globalchange  > 气候减缓与适应
DOI: 10.1038/NGEO2986
论文题名:
Reduced North American terrestrial primary productivity linked to anomalous Arctic warming
作者: Kim J.-S.; Kug J.-S.; Jeong S.-J.; Huntzinger D.N.; Michalak A.M.; Schwalm C.R.; Wei Y.; Schaefer K.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:8
起始页码: 572
结束页码: 576
语种: 英语
Scopus关键词: net primary production ; Northern Hemisphere ; precipitation (climatology) ; primary production ; seasonal variation ; temperature anomaly ; terrestrial environment ; Arctic ; North America ; United States
英文摘要: Warming temperatures in the Northern Hemisphere have enhanced terrestrial productivity. Despite the warming trend, North America has experienced more frequent and more intense cold weather events during winters and springs. These events have been linked to anomalous Arctic warming since 1990, and may affect terrestrial processes. Here we analyse multiple observation data sets and numerical model simulations to evaluate links between Arctic temperatures and primary productivity in North America. We find that positive springtime temperature anomalies in the Arctic have led to negative anomalies in gross primary productivity over most of North America during the last three decades, which amount to a net productivity decline of 0.31 PgC yr-1 across the continent. This decline is mainly explained by two factors: severe cold conditions in northern North America and lower precipitation in the South Central United States. In addition, United States crop-yield data reveal that during years experiencing anomalous warming in the Arctic, yields declined by approximately 1 to 4% on average, with individual states experiencing declines of up to 20%.We conclude that the strengthening of Arctic warming anomalies in the past decades has remotely reduced productivity over North America. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105744
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea; School of Environmental Science and Engineering, South University of Science and Technology of China (SUSTECH), Shenzhen, China; School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, United States; Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, United States; Woods Hole Research Center, Falmouth, MA, United States; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States; Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States; National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, CO, United States

Recommended Citation:
Kim J.-S.,Kug J.-S.,Jeong S.-J.,et al. Reduced North American terrestrial primary productivity linked to anomalous Arctic warming[J]. Nature Geoscience,2017-01-01,10(8)
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