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DOI	10.1016/j.catena.2021.105470
	Changes of soil bacterial and fungal community structure along a natural aridity gradient in desert grassland ecosystems, Inner Mongolia
	Wang, Shaokun; Zuo, Xiaoan; Awada, Tala; Medima-Roldan, Eduardo; Feng, Keting; Yue, Ping; Lian, Jie; Zhao, Shenglong; Cheng, Huan
通讯作者	Wang, SK ; Zuo, XA (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0341-8162
EISSN	1872-6887
卷号	205
英文摘要	Environmental aridity is increasing in several regions around the globe due to climate change. However, little is known about microbial diversity and community responses to aridity along grassland-to-desert gradients. We investigated soil bacterial and fungal diversity and composition, and associated environmental factors along an aridity gradient across grassland (G), desert-grassland (DG) and desert (D) in Inner Mongolia, Northern China. The results indicate that soil microbial diversity decreased significantly from G and DG to D. Bacteria were mostly dominated by the universal phyla Proteobacteria, Actinobacteria, Bacteroidetes and Acidobacteria. Fungal communities were dominated only by Ascomycota. Most bacterial species (58.7-69.1%) were found in all habitats with significant differences among the three vegetation types, while most soil fungal species occupied small geographic areas. Soil bacterial communities adapted to environmental changes through changes in proportions of their taxa, while fungi changed their rare taxa in response to the differences in local environments. Canonical correspondence analysis (CCA) indicated that soil C:N, salinity and regional temperature were the most important factors regulating microbial community composition. Structural equation models (SEM) revealed that C:N was the most important factor directly influencing soil microbial diversity, and SPEI was the most important factor indirectly influencing soil microbial diversity in the Mongolian desert-grassland ecosystem. Our results provide evidence that soil bacterial and fungal communities respond differently to the changes in the biotic and abiotic factors, reflecting different adaptive strategies for coping with climate change in desert grassland ecosystems.
关键词	MICROBIAL COMMUNITIES FUNCTIONAL DIVERSITY PLANT DIVERSITY BETA VEGETATION PRECIPITATION RESPONSES RAINFALL NITROGEN DRIVERS
英文关键词	Soil microbial community; Alpha and beta diversity; Environmental factors; Aridity gradient; Desert grassland
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000659891800016
来源期刊	CATENA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254117
作者单位	[Wang, Shaokun; Zuo, Xiaoan; Feng, Keting; Yue, Ping; Lian, Jie; Zhao, Shenglong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Urat Desert Grassland Res Stn, Lanzhou 730000, Peoples R China; [Awada, Tala] Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA; [Medima-Roldan, Eduardo] Xian Jiaotong Liverpoll Univ, Hlth & Environm Sci, Suzhou 215123, Peoples R China; [Cheng, Huan] Sichuan Agr Univ, Coll Forestry, Chengdu 611130, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shaokun,Zuo, Xiaoan,Awada, Tala,et al. Changes of soil bacterial and fungal community structure along a natural aridity gradient in desert grassland ecosystems, Inner Mongolia[J]. 中国科学院西北生态环境资源研究院,2021,205.
APA	Wang, Shaokun.,Zuo, Xiaoan.,Awada, Tala.,Medima-Roldan, Eduardo.,Feng, Keting.,...&Cheng, Huan.(2021).Changes of soil bacterial and fungal community structure along a natural aridity gradient in desert grassland ecosystems, Inner Mongolia.CATENA,205.
MLA	Wang, Shaokun,et al."Changes of soil bacterial and fungal community structure along a natural aridity gradient in desert grassland ecosystems, Inner Mongolia".CATENA 205(2021).