气候变化领域集成服务门户(CCPortal): Mismatch in elevational shifts between satellite observed vegetation greenness and temperature isolines during 2000-2016 on the Tibetan Plateau

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DOI	10.1111/gcb.14432
	Mismatch in elevational shifts between satellite observed vegetation greenness and temperature isolines during 2000-2016 on the Tibetan Plateau
	An, Shuai; Zhu, Xiaolin; Shen, Miaogen; Wang, Yafeng; Cao, Ruyin; Chen, Xuehong; Yang, Wei; Chen, Jin; Tang, Yanhong
通讯作者	Shen, MG ; Wang, YF (通讯作者)
发表日期	2018
ISSN	1354-1013
EISSN	1365-2486
起始页码	5411
结束页码	5425
卷号	24 期号:11
英文摘要	Climate warming on the Tibetan Plateau tends to induce an uphill shift of temperature isolines. Observations and process-based models have both shown that climate warming has resulted in an increase in vegetation greenness on the Tibetan Plateau in recent decades. However, it is unclear whether the uphill shift of temperature isolines has caused greenness isolines to shift upward and whether the two shifts match each other. Our analysis of satellite observed vegetation greenness during the growing season (May-Sep) and gridded climate data for 2000-2016 documented a substantial mismatch between the elevational shifts of greenness and temperature isolines. This mismatch is probably associated with a lagging response of greenness to temperature change and with the elevational gradient of greenness. The lagging response of greenness may be associated with water limitation, resources availability, and acclimation. This lag may weaken carbon sequestration by Tibetan ecosystems, given that greenness is closely related to primary carbon uptake and ecosystem respiration increases exponentially with temperature. We also found that differences in terrain slope angle accounted for large spatial variations in the elevational gradient of greenness and thus the velocity of elevational shifts of greenness isolines and the sensitivity of elevational shifts of greenness isolines to temperature, highlighting the role of terrain effects on the elevational shifts of greenness isolines. The mismatches and the terrain effect found in this study suggest that there is potentially large micro-topographical difference in response and acclimation/adaptation of greenness to temperature changes in plants. More widespread in situ measurements and fine-resolution remote sensing observations and fine-gridded climate data are required to attribute the mismatch to specific environmental drivers and ecological processes such as vertical changes in community structure, plant physiology, and distribution of species.
关键词	NORTHERN HIGH-LATITUDES CLIMATE-CHANGE ALTITUDINAL GRADIENT ALPINE GRASSLANDS MOUNTAIN PLANTS CARBON BALANCE SOURCE REGION PRECIPITATION GROWTH PRODUCTIVITY
英文关键词	climate warming; elevational shift; grassland; Tibetan Plateau; vegetation greenness; velocity
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000447760300032
来源期刊	GLOBAL CHANGE BIOLOGY
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/259346
推荐引用方式 GB/T 7714	An, Shuai,Zhu, Xiaolin,Shen, Miaogen,et al. Mismatch in elevational shifts between satellite observed vegetation greenness and temperature isolines during 2000-2016 on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,24(11).
APA	An, Shuai.,Zhu, Xiaolin.,Shen, Miaogen.,Wang, Yafeng.,Cao, Ruyin.,...&Tang, Yanhong.(2018).Mismatch in elevational shifts between satellite observed vegetation greenness and temperature isolines during 2000-2016 on the Tibetan Plateau.GLOBAL CHANGE BIOLOGY,24(11).
MLA	An, Shuai,et al."Mismatch in elevational shifts between satellite observed vegetation greenness and temperature isolines during 2000-2016 on the Tibetan Plateau".GLOBAL CHANGE BIOLOGY 24.11(2018).