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Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska

Cited 1 time in wos
Cited 1 time in scopus
Title
Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska
Other Titles
알래스카 녹화 및 융설 조기화에 대한 동토 생태계의 탄소순환 반응
Authors
Kim, JiHyun
Kim, Yeonjoo
Zona, Donatella
Oechel, Walter
Park, Sang-Jong
Lee, Bang Yong
Yi, Yonghong
Erb, Angela
Schaaf, Crystal L.
Subject
Science & Technology - Other Topics
Keywords
MODIS-LAI PRODUCTCLIMATE-CHANGEINTERANNUAL VARIABILITYMULTISCALE ANALYSISPHENOLOGYEXCHANGECOVERCO2VALIDATIONSATELLITE
Issue Date
2021-11-25
Citation
Kim, JiHyun, et al. 2021. "Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska". NATURE COMMUNICATIONS, 12(1): 1-10.
Abstract
The ongoing disproportionate increases in temperature and precipitation over the Arctic region may greatly alter the latitudinal gradients in greenup and snowmelt timings as well as associated carbon dynamics of tundra ecosystems. Here we use remotely-sensed and ground-based datasets and model results embedding snowmelt timing in phenology at seven tundra flux tower sites in Alaska during 2001-2018, showing that the carbon response to early greenup or delayed snowmelt varies greatly depending upon local climatic limits. Increases in net ecosystem productivity (NEP) due to early greenup were amplified at the higher latitudes where temperature and water strongly colimit vegetation growth, while NEP decreases due to delayed snowmelt were alleviated by a relief of water stress. Given the high likelihood of more frequent delayed snowmelt at higher latitudes, this study highlights the importance of understanding the role of snowmelt timing in vegetation growth and terrestrial carbon cycles across warming Arctic ecosystems. The ongoing disproportionate increases in temperature and precipitation in the Alaska may alter the latitudinal gradients in greenup and snowmelt timings as well as carbon dynamics. With a broad range of datasets and model results, the authors show that the carbon response to early greenup or delayed snowmelt varies greatly depending upon local climatic limits.
URI
https://repository.kopri.re.kr/handle/201206/13328
DOI
http://dx.doi.org/10.1038/s41467-021-26876-7
Type
Article
Station
기타()
Indexed
SCIE
Appears in Collections  
2017 Polar Academic Program (PE17900)
2018 Polar Academic Program (PE18900)
2021-2021, Interrelationship Investigation and Comprehensive Monitoring based on Permafrost-Atmospheric Environment (21-21) / Lee, Bang Yong (PN21011)
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