دورية أكاديمية
Abrupt permafrost thaw drives spatially heterogeneous soil moisture and carbon dioxide fluxes in upland tundra.
| العنوان: | Abrupt permafrost thaw drives spatially heterogeneous soil moisture and carbon dioxide fluxes in upland tundra. |
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| المؤلفون: | Rodenhizer H; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., Natali SM; Woodwell Climate Research Center, Falmouth, Massachusetts, USA., Mauritz M; Biological Sciences, University of Texas at El Paso, El Paso, Texas, USA., Taylor MA; CliC International Project Office, World Climate Research Program, Department of Earth, Geographic and Climate Sciences, University of Massachusetts, Amherst, Massachusetts, USA., Celis G; Department of Anthropology, University of Arkansas, Fayetteville, Arkansas, USA., Kadej S; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., Kelley AK; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., Lathrop ER; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., Ledman J; Bonanza Creek Long Term Ecological Research Site, University of Alaska Fairbanks, Fairbanks, Alaska, USA., Pegoraro EF; Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA., Salmon VG; Environmental Science Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA., Schädel C; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., See C; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA., Webb EE; School of Natural Resources and Environment, University of Florida, Gainesville, Florida, USA., Schuur EAG; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, Arizona, USA. |
| المصدر: | Global change biology [Glob Chang Biol] 2023 Nov; Vol. 29 (22), pp. 6286-6302. Date of Electronic Publication: 2023 Sep 11. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Blackwell Pub Country of Publication: England NLM ID: 9888746 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1365-2486 (Electronic) Linking ISSN: 13541013 NLM ISO Abbreviation: Glob Chang Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Original Publication: Oxford, UK : Blackwell Science, 1995- |
| مستخلص: | Permafrost thaw causes the seasonally thawed active layer to deepen, causing the Arctic to shift toward carbon release as soil organic matter becomes susceptible to decomposition. Ground subsidence initiated by ice loss can cause these soils to collapse abruptly, rapidly shifting soil moisture as microtopography changes and also accelerating carbon and nutrient mobilization. The uncertainty of soil moisture trajectories during thaw makes it difficult to predict the role of abrupt thaw in suppressing or exacerbating carbon losses. In this study, we investigated the role of shifting soil moisture conditions on carbon dioxide fluxes during a 13-year permafrost warming experiment that exhibited abrupt thaw. Warming deepened the active layer differentially across treatments, leading to variable rates of subsidence and formation of thermokarst depressions. In turn, differential subsidence caused a gradient of moisture conditions, with some plots becoming consistently inundated with water within thermokarst depressions and others exhibiting generally dry, but more variable soil moisture conditions outside of thermokarst depressions. Experimentally induced permafrost thaw initially drove increasing rates of growing season gross primary productivity (GPP), ecosystem respiration (R (© 2023 John Wiley & Sons Ltd.) |
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| معلومات مُعتمدة: | DE-SC0006982 Biological and Environmental Research, Terrestrial Ecosystem Science Program; DE-SC0014085 Biological and Environmental Research, Terrestrial Ecosystem Science Program; DE-SC0020227 Biological and Environmental Research, Terrestrial Ecosystem Science Program; 1026415 National Science Foundation Bonanza Creek LTER Program; 0747195 National Science Foundation CAREER |
| فهرسة مساهمة: | Keywords: Arctic; abrupt thaw; carbon dioxide; carbon flux; permafrost; soil moisture; thermokarst |
| تواريخ الأحداث: | Date Created: 20230911 Latest Revision: 20231017 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1111/gcb.16936 |
| PMID: | 37694963 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1365-2486 |
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| DOI: | 10.1111/gcb.16936 |