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Soil prokaryotic community structure and co-occurrence patterns on the fragmented Chinese Loess Plateau: Effects of topographic units of a soil eroding catena

文献类型：期刊论文

作者Wang, Rui1,2; Hu, Yaxian1,2; Khan, Asif1; Du, Lanlan2; Wang, Ying1,2; Hou, Fangbin1; Guo, Shengli1,2
刊名CATENA
出版日期2021-03-01
卷号198页码:9
关键词Soil prokaryotes diversity Soil prokaryotes function Co-occurrences Nutrient content Soil-eroding catena
ISSN号0341-8162
DOI10.1016/j.catena.2020.105035
通讯作者Guo, Shengli(slguo@ms.iswc.ac.cn)
英文摘要Soil prokaryotes composition and diversity are the key to uncovering the mechanisms that drive variations in soil biogeochemical processes. Soil erosion is a primary factor that affects the spatial distribution of the soil prokaryotic community, but how soil prokaryotes in soil-eroding catena respond to environmental factors related to topography remains largely unclear. In this study, topsoils were sampled from three typical erosion geomorphic units (autonomous, transitional and depositional zones) in 2018 to identify the soil prokaryotic community and interactions among the species on the Chinese Loess Plateau. The alpha-diversity was greater but the betadiversity was lower in the autonomous and transitional zones than in the depositional zone. Gammaproteobacteria and Bacteroidetes were 73% and 68% lower in the autonomous and transitional zones than in the depositional zone. In addition, Deltaproteobacteria, Acidobacteria, Firmicutes, Actinobacteria, Chloroflexi, Gemmatimonadetes and Nitrospirae were significantly higher in the autonomous and transitional zones. A less clustered network and fewer co-occurrences within the prokaryotic community and functional groups of processes were found in the depositional zone than in the autonomous and transitional zones. The alpha-diversity index was significantly negatively correlated with clay particles, soil water content, soil organic carbon (SOC), and ratio of SOC and nitrogen (C/N) but positively correlated with total nitrogen (TN). The higher relative abundances of copiotrophic groups (including Gammaproteobacteria, Bacteroidetes, etc.) in the depositional zone was mainly due to the increased SOC caused by the deposition of SOC-rich clay. Reassembly of the soil physico-chemistry characteristics among the topographic units significantly altered the soil prokaryotic community along the soil-eroding catena.
WOS关键词ORGANIC-CARBON ; BACTERIAL COMMUNITIES ; LAND-USE ; MICROBIAL COMMUNITIES ; NETWORK ANALYSIS ; BETA-DIVERSITY ; USE EFFICIENCY ; DYNAMICS ; EROSION ; DECOMPOSITION
资助项目National Key Research and Development Program of China[2016YFD0800105] ; China Postdoctoral Science Foundation[2018M643755]
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:000605337000054
出版者ELSEVIER
资助机构National Key Research and Development Program of China ; China Postdoctoral Science Foundation
源URL[http://ir.igsnrr.ac.cn/handle/311030/136433]  
专题中国科学院地理科学与资源研究所
通讯作者Guo, Shengli
作者单位1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Rui,Hu, Yaxian,Khan, Asif,et al. Soil prokaryotic community structure and co-occurrence patterns on the fragmented Chinese Loess Plateau: Effects of topographic units of a soil eroding catena[J]. CATENA,2021,198:9.
APA Wang, Rui.,Hu, Yaxian.,Khan, Asif.,Du, Lanlan.,Wang, Ying.,...&Guo, Shengli.(2021).Soil prokaryotic community structure and co-occurrence patterns on the fragmented Chinese Loess Plateau: Effects of topographic units of a soil eroding catena.CATENA,198,9.
MLA Wang, Rui,et al."Soil prokaryotic community structure and co-occurrence patterns on the fragmented Chinese Loess Plateau: Effects of topographic units of a soil eroding catena".CATENA 198(2021):9.

入库方式： OAI收割

来源：地理科学与资源研究所

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