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Legacy effects of spring phenology on vegetation growth under preseason meteorological drought in the Northern Hemisphere

文献类型：期刊论文

作者Zeng, Zhaoqi1,2; Wu, Wenxiang2,3; Ge, Quansheng2; Li, Zhaolei4,5; Wang, Xiaoyue2; Zhou, Yang2; Zhang, Zhengtao6,7; Li, Yamei1,8; Huang, Han1,2; Liu, Guangxu9
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2021-11-15
卷号310页码:13
ISSN号0168-1923
关键词Preseason meteorological drought Spring phenology Coupling effects Vegetation growth Northern Hemisphere
DOI10.1016/j.agrformet.2021.108630
通讯作者Wu, Wenxiang(wuwx@igsnrr.ac.cn) ; Penuelas, Josep(Josep.Penuelas@uab.cat)
英文摘要Revealing the physiological mechanisms and the implications of changes in spring phenology is crucial for understanding ecosystem productivity and functioning. Previous studies reported an increased vegetation growth associated with warming-induced earlier spring phenology, which can in turn make feedback to the climate systems and increase summer drought. The effects of preseason drought on spring phenology, especially their combined implications for vegetation growth, however, remain largely unknown. We first used four standard methods to extract dates for the start of spring phenology (SOS) from Normalized Difference Vegetation Index (NDVI3g) data across extratropical ecosystems in the Northern Hemisphere (>30 degrees N) during 1982-2015, then calculated the sensitivity of SOS to preseason meteorological drought (preseason drought) using the Standardized Precipitation-Evapotranspiration Index (SPEI), and finally analyzed the coupling legacy effects of preseason drought and advanced SOS on seasonal vegetation growth across biomes. Our findings indicated that between 1982 and 2015 (1) SOS was positively correlated with preseason SPEI in 68.5% of pixels, 33.3% of which were significantly correlated (p < 0.05); the dominant timescales of preseason SPEI (preseason length) were 1 and 6 accumulated months. Mean SOS under extreme preseason drought also advanced in each biome. (2) Interestingly, SOS, rather than preseason drought or other climatic factors, had a dominant but opposite effect on spring (positively correlated) and summer (negatively correlated) vegetation growth. Most (86.4%) areas with increased spring growth were in regions with an earlier SOS, even under extreme preseason drought, but the combined effects of preseason drought and an earlier SOS greatly decreased summer vegetation growth in all biomes. Our results demonstrated that the preseason droughts during 1982-2015 had not yet reached the point beyond which they could overwhelm the role of warming in advancing spring phenology in most regions, but the earlier SOS induced by warming could exacerbate the effects of preseason drought and eventually have profound negative effects on vegetation growth in the middle and later stages of the growing season. This synthesis will advance our current understanding of mechanisms underlying atmosphere-biosphere feedbacks, and benefit biogeochemical models in simulating vegetation growth.
WOS关键词CLIMATE EXTREMES ; RESPONSES ; IMPACTS ; SHIFTS ; PRODUCTIVITY ; TEMPERATURE ; SENSITIVITY ; ECOSYSTEMS ; ONSET
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040101] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040304] ; Spanish Government grant[PID2019-110521GB-I00] ; Catalan Government grant[SGR 2017-1005]
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种英语
出版者ELSEVIER
WOS记录号WOS:000698753900016
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Spanish Government grant ; Catalan Government grant
源URL[http://ir.igsnrr.ac.cn/handle/311030/165640]  
专题中国科学院地理科学与资源研究所
通讯作者Wu, Wenxiang; Penuelas, Josep
作者单位1.Univ Chinese Acad Sci, Dept Environm & Resources, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China
5.Southwest Univ, Acad Agr Sci, Chongqing 400715, Peoples R China
6.Beijing Normal Univ, Acad Disaster Reduct & Emergency Management, Fac Geog Sci, Minist Emergency Management, Beijing 100875, Peoples R China
7.Beijing Normal Univ, Minist Educ, Fac Geog Sci, Beijing 100875, Peoples R China
8.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
9.Gannan Normal Univ, Sch Geog & Environm Engn, Ganzhou 341000, Peoples R China
10.CSIC, Global Ecol Unit CREAF CSIC UAB, Bellaterra 08193, Catalonia, Spain
推荐引用方式
GB/T 7714		 Zeng, Zhaoqi,Wu, Wenxiang,Ge, Quansheng,et al. Legacy effects of spring phenology on vegetation growth under preseason meteorological drought in the Northern Hemisphere[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,310:13.
APA Zeng, Zhaoqi.,Wu, Wenxiang.,Ge, Quansheng.,Li, Zhaolei.,Wang, Xiaoyue.,...&Penuelas, Josep.(2021).Legacy effects of spring phenology on vegetation growth under preseason meteorological drought in the Northern Hemisphere.AGRICULTURAL AND FOREST METEOROLOGY,310,13.
MLA Zeng, Zhaoqi,et al."Legacy effects of spring phenology on vegetation growth under preseason meteorological drought in the Northern Hemisphere".AGRICULTURAL AND FOREST METEOROLOGY 310(2021):13.

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来源：地理科学与资源研究所

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