气候变化领域集成服务门户(CCPortal): Habitat-specific environmental factors regulate the spatial variability of biological soil crust microbial communities on the Qinghai-Tibet Plateau

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DOI	10.1016/j.scitotenv.2023.165937
	Habitat-specific environmental factors regulate the spatial variability of biological soil crust microbial communities on the Qinghai-Tibet Plateau
	Ding, Yuang; Geng, Yuchen; Zhou, Weicheng; Li, Dunhai
发表日期	2023
ISSN	0048-9697
EISSN	1879-1026
卷号	901
英文摘要	Biological soil crusts (BSCs) are an important biological component of the soil surface, covering approximately 12 % of the Earth's land surface. Although BSCs are closely related to habitats, the microbial diversity and spatial variability of BSCs in different ecosystems are still unclear, especially on the Qinghai-Tibet Plateau (QTP), where climate is changeable and habitats are complex. Here, we investigated the diversity, assembly processes, spatial distribution pattern and driving factors of prokaryotic and eukaryotic microbial communities in BSCs in four habitats on the QTP. It was found that habitat-specific environmental factors regulated the composition, diversity and spatial variability of BSC microbial communities. Soil organic carbon and soil water content were the most important factors (R2 = 0.9024, P = 0.001; R2 = 0.8004, P = 0.001) affecting the spatial differences in pro-karyotes and eukaryotes, respectively. Under the specific climate of the QTP, the spatial pattern of microbial communities in BSCs was controlled by precipitation rather than temperature. In addition, ecological processes further explained the effects of habitat specificity, and environmental filtering explained microbial community differences better than dispersal limitation. The results of the neutral community model and the normalized stochastic ratio index revealed that the assembly of prokaryotic communities was determined by deterministic processes at the regional scale, and at the local scale, the assembly process was mainly determined by habitat type, while the assembly of eukaryotic communities was determined by stochastic processes at both the regional and local scales. This study provided a scientific reference for the prediction of BSC distribution and resource conservation under future climate change scenarios.
关键词	Qinghai-Tibet Plateau Biological soil crust Microbial community Biogeographic distribution Community assembly
英文关键词	BETA-DIVERSITY; BACTERIAL; VEGETATION; GRASSLAND; PATTERNS
WOS研究方向	Environmental Sciences
WOS记录号	WOS:001053008500001
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/282786
作者单位	Tibet University; Chinese Academy of Sciences; Institute of Hydrobiology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Xiangnan University
推荐引用方式 GB/T 7714	Ding, Yuang,Geng, Yuchen,Zhou, Weicheng,et al. Habitat-specific environmental factors regulate the spatial variability of biological soil crust microbial communities on the Qinghai-Tibet Plateau[J],2023,901.
APA	Ding, Yuang,Geng, Yuchen,Zhou, Weicheng,&Li, Dunhai.(2023).Habitat-specific environmental factors regulate the spatial variability of biological soil crust microbial communities on the Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,901.
MLA	Ding, Yuang,et al."Habitat-specific environmental factors regulate the spatial variability of biological soil crust microbial communities on the Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 901(2023).