气候变化领域集成服务门户(CCPortal): Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China

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DOI	10.1007/s40333-021-0004-6
	Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China
	Teng Zeyu; Xiao Shengchun; Chen Xiaohong; Han Chao
通讯作者	Teng, ZY (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1674-6767
EISSN	2194-7783
起始页码	257
结束页码	273
卷号	13 期号:3
英文摘要	Bacteria in desert soil have unique phylogeny and important ecological functions, and their responses to changes in precipitation need further attention. However, relevant studies have mainly focused on the surface soil, and studies on the responses of bacteria at different soil depths to variations in precipitation are rare. Thus, we used 16S rDNA high-throughput sequencing to investigate the changes in soil bacterial distribution along a mean annual precipitation gradient (50-150 mm) in the Alxa Desert, China, and compared the variation characteristics in the surface soil layer (0-10 cm) and subsurface soil layer (10-20 cm). Results showed that soil bacterial communities significantly changed along the precipitation gradient in both soil layers. However, the subsurface soil layer could support bacterial communities with higher diversity and closer internal relationships but more internal competition than the surface soil layer. Additionally, compared with the surface soil layer, variations in diversity and co-occurrence patterns in the subsurface soil layer were more in line with the changes in the mean annual precipitation, while bacterial community structure was less variable in the subsurface soil layer. Compared with the mean annual precipitation, soil moisture had little influence on the structure and diversity of soil bacterial community but had a high correlation with intercommunity connectivity. Therefore, soil moisture might play a complex role in mediating environmental conditions and soil bacterial community characteristics. Due to the different responses of surface and subsurface soil bacteria to the changes in precipitation, it is necessary to distinguish different soil layers when predicting the trends in desert soil bacterial conditions associated with precipitation, and prediction of subsurface soil bacteria may be more accurate.
关键词	MICROBIAL COMMUNITY STRUCTURE VERTICAL-DISTRIBUTION DIVERSITY RESPONSES MOISTURE DROUGHT CLIMATE VARIABILITY POPULATION ABUNDANCE
英文关键词	precipitation gradient; soil layer; soil bacterial community structure; diversity; co-occurrence pattern
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000673921300004
来源期刊	JOURNAL OF ARID LAND
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/253622
作者单位	[Teng Zeyu; Xiao Shengchun; Han Chao] Chinese Acad Sci, Northwest Inst Ecoenvironm Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Teng Zeyu; Han Chao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chen Xiaohong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Teng Zeyu,Xiao Shengchun,Chen Xiaohong,et al. Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China[J]. 中国科学院西北生态环境资源研究院,2021,13(3).
APA	Teng Zeyu,Xiao Shengchun,Chen Xiaohong,&Han Chao.(2021).Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China.JOURNAL OF ARID LAND,13(3).
MLA	Teng Zeyu,et al."Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China".JOURNAL OF ARID LAND 13.3(2021).