气候变化领域集成服务门户(CCPortal): Leaf unfolding of Tibetan alpine meadows captures the arrival of monsoon rainfall

CCPortal

DOI	10.1038/srep20985
	Leaf unfolding of Tibetan alpine meadows captures the arrival of monsoon rainfall
	Li, Ruicheng; Luo, Tianxiang; Moelg, Thomas; Zhao, Jingxue; Li, Xiang; Cui, Xiaoyong; Du, Mingyuan; Tang, Yanhong
通讯作者	Luo, TX (通讯作者)
发表日期	2016
ISSN	2045-2322
卷号	6
英文摘要	The alpine meadow on the Tibetan Plateau is the highest and largest pasture in the world, and its formation and distribution are mainly controlled by Indian summer monsoon effects. However, little is known about how monsoon-related cues may trigger spring phenology of the vast alpine vegetation. Based on the 7-year observations with fenced and transplanted experiments across lower to upper limits of Kobresia meadows in the central plateau (4400-5200 m), we found that leaf unfolding dates of dominant sedge and grass species synchronized with monsoon onset, regardless of air temperature. We also found similar patterns in a 22-year data set from the northeast plateau. In the monsoon-related cues for leaf unfolding, the arrival of monsoon rainfall is crucial, while seasonal air temperatures are already continuously above 0 degrees C. In contrast, the early-emerging cushion species generally leafed out earlier in warmer years regardless of precipitation. Our data provide evidence that leaf unfolding of dominant species in the alpine meadows senses the arrival of monsoon-season rainfall. These findings also provide a basis for interpreting the spatially variable greening responses to warming detected in the world's highest pasture, and suggest a phenological strategy for avoiding damages of pre-monsoon drought and frost to alpine plants.
关键词	SPRING VEGETATION PHENOLOGY CLIMATE-CHANGE ALTITUDINAL GRADIENT PLATEAU PRECIPITATION RESPONSES TEMPERATURE SEASONALITY VARIABILITY FOOTPRINT
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000369658200001
来源期刊	SCIENTIFIC REPORTS
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/258846
推荐引用方式 GB/T 7714	Li, Ruicheng,Luo, Tianxiang,Moelg, Thomas,et al. Leaf unfolding of Tibetan alpine meadows captures the arrival of monsoon rainfall[J]. 中国科学院青藏高原研究所,2016,6.
APA	Li, Ruicheng.,Luo, Tianxiang.,Moelg, Thomas.,Zhao, Jingxue.,Li, Xiang.,...&Tang, Yanhong.(2016).Leaf unfolding of Tibetan alpine meadows captures the arrival of monsoon rainfall.SCIENTIFIC REPORTS,6.
MLA	Li, Ruicheng,et al."Leaf unfolding of Tibetan alpine meadows captures the arrival of monsoon rainfall".SCIENTIFIC REPORTS 6(2016).