气候变化领域集成服务门户(CCPortal): Temporal Variation and Factors Influencing the Stability of NPP in Chinese Shrubland Ecosystems

CCPortal

DOI	10.3390/f15030531
	Temporal Variation and Factors Influencing the Stability of NPP in Chinese Shrubland Ecosystems
	Li, Ting; Hu, Jun; Li, Li; Liang, Jin; Li, Dandan; Liu, Qing
发表日期	2024
EISSN	1999-4907
起始页码	15
结束页码	3
卷号	15 期号:3
英文摘要	Given the importance of net primary productivity (NPP) as an indicator of ecosystem productivity and its role in the global carbon cycle, understanding the factors that influence its stability can greatly improve our understanding of shrubland ecosystems and their response to global change. Between 2015 and 2022, we visited most of the primary shrubland in China and surveyed 751 shrubland patches. We collected data on community structure (canopy cover), shrub and herb species diversity, and soil physicochemical properties (soil nitrogen content and soil phosphorus content). We also used remote sensing data to obtain NPP from 2001 to 2022. We quantified temporal trends in shrubland stability in China and used structural equation modeling to disentangle the direct and indirect effects of climate, soil, and shrub community structural properties. We found that 85.3% of China's shrublands remained stable in terms of productivity from 2001 to 2022, 10.6% of the shrublands increased in stability, and 4.1% of the shrublands need to be alerted to a significant decrease in stability. These changes in stability were mainly related to precipitation changes. We found that changes in precipitation directly affected the stability of net productivity and also indirectly through changes in shrub cover and species richness. Some aspects of community structure moderated these effects. We further found that the portion of shrubland with an upward trend in stability did not have a significant correlation between the stability of net primary productivity and community structure and soil N. Instead, soil phosphorus was the largest direct influence.
英文关键词	net primary productivity stability; driving factor; precipitation variability; soil nutrients; species richness; structural equation modeling
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:001191412600001
来源期刊	FORESTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301005
作者单位	Chinese Academy of Sciences; Chengdu Institute of Biology, CAS; Chinese Academy of Sciences; Chengdu Institute of Biology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Li, Ting,Hu, Jun,Li, Li,et al. Temporal Variation and Factors Influencing the Stability of NPP in Chinese Shrubland Ecosystems[J],2024,15(3).
APA	Li, Ting,Hu, Jun,Li, Li,Liang, Jin,Li, Dandan,&Liu, Qing.(2024).Temporal Variation and Factors Influencing the Stability of NPP in Chinese Shrubland Ecosystems.FORESTS,15(3).
MLA	Li, Ting,et al."Temporal Variation and Factors Influencing the Stability of NPP in Chinese Shrubland Ecosystems".FORESTS 15.3(2024).