Varying response of vegetation to sea ice dynamics over the Arctic

doi:10.1016/j.scitotenv.2021.149378

	Varying response of vegetation to sea ice dynamics over the Arctic
	Yu, Linfei 1,2; Leng, Guoyong 1,2; Python, Andre 3,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-12-10
卷号	799 页码:15
关键词	Arctic Cumulative response Lagged response Sea ice dynamics Vegetation
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2021.149378
通讯作者	Leng, Guoyong(lenggy@igsnrr.ac.cn)
英文摘要	Recent reduction of sea ice may have contributed to vegetation growth over the Arctic through albedo feedback effects to atmospheric warming. Understanding the varying response of vegetation to sea ice dynamics is critical for predicting future climate change over the Arctic and middle-high latitudes. Instead of looking at the direct response characteristics, we perform a systematic analysis of the time-lag and time-cumulation responses of vegetation to sea ice dynamics, using a long-term Arctic Normalized Difference Vegetation Index (NDVI) dataset and three sea ice indices (sea ice concentration (SIC), sea ice area (SIA) and sea ice extent (SIE)) from 1982 to 2015. The results show that annual NDVI in the Arctic has exhibited a significant (p < 0.05) increase during 1982 to 2015, while a significant (p < 0.05) decrease is detected for annual SIC, SIA and SIE. The results of a regression analysis on NDVI identify a lag time of 7-months, 8-months and 9-months for vegetation response to SIC, SIA and SIE in February, March and April, respectively, while no evident lag response is observed in summer except for August. For the cumulation response, NDVI in February, March and April shows the largest response to the previous 5, 7 and 9 months of sea ice variations, respectively, while a short cumulation response of 1 to 3 months is found in summer. The differences in the spatial patterns of lagged time are usually not statistically significant in autumn and winter. A shorter lag response (1-3 month) is found in the Yamalia region in June. Further analysis suggests that vegetation response to sea ice dynamics depends on bio - climatic characteristics and soil pH, with vegetation responding faster to sea ice changes in acidic soil. This study provides observational evidences on the varying response of vegetation to sea ice dynamics over the Arctic, which has great implications for predicting vegetation-climate feedback and climate change. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2020YFA0608502] ; National Natural Science Foundation of China[42077420]
WOS关键词	SHRUB EXPANSION ; TEMPERATURE ; IMPACTS ; DROUGHT ; ALASKA
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000701266700009
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165948]
专题	中国科学院地理科学与资源研究所
通讯作者	Leng, Guoyong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Zhejiang Univ, Ctr Data Sci, Hangzhou 310058, Peoples R China 4.Univ Oxford, Big Data Inst, Oxford OX3 7LF, England
推荐引用方式 GB/T 7714	Yu, Linfei,Leng, Guoyong,Python, Andre. Varying response of vegetation to sea ice dynamics over the Arctic[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,799:15.
APA	Yu, Linfei,Leng, Guoyong,&Python, Andre.(2021).Varying response of vegetation to sea ice dynamics over the Arctic.SCIENCE OF THE TOTAL ENVIRONMENT,799,15.
MLA	Yu, Linfei,et al."Varying response of vegetation to sea ice dynamics over the Arctic".SCIENCE OF THE TOTAL ENVIRONMENT 799(2021):15.