气候变化领域集成服务门户(CCPortal): Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau

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DOI	10.1007/s00382-020-05563-1
	Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau
	Cuo L.; Zhang Y.; Xu-Ri; Zhou B.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-05-06
英文摘要	Net primary productivity (NPP) is an important indicator of plant dynamics and the net carbon exchange between the terrestrial ecosystem and atmosphere. Both the long-term shifts in climate mean (climate change) and short-term variations around the climate mean (climate variability) have impacts on NPP but studies examining both aspects of climate variations are rare especially in the data-scarce regions such as the Tibetan Plateau (TP). Here, we used a dynamic vegetation model to investigate the impacts of the changes and variabilities in temperature, precipitation, cloud cover and CO2 on NPP on the TP. The simulated NPP was evaluated using field and Moderate-Resolution Imaging Spectroradiometer NPP and was found to be reasonable. At monthly time scale, NPP significantly correlated concurrently and at 1-month lag with temperature, precipitation and cloud cover (coefficient of determination, R2, in 0.52–0.77). Annual NPP variability was high (low) where mean annual NPP was low (high). The effects of annual precipitation, cloud cover and temperature variability on annual NPP variability were spatially heterogeneous, and temperature variability appeared to be the dominant factor (R2 of 0.74). Whereas, NPP changes were very similar to CO2 increases across the TP (spatial correlation of 0.60), indicating that long-term changes in NPP were dominated by CO2 increases. For both variability and long-term changes in NPP, temperature was the major factor of influence (highest spatial correlation of 0.67). These findings could assist in making informed mitigation policies on the impacts of climate change and variability on ecosystem and local nomadic communities. © 2021, The Author(s).
英文关键词	Climate; Inter-annual variability; Long-term change; Net primary productivity; The Tibetan Plateau
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183357
作者单位	Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Building 3, Courtyard 16, Lin Cui Road, Chaoyang District, Beijing, 100101, China; Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; National Center for Atmospheric Research, Boulder, CO, United States; Institute of Meteorology, Qinghai Meteorological Bureau, Xining, China
推荐引用方式 GB/T 7714	Cuo L.,Zhang Y.,Xu-Ri,et al. Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau[J],2021,56(2021-05-06).
APA	Cuo L.,Zhang Y.,Xu-Ri,&Zhou B..(2021).Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau.Climate Dynamics,56(2021-05-06).
MLA	Cuo L.,et al."Decadal change and inter-annual variability of net primary productivity on the Tibetan Plateau".Climate Dynamics 56.2021-05-06(2021).