干旱区生态环境知识资源中心(Arid): Spatio-temporal patterns and control mechanism of the ecosystem carbon use efficiency across the Mongolian Plateau

Arid

DOI	10.1016/j.scitotenv.2023.167883
	Spatio-temporal patterns and control mechanism of the ecosystem carbon use efficiency across the Mongolian Plateau
	Liu, Xinyi; Lai, Quan; Yin, Shan; Bao, Yuhai; Tong, Siqin; Adiya, Zolzaya; Sanjjav, Amarjargal; Gao, Rihe
通讯作者	Lai, Q
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	907
英文摘要	Carbon use efficiency (CUE) is a crucial parameter that reflects the carbon storage within ecosystems, providing insight into the potential for carbon sequestration at the ecosystem scale and its feedback on climate change. The Mongolian Plateau exemplifies an arid and semi-arid region with a delicate ecological environment that displays heightened sensitivity to global climate change. Understanding the variation and control of CUE is critical for assessing regional carbon. However, few studies have focused on the interaction of factors influencing CUE; furthermore, how CUE responds to climate change and anthropogenic activities remains unclear. Here, we aimed to investigate spatiotemporal patterns and their control mechanisms by generating CUE data based on multi source remote sensing data. CUE demonstrated a slow downward trend from 2000 to 2018, with higher values in relatively dry-cool regions and lower values in relatively humid-warm regions. Furthermore, CUE values were ranked by biome as follows: grassland > sandy vegetation > cropland > shrubs > forest, driven by climate characteristics, vegetation coverage, water stress, stand age, and management practices. Additionally, climatic factors affected CUE more than the soil variables, except for alpine meadows. The climate factors of precipitation (PPT), index of water availability (IWA) (QPPT = 0.487, QIWA = 0.444), and soil factors, e.g., pH and soil organic content (SOC) (QPH = 0.397, QSOC = 0.372), had the greatest influence on CUE. Finally, most two explanatory factors interacted to effectively enhance the explanation of CUE; the synergy of the IWA and PPT contributed the most to CUE (QIWA boolean AND PPT = 0.604). Moreover, the joint effect of climate change and anthropogenic activities was identified as the major contributor (68 %) to the decline in CUE within this region. This study presents compelling evidence highlighting the importance of considering climate change and anthropogenic disturbances in ecosystem management and conservation efforts in arid and semi-arid regions.
英文关键词	Carbon use efficiency Climatic factors Soil variable Control mechanism Mongolian Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001106100900001
WOS关键词	PRECIPITATION-USE EFFICIENCY ; GENERALIZED ADDITIVE-MODELS ; NET PRIMARY PRODUCTIVITY ; CONSTANT FRACTION ; VEGETATION ; CLIMATE ; RESPIRATION ; MODIS ; WATER ; ACCLIMATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405425
推荐引用方式 GB/T 7714	Liu, Xinyi,Lai, Quan,Yin, Shan,et al. Spatio-temporal patterns and control mechanism of the ecosystem carbon use efficiency across the Mongolian Plateau[J],2024,907.
APA	Liu, Xinyi.,Lai, Quan.,Yin, Shan.,Bao, Yuhai.,Tong, Siqin.,...&Gao, Rihe.(2024).Spatio-temporal patterns and control mechanism of the ecosystem carbon use efficiency across the Mongolian Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,907.
MLA	Liu, Xinyi,et al."Spatio-temporal patterns and control mechanism of the ecosystem carbon use efficiency across the Mongolian Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 907(2024).