干旱区生态环境知识资源中心(Arid): Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China

Arid

	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
来源期刊	干旱区科学
ISSN	1674-6767
出版年	2021
卷号	13 期号:3 页码:1674-6767
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.
英文关键词	precipitation gradient soil layer soil bacterial community structure diversity co-occurrence pattern
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6955763
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365038
作者单位	Teng Zeyu, Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences;;, Lanzhou;;, ;;Beijing 730000;;100049.; Han Chao, Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences;;University of Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences;;, Lanzhou;;, ;;Beijing 730000;;100049.; Xiao Shengchun, Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences, Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Chen Xiaohong, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou, Gansu 730000, 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],2021,13(3):1674-6767.
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.干旱区科学,13(3),1674-6767.
MLA	Teng Zeyu,et al."Soil bacterial characteristics between surface and subsurface soils along a precipitation gradient in the Alxa Desert, China".干旱区科学 13.3(2021):1674-6767.