Soil moisture outweighs temperature for triggering the green-up date in temperate grasslands

doi:10.1007/s00704-020-03145-z

	Soil moisture outweighs temperature for triggering the green-up date in temperate grasslands
	Tao, Zexing 2; Huang, Wenjie 1,2; Wang, Huanjiong 2
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2020-02-22
页码	13
ISSN号	0177-798X
DOI	10.1007/s00704-020-03145-z
通讯作者	Wang, Huanjiong(wanghj@igsnrr.ac.cn)
英文摘要	Investigating grassland phenology and its relationship with climatic factors is crucial for understanding ecosystem responses to climate change. However, there have been few studies on the impact of soil moisture on grassland phenology. In this study, we extracted the green-up date in the Inner Mongolia grasslands, China, using the normalized difference vegetation index (NDVI) data from the Global Inventory Modeling and Mapping Studies (GIMMS) NDVI3g dataset (1982-2015) and the Moderate Resolution Imaging Spectroradiometer (2001-2015). We investigated the spatiotemporal pattern of the green-up date and its relationship with four climatic factors, including growing degree days, chilling days, soil moisture, and solar radiation. Most areas (67.1%) exhibited a trend towards earlier green-up date, but the significant trends (p < 0.05) were only found in 13.4% of the areas. For both datasets, the pixels with a negative regression coefficient of soil moisture accounted for more than 87% of the total area (more than 21% significantly, p < 0.05). Regarding the other factors, the sign of regression coefficients was not consistent among pixels. Thus, soil moisture correlated more significantly with the green-up date in temperate grasslands compared with the other climatic factors. This study provides the scientific basis for better understanding the mechanism of phenological response to climate change in temperate grasslands.
资助项目	National Key R&D Program of China[2018YFA0606102] ; National Natural Science Foundation of China[41771056] ; National Natural Science Foundation of China[41901014] ; Youth Innovation PromotionAssociation, CAS[2018070] ; Program for Kezhen Excellent Talents in IGSNRR, CAS[2018RC101]
WOS关键词	VEGETATION PHENOLOGY ; SPRING PHENOLOGY ; CLIMATE-CHANGE ; TIBETAN PLATEAU ; INNER-MONGOLIA ; GROWING-SEASON ; NORTH-AMERICA ; CHINA ; SATELLITE ; PRECIPITATION
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000516367900002
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation PromotionAssociation, CAS ; Program for Kezhen Excellent Talents in IGSNRR, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133008]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Huanjiong
作者单位	1.Chifeng Univ, Coll Life Sci, Chifeng 024000, Inner Mongolia, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Tao, Zexing,Huang, Wenjie,Wang, Huanjiong. Soil moisture outweighs temperature for triggering the green-up date in temperate grasslands[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2020:13.
APA	Tao, Zexing,Huang, Wenjie,&Wang, Huanjiong.(2020).Soil moisture outweighs temperature for triggering the green-up date in temperate grasslands.THEORETICAL AND APPLIED CLIMATOLOGY,13.
MLA	Tao, Zexing,et al."Soil moisture outweighs temperature for triggering the green-up date in temperate grasslands".THEORETICAL AND APPLIED CLIMATOLOGY (2020):13.