气候变化领域集成服务门户(CCPortal): Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska

CCPortal

DOI	10.1038/s41467-021-26876-7
	Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska
	Kim J.H.; Kim Y.; Zona D.; Oechel W.; Park S.-J.; Lee B.-Y.; Yi Y.; Erb A.; Schaaf C.L.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	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. © 2021, The Author(s).
语种	英语
scopus关键词	carbon cycle; net ecosystem production; phenology; remote sensing; snowmelt; tundra; Alaska; Arctic; United States; snow; water; Alaska; carbon cycle; climate change; ecosystem; plant development; season; temperature; time factor; tundra; Alaska; Carbon Cycle; Climate Change; Ecosystem; Plant Development; Seasons; Snow; Temperature; Time Factors; Tundra; Water
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250569
作者单位	Department of Civil and Environmental Engineering, Yonsei University, Seoul, South Korea; Department of Biology, San Diego State University, San Diego, CA, United States; Department of Animal and Plant Science, University of Sheffield, Sheffield, United Kingdom; Department of Geography, University of Exeter, Exeter, United Kingdom; Division of Atmospheric Sciences, KOPRI, Incheon, South Korea; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States; School for the Environment, University of Massachusetts Boston, Boston, MA, United States
推荐引用方式 GB/T 7714	Kim J.H.,Kim Y.,Zona D.,et al. Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska[J],2021,12(1).
APA	Kim J.H..,Kim Y..,Zona D..,Oechel W..,Park S.-J..,...&Schaaf C.L..(2021).Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska.Nature Communications,12(1).
MLA	Kim J.H.,et al."Carbon response of tundra ecosystems to advancing greenup and snowmelt in Alaska".Nature Communications 12.1(2021).