气候变化领域集成服务门户(CCPortal): Urban warming advances spring phenology but reduces the response of phenology to temperature in the conterminous United States

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DOI	10.1073/pnas.1911117117
	Urban warming advances spring phenology but reduces the response of phenology to temperature in the conterminous United States
	Meng L.; Mao J.; Zhou Y.; Richardson A.D.; Lee X.; Thornton P.E.; Ricciuto D.M.; Li X.; Dai Y.; Shi X.; Jia G.
发表日期	2020
ISSN	0027-8424
起始页码	4228
结束页码	4233
卷号	117 期号:8
英文摘要	Urbanization has caused environmental changes, such as urban heat islands (UHIs), that affect terrestrial ecosystems. However, how and to what extent urbanization affects plant phenology remains relatively unexplored. Here, we investigated the changes in the satellite-derived start of season (SOS) and the covariation between SOS and temperature (RT) in 85 large cities across the conterminous United States for the period 2001–2014. We found that 1) the SOS came significantly earlier (6.1 ± 6.3 d) in 74 cities and RT was significantly weaker (0.03 ± 0.07) in 43 cities when compared with their surrounding rural areas (P < 0.05); 2) the decreased magnitude in RT mainly occurred in cities in relatively cold regions with an annual mean temperature <17.3 °C (e.g., Minnesota, Michigan, and Pennsylvania); and 3) the magnitude of urban−rural difference in both SOS and RT was primarily correlated with the intensity of UHI. Simulations of two phenology models further suggested that more and faster heat accumulation contributed to the earlier SOS, while a decrease in required chilling led to a decline in RT magnitude in urban areas. These findings provide observational evidence of a reduced covariation between temperature and SOS in major US cities, implying the response of spring phenology to warming conditions in nonurban environments may decline in the warming future. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Phenology; Temperature response; Urban heat island; Urbanization
语种	英语
scopus关键词	article; city; cold stress; heat; Michigan; Minnesota; Pennsylvania; phenology; rural area; simulation; spring; temperature sensitivity; urban area; urban rural difference; urbanization; warming; climate change; ecosystem; heat; plant development; season; United States; Cities; Climate Change; Ecosystem; Hot Temperature; Plant Development; Seasons; United States; Urbanization
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161044
作者单位	Meng, L., Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011, United States; Mao, J., Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States, Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States; Zhou, Y., Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011, United States; Richardson, A.D., School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, AZ 86011, United States, Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86011, United States; Lee, X., School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, United States, Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Thornton, P.E., Environmental...
推荐引用方式 GB/T 7714	Meng L.,Mao J.,Zhou Y.,et al. Urban warming advances spring phenology but reduces the response of phenology to temperature in the conterminous United States[J],2020,117(8).
APA	Meng L..,Mao J..,Zhou Y..,Richardson A.D..,Lee X..,...&Jia G..(2020).Urban warming advances spring phenology but reduces the response of phenology to temperature in the conterminous United States.Proceedings of the National Academy of Sciences of the United States of America,117(8).
MLA	Meng L.,et al."Urban warming advances spring phenology but reduces the response of phenology to temperature in the conterminous United States".Proceedings of the National Academy of Sciences of the United States of America 117.8(2020).