中国科学院机构知识库网格系统: Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland

Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland

文献类型：期刊论文


作者	Bai, Wenrui 1,2; Wang, Huanjiong 2; Ge, Quansheng 2
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
出版日期	2025-07-07
卷号	N/A
关键词	climate change Mongolian plateau peak dates of climatic factors peak greenness timing temperate grassland vegetation phenology
ISSN号	0899-8418
DOI	10.1002/joc.70027
产权排序	1
文献子类	Article ; Early Access
英文摘要	Peak greenness timing (PGT), indicating the timings of seasonal peak canopy structure, plays a key role in the terrestrial ecosystem carbon cycle. We assumed that the peak dates of climatic factors would have a greater impact on PGT than preseason climates because the potential maximum gross primary productivity would only be achieved when PGT matches seasonal peak resource availability. To test this hypothesis, we selected the Mongolian grassland as the study area and extracted the PGT using the MODIS EVI dataset. We simultaneously identified the peak dates of temperature, precipitation and radiation from the ERA5-land dataset. Subsequently, we compared the performance of two multiple linear regression models with peak dates of climatic factors or preseason climates as independent variables to simulate PGT. Finally, we compared the standardised regression coefficients of independent variables for each pixel to identify the dominant factor of PGT in different regions. The results showed that the regression model based on peak dates of climatic factors could explain more interannual variance of PGT in 71.0% of the study area than the model based on preseason climates. Although the dominant factor controlling PGT varied across regions with different background climates, the peak date of precipitation (PDP) was identified as the dominant factor in nearly half of the study area, followed by temperature and radiation. The explanatory power of PDP on PGT was stronger in more arid regions. Our research provides new insights into the drivers of PGT in temperate grasslands and enhances our understanding of how plant phenology adapts to seasonal climate variations.
URL标识	查看原文
WOS关键词	CLIMATE-CHANGE ; VEGETATION PHENOLOGY ; GROWING-SEASON ; PRODUCTIVITY ; SENESCENCE ; FEEDBACKS ; IMPACTS ; TRENDS ; CHINA ; MODEL
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:001523625500001
出版者	WILEY
源URL	[http://ir.igsnrr.ac.cn/handle/311030/215394]
专题	陆地表层格局与模拟院重点实验室_外文论文
通讯作者	Wang, Huanjiong
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China;
推荐引用方式 GB/T 7714	Bai, Wenrui,Wang, Huanjiong,Ge, Quansheng. Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2025,N/A.
APA	Bai, Wenrui,Wang, Huanjiong,&Ge, Quansheng.(2025).Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland.INTERNATIONAL JOURNAL OF CLIMATOLOGY,N/A.
MLA	Bai, Wenrui,et al."Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland".INTERNATIONAL JOURNAL OF CLIMATOLOGY N/A(2025).

入库方式： OAI收割

来源：地理科学与资源研究所

下载0

Peak Date of Precipitation Dominates Peak Greenness Timing of Temperate Grassland

其他版本