热岩溶
一氧化二氮
冻土带
环境科学
永久冻土
自然地理学
地球科学
环境化学
地质学
地理
北极的
化学
海洋学
有机化学
作者
Josh Hashemi,David A. Lipson,Kyle A. Arndt,Scott J. Davidson,Aram Kalhori,Kyle Lunneberg,Lona van Delden,Walter C. Oechel,Donatella Zona
标识
DOI:10.1038/s43247-024-01583-5
摘要
Global atmospheric concentrations of nitrous oxide have been increasing over previous decades with emerging research suggesting the Arctic as a notable contributor. Thermokarst processes, increasing temperature, and changes in drainage can cause degradation of polygonal tundra landscape features resulting in elevated, well-drained, unvegetated soil surfaces that exhibit large nitrous oxide emissions. Here, we outline the magnitude and some of the dominant factors controlling variability in emissions for these thermokarst landscape features in the North Slope of Alaska. We measured strong nitrous oxide emissions during the growing season from unvegetated high centered polygons (median (mean) = 104.7 (187.7) µg N
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