Divergent responses of soil bacterial communities in erosion-deposition plots on the Loess Plateau

doi:10.1016/j.geoderma.2019.113995

	Divergent responses of soil bacterial communities in erosion-deposition plots on the Loess Plateau
	Du, Lanlan 1,2; Wang, Rui 3; Gao, Xin 3; Hu, Yaxian 3; Guo, Shengli 1,2,3
刊名	GEODERMA
	2020-01-15
卷号	358 页码:11
关键词	Soil erosion Soil deposition Slope gradients Soil bacterial communities Loess Plateau
ISSN号	0016-7061
DOI	10.1016/j.geoderma.2019.113995
通讯作者	Guo, Shengli(slguo@ms.iswc.ac.cn)
英文摘要	Soil erosion and deposition occur widely from regional to global scales and have profound impacts on ecological services and sustainability. Despite their crucial roles in biogeochemical cycles, the responses of soil bacterial communities to soil erosion and deposition remain largely unclear. In this study, a field simulation experiment was conducted to examine variation in soil bacterial communities across eroding slopes and depositional zones with three slope gradients (5 degrees, 10 degrees and 20 degrees) on the Loess Plateau of China (2015-2017). The results showed that soil physicochemical properties were altered by redistribution of runoff and sediment across eroding slopes and depositional zones. Soil bacterial alpha diversity was higher in the depositional zones of both 10 degrees and 20 degrees slopes compared with the 5 degrees reference slopes but no markedly difference was found between eroding slopes and reference slopes. By contrast, bacterial community structure differed between eroding slopes and reference slopes but not between depositional zones and reference slopes. Differentiation of bacterial communities between eroding slopes and depositional zones increased with increasing slope gradients. The bacterial network was greater and more complex within depositional zone than eroding slope, indicating more extensive bacterial interactions and greater community stability potential. Erosion- and deposition-induced redistribution of soil moisture, soil organic matter, available P, and available K were the key determinants of variation in bacterial community structure. Our findings demonstrate the contrasting effects of soil erosion and deposition on soil bacterial communities, which should be given further attention across eroding landscapes.
资助项目	National Natural Science Foundation of China[41371279] ; National Natural Science Foundation of China[41701318] ; Fundamental Research Funds for the Central Universities, Northwest AF University[2452017191]
WOS关键词	ORGANIC-CARBON ; MICROBIAL DIVERSITY ; FUNGAL COMMUNITIES ; NETWORK ANALYSIS ; SHEET EROSION ; MATTER ; TRANSPORT ; GRADIENT ; DECOMPOSITION ; INTENSITY
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000498331600004
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, Northwest AF University
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/130271]
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.Chinese Acad Sci & Minist Water Resources, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Du, Lanlan,Wang, Rui,Gao, Xin,et al. Divergent responses of soil bacterial communities in erosion-deposition plots on the Loess Plateau[J]. GEODERMA,2020,358:11.
APA	Du, Lanlan,Wang, Rui,Gao, Xin,Hu, Yaxian,&Guo, Shengli.(2020).Divergent responses of soil bacterial communities in erosion-deposition plots on the Loess Plateau.GEODERMA,358,11.
MLA	Du, Lanlan,et al."Divergent responses of soil bacterial communities in erosion-deposition plots on the Loess Plateau".GEODERMA 358(2020):11.