气候变化领域集成服务门户(CCPortal): The South Asia Monsoon Break Promotes Grass Growth on the Tibetan Plateau

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DOI	10.1029/2020JG005951
	The South Asia Monsoon Break Promotes Grass Growth on the Tibetan Plateau
	Ren, Yanghang; Yang, Kun; Wang, Han; Zhao, Long; Chen, Yingying; Zhou, Xu; La, Zhu
通讯作者	Yang, K (通讯作者)
发表日期	2021
ISSN	2169-8953
EISSN	2169-8961
卷号	126 期号:3
英文摘要	As a region that is highly sensitive to global climate change, the Tibetan Plateau (TP) experiences an intra-seasonal soil water deficient due to the reduced precipitation during the South Asia monsoon (SAM) breaks. Few studies have investigated the impact of SAM breaks on TP ecological processes, although a number of studies have explored the effects of inter-annual and decadal climate variability. In this study, the response of vegetation activity to SAM breaks was investigated. The data used are: (1) soil moisture from in situ, satellite remote sensing and data assimilation; and (2) the normalized difference vegetation index (NDVI) and solar-induced chlorophyll fluorescence (SIF). We found that in the SAM break-impacted region, which is distributed in the central-eastern part of TP, photosynthesis become more active during SAM breaks. And temporal variability in the photosynthesis of this region is controlled mainly by solar radiation variability and has little sensitivity to soil moisture. We adopted a diagnostic process-based modeling approach to examine the causes of enhanced plant activity during SAM breaks on the central-eastern TP. Our analysis indicates that more carbon assimilated by photosynthesis in the reduced precipitation is stimulated by increases in solar radiation absorbed and temperature. This study highlights the importance of sub-seasonal climate variability for characterizing the relationship between vegetation and climate.
关键词	LIGHT-USE EFFICIENCY SOIL-MOISTURE TERRESTRIAL VEGETATION ALPINE MEADOW INTERANNUAL VARIABILITY SUMMER MONSOON CLIMATE-CHANGE DESERT SHRUBS PRECIPITATION WATER
英文关键词	optimality‐ based light use efficiency model; SAM break; SIF; Tibetan Plateau; vegetation growth
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS记录号	WOS:000636286700018
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260331
推荐引用方式 GB/T 7714	Ren, Yanghang,Yang, Kun,Wang, Han,et al. The South Asia Monsoon Break Promotes Grass Growth on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,126(3).
APA	Ren, Yanghang.,Yang, Kun.,Wang, Han.,Zhao, Long.,Chen, Yingying.,...&La, Zhu.(2021).The South Asia Monsoon Break Promotes Grass Growth on the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,126(3).
MLA	Ren, Yanghang,et al."The South Asia Monsoon Break Promotes Grass Growth on the Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 126.3(2021).