气候变化领域集成服务门户(CCPortal): Quantifying the contributions of climatic and human factors to vegetation net primary productivity dynamics in East Africa

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DOI	10.3389/ffgc.2023.1332631
	Quantifying the contributions of climatic and human factors to vegetation net primary productivity dynamics in East Africa
	Xu, Minghui; Zhang, Zhenke; Wang, Yue; Liu, Binglin
发表日期	2024
EISSN	2624-893X
起始页码	6
卷号	6
英文摘要	As an important part of the terrestrial ecosystem, vegetation dynamics are subject to impacts from both climate change and human activities. Clarifying the driving mechanisms of vegetation variation is of great significance for regional ecological protection and achieving sustainable development goals. Here, net primary productivity (NPP) was used to investigate the spatiotemporal variability of vegetation dynamics from 2000 to 2020 in East Africa, and its correlations with climate factors. Furthermore, we utilized partial derivatives analysis and set up different scenarios to distinguish the relative contributions of climatic and human factors to NPP changes. The results revealed that NPP exhibited a significant increase with 4.16 g C/m2/a from 2000 to 2020 in East Africa, and an upward trend was detected across 71.06% of the study area. The average contributions of precipitation, temperature, and solar radiation to the NPP inter-annual variations in East Africa were 2.02, -1.09, and 0.31 gC & sdot;m-2 & sdot;a-1, respectively. Precipitation made the greatest positive contribution among all of the climatic factors, while temperature made strong negative contributions. The contributions of climate change and human activities to NPP changes were 1.24 and 2.34 gC & sdot;m-2 & sdot;a-1, respectively. Moreover, the contribution rate of human activities to NPP increase was larger than that of climate change, while the role of climate change in NPP decrease was larger than that of human activities. The findings of the study can provide new evidence for a deeper understanding of ecosystem stability and carbon cycling in East Africa, as well as a reference for decision-making and scientific support for ecological environmental protection.
英文关键词	net primary productivity; climate change; human activities; attribution analysis; East Africa
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Forestry
WOS类目	Ecology ; Forestry
WOS记录号	WOS:001144551500001
来源期刊	FRONTIERS IN FORESTS AND GLOBAL CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/307313
作者单位	Nanjing University; Nanning Normal University
推荐引用方式 GB/T 7714	Xu, Minghui,Zhang, Zhenke,Wang, Yue,et al. Quantifying the contributions of climatic and human factors to vegetation net primary productivity dynamics in East Africa[J],2024,6.
APA	Xu, Minghui,Zhang, Zhenke,Wang, Yue,&Liu, Binglin.(2024).Quantifying the contributions of climatic and human factors to vegetation net primary productivity dynamics in East Africa.FRONTIERS IN FORESTS AND GLOBAL CHANGE,6.
MLA	Xu, Minghui,et al."Quantifying the contributions of climatic and human factors to vegetation net primary productivity dynamics in East Africa".FRONTIERS IN FORESTS AND GLOBAL CHANGE 6(2024).