气候变化领域集成服务门户(CCPortal): Velocity of change in vegetation productivity over northern high latitudes

CCPortal

DOI	10.1038/s41559-017-0328-y
	Velocity of change in vegetation productivity over northern high latitudes
	Huang, Mengtian; Piao, Shilong; Janssens, Ivan A.; Zhu, Zaichun; Wang, Tao; Wu, Donghai; Ciais, Philippe; Myneni, Ranga B.; Peaucelle, Marc; Peng, Shushi; Yang, Hui; Penuelas, Josep
通讯作者	Piao, SL (通讯作者)
发表日期	2017
ISSN	2397-334X
起始页码	1649
结束页码	1654
卷号	1 期号:11
英文摘要	Warming is projected to increase the productivity of northern ecosystems. However, knowledge on whether the northward displacement of vegetation productivity isolines matches that of temperature isolines is still limited. Here we compared changes in the spatial patterns of vegetation productivity and temperature using the velocity of change concept, which expresses these two variables in the same unit of displacement per time. We show that across northern regions (>50 degrees N), the average velocity of change in growing-season normalized difference vegetation index (NDVIGS, an indicator of vegetation productivity; 2.8 +/- 1.1 km yr(-1)) is lower than that of growing-season mean temperature (T-GS; 5.4 +/- 1.0 km yr(-1)). In fact, the NDVI (GS)velocity was less than half of the T(GS)velocity in more than half of the study area, indicating that the northward movement of productivity isolines is much slower than that of temperature isolines across the majority of northern regions (about 80% of the area showed faster changes in temperature than productivity isolines). We tentatively attribute this mismatch between the velocities of productivity and temperature to the effects of limited resource availability and vegetation acclimation mechanisms. Analyses of ecosystem model simulations further suggested that limited nitrogen availability is a crucial obstacle for vegetation to track the warming trend.
关键词	CLIMATE-CHANGE NITROGEN DEPOSITION TEMPERATURE PHENOLOGY RESPONSES CO2 SATELLITE EARTH TIME PHOTOSYNTHESIS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Ecology ; Evolutionary Biology
WOS记录号	WOS:000417193400017
来源期刊	NATURE ECOLOGY & EVOLUTION
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/259102
推荐引用方式 GB/T 7714	Huang, Mengtian,Piao, Shilong,Janssens, Ivan A.,et al. Velocity of change in vegetation productivity over northern high latitudes[J]. 中国科学院青藏高原研究所,2017,1(11).
APA	Huang, Mengtian.,Piao, Shilong.,Janssens, Ivan A..,Zhu, Zaichun.,Wang, Tao.,...&Penuelas, Josep.(2017).Velocity of change in vegetation productivity over northern high latitudes.NATURE ECOLOGY & EVOLUTION,1(11).
MLA	Huang, Mengtian,et al."Velocity of change in vegetation productivity over northern high latitudes".NATURE ECOLOGY & EVOLUTION 1.11(2017).