erosion; Hydrology; Rivers; Satellite imagery; Climate variability; Climatic conditions; Correlation analysis; Hydrologic changes; Riverbank erosion; Societal implications; Wildlife habitats; Yukon River basins; Climate change; bank erosion; climate conditions; climate variation; Landsat; landscape evolution; river bank; satellite imagery; seasonal variation; subarctic region; Yukon Basin
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147103
作者单位	Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, United States; International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, United States; Alaska Department of Fish and Game, Fairbanks, AK, United States; USDA Forest Service, PNW Research Station, University of Alaska Fairbanks, Fairbanks, AK, United States; Department of Natural Resources Management, University of Alaska Fairbanks, Fairbanks, AK, United States
推荐引用方式 GB/T 7714	Brown D.R.N.,Brinkman T.J.,Bolton W.R.,et al. Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion[J],2020,162(2).
APA	Brown D.R.N..,Brinkman T.J..,Bolton W.R..,Brown C.L..,Cold H.S..,...&Verbyla D.L..(2020).Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion.Climatic Change,162(2).
MLA	Brown D.R.N.,et al."Implications of climate variability and changing seasonal hydrology for subarctic riverbank erosion".Climatic Change 162.2(2020).