Divergent responses of soil fungal communities to soil erosion and deposition as evidenced in topsoil and subsoil

doi:10.1016/j.scitotenv.2020.142616

	Divergent responses of soil fungal communities to soil erosion and deposition as evidenced in topsoil and subsoil
	Du, Lanlan 1,2; Guo, Shengli 1,2,3; Gao, Xin 3; Li, Weijia 3; Li, Xiaogang 3; Hou, Fangbin 3; Wang, Rui 3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-02-10
卷号	755 页码:11
关键词	Eroding slope Depositional zone Chinese loess plateau
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.142616
通讯作者	Wang, Rui(ruiwang0212@126.com)
英文摘要	Despite the pivotal functional roles dominating the pace of nutrient cycles in terrestrial ecosystems, soil fungal communities at erosional and depositional sites have not been comparatively investigated when assessing the ecosystem stability of eroding landscapes. In this study, soil fungal communities in topsoil (0-5 cm) and subsoil (5-10 cm) on simulated eroding slopes of three slope gradients, i.e., 5 degrees, 10 degrees, and 20 degrees, and in the corresponding depositional zones were examined from 2015 to 2017 in the region of the Chinese Loess Plateau. The results showed that, compared with that in the 5 degrees reference slopes, soil fungal richness in the topsoil and subsoil of the 10 degrees and 20 degrees eroding slopes was 11.8-24.9% lower. However, the richness increased by 2.3-22.7% in the subsoil of the depositional zones, yet not in the topsoil. Soil fungal community compositions in both topsoil and subsoil differed between depositional zones and reference slopes but not between eroding slopes and reference slopes. The differentiation of fungal richness and community compositions between eroding slopes and depositional zones increased with slope gradients, regardless of the topsoil and the subsoil. Saprotrophic fungi levels were 22.5-48.0% lower and pathogenic fungi were 45.2-193.3% higher in the subsoil of the depositional zones with 10 degrees and 20 degrees slopes than in the subsoil of the 5 degrees reference slopes. Soil fungal network on the eroding slope was more complex than that in the depositional zone, suggesting more extensive interactions of fungal taxa and higher community stability potential on eroding slopes. The decreasing soil moisture, organic matter, and other properties on the eroding slopes, in contrast with these properties increasing in the depositional zones, were responsible for the variations in fungal richness and community composition. The divergent responses of soil fungal communities to soil erosion and deposition emphasized the complexity and variability of fungal communities during the soil erosion-deposition processes. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41371279]
WOS关键词	ORGANIC-MATTER DECOMPOSITION ; MICROBIAL RESPONSES ; BACTERIAL COMMUNITIES ; NETWORK ANALYSIS ; WATER EROSION ; LOESS PLATEAU ; CARBON ; DIVERSITY ; SEQUESTRATION ; RESTORATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000600786700043
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136639]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Rui
作者单位	1.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 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,Guo, Shengli,Gao, Xin,et al. Divergent responses of soil fungal communities to soil erosion and deposition as evidenced in topsoil and subsoil[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,755:11.
APA	Du, Lanlan.,Guo, Shengli.,Gao, Xin.,Li, Weijia.,Li, Xiaogang.,...&Wang, Rui.(2021).Divergent responses of soil fungal communities to soil erosion and deposition as evidenced in topsoil and subsoil.SCIENCE OF THE TOTAL ENVIRONMENT,755,11.
MLA	Du, Lanlan,et al."Divergent responses of soil fungal communities to soil erosion and deposition as evidenced in topsoil and subsoil".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021):11.