Contrasting drought impacts on the start of phenological growing season in Northern China during 1982-2015

doi:10.1002/joc.6400

	Contrasting drought impacts on the start of phenological growing season in Northern China during 1982-2015
	Deng, Haoyu 2,3; Yin, Yunhe 1,2; Wu, Shaohong 2,3; Xu, Xiaofeng 1
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
	2019-12-12
页码	18
关键词	drought growing season Northern China phenology
ISSN号	0899-8418
DOI	10.1002/joc.6400
通讯作者	Yin, Yunhe(yinyh@igsnrr.ac.cn)
英文摘要	Drought is a widely occurring extreme climatic event that may have various effects on vegetation phenology and activity. The change of the start of the phenological growing season (SOS) is one key mechanism for ecosystem responses to droughts yet remain unknown at large scale. This study used abnormal changes in the ratio of reference evapotranspiration (ETO) and precipitation (P) to detect the pre-season (defined as the 3 months before the growing season) monthly drought during 1982-2015. After that, the pre-season drought impacts on SOS were analysed. Drought appeared frequently (>3.6 times/10 years) in the northern and southwest China, as well as the coastal area of south China during the last 34 years. The droughts generally accompany a higher temperature and a stronger radiation, but the drought effects on the SOS differ between humid/sub-humid and semi-arid zones in northern China. Specifically, in the temperate humid/sub-humid zones, SOS under drought was 1.08-4.86 days earlier than during normal (no drought) years, and the response was greater to the droughts that appeared in the first two of the three pre-season months. In addition, in the cold, mid-, and warm temperate zones, the advance response was more concentrated in the SOS about DOY130-140, DOY125-150, and DOY80-160, respectively. However, in the north semi-arid zone, the SOS under drought was 0.66-3.45 days later than during normal years, and the response was greater to the droughts that appeared in the last two of the 3 months. These delay responses also concentrated in the SOS about DOY125-150. The contrasting drought impacts on phenology suggest that we should move beyond the vegetation activity under droughts such as the growth, productivity, and mortality, and pay more attention to the timing of vegetation activity to better quantify the carbon budget at Northern Hemisphere.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19040304] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20020202] ; National Natural Science Foundation of China[41831174] ; National Natural Science Foundation of China[41571043]
WOS关键词	SATELLITE-DERIVED PHENOLOGY ; CLIMATE-CHANGE ; SPRING PHENOLOGY ; ECOSYSTEM PRODUCTIVITY ; AGRICULTURAL DROUGHT ; VEGETATION PHENOLOGY ; GREEN-UP ; FOREST ; EVAPOTRANSPIRATION ; PRECIPITATION
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000502165300001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130731]
专题	中国科学院地理科学与资源研究所
通讯作者	Yin, Yunhe
作者单位	1.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Deng, Haoyu,Yin, Yunhe,Wu, Shaohong,et al. Contrasting drought impacts on the start of phenological growing season in Northern China during 1982-2015[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019:18.
APA	Deng, Haoyu,Yin, Yunhe,Wu, Shaohong,&Xu, Xiaofeng.(2019).Contrasting drought impacts on the start of phenological growing season in Northern China during 1982-2015.INTERNATIONAL JOURNAL OF CLIMATOLOGY,18.
MLA	Deng, Haoyu,et al."Contrasting drought impacts on the start of phenological growing season in Northern China during 1982-2015".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019):18.