气候变化领域集成服务门户(CCPortal): Plant size traits are key contributors in the spatial variation of net primary productivity across terrestrial biomes in China

CCPortal

DOI	10.1016/j.scitotenv.2024.171412
	Plant size traits are key contributors in the spatial variation of net primary productivity across terrestrial biomes in China
	An, Nannan; Lu, Nan; Wang, Mengyu; Chen, Yongzhe; Wu, Fuzhong; Fu, Bojie
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	923
卷号	923
英文摘要	Understanding the spatial variability of ecosystem functions is an important step forward in predicting changes in ecosystems under global transformations. Plant functional traits are important drivers of ecosystem functions such as net primary productivity (NPP). Although trait -based approaches have advanced rapidly, the extent to which specific plant functional traits are linked to the spatial diversity of NPP at a regional scale remains uncertain. Here, we used structural equation models (SEMs) to disentangle the relative effects of abiotic variables (i.e., climate, soil, nitrogen deposition, and human footprint) and biotic variables (i.e., plant functional traits and community structure) on the spatial variation of NPP across China and its eight biomes. Additionally, we investigated the indirect influence of climate and soil on the spatial variation of NPP by directly affecting plant functional traits. Abiotic and biotic variables collectively explained 62.6 % of the spatial differences of NPP within China, and 28.0 % -69.4 % across the eight distinct biomes. The most important abiotic factors, temperature and precipitation, had positive effects for NPP spatial variation. Interestingly, plant functional traits associated with the size of plant organs (i.e., plant height, leaf area, seed mass, and wood density) were the primary biotic drivers, and their positive effects were independent of biome type. Incorporating plant functional traits improved predictions of NPP by 6.7 % -50.2 %, except for the alpine tundra on the Qinghai -Tibet Plateau. Our study identifies the principal factors regulating NPP spatial variation and highlights the importance of plant size traits in predictions of NPP variation at a large scale. These results provide new insights for involving plant size traits in carbon process models.
英文关键词	Climate; Leaf economics traits; Macroecology; Net primary productivity; Plant size traits; Spatial variation
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001218780200001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301721
作者单位	Fujian Normal University; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES); Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Henan University of Science & Technology; University of Hong Kong
推荐引用方式 GB/T 7714	An, Nannan,Lu, Nan,Wang, Mengyu,et al. Plant size traits are key contributors in the spatial variation of net primary productivity across terrestrial biomes in China[J],2024,923.
APA	An, Nannan,Lu, Nan,Wang, Mengyu,Chen, Yongzhe,Wu, Fuzhong,&Fu, Bojie.(2024).Plant size traits are key contributors in the spatial variation of net primary productivity across terrestrial biomes in China.SCIENCE OF THE TOTAL ENVIRONMENT,923.
MLA	An, Nannan,et al."Plant size traits are key contributors in the spatial variation of net primary productivity across terrestrial biomes in China".SCIENCE OF THE TOTAL ENVIRONMENT 923(2024).