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The persistence of bacterial diversity and ecosystem multifunctionality along a disturbance intensity gradient in karst soil
Xue, Yafang1,2,3; Tian, Jing1,2,3; Quine, Timothy A.4; Powlson, David5; Xing, Kaixiong2; Yang, Liyang1; Kuzyakov, Yakov6,7,8; Dungait, Jennifer A. J.4
2020-12-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume748Pages:13
Corresponding AuthorTian, Jing(tianj@igsnrr.ac.cn)
AbstractExtensive, progressive rock emergence causes localized variations in soil biogeochemical and microbial properties that may influence the capacity for the regeneration of degraded karst ecosystems. It is likely that karst ecosystem recovery relies on the persistence of soil functions at the microbial scale, and we aimed to explored the role of interactions between soil bacterial taxa and identify keystone species that deliver key biogeochemical functions, i.e. carbon (C) and nutrient (nitrogen, N and phosphorus, P) cycling. We applied high-throughput sequencing and phylogenetic molecular ecological network approaches to topsoils sampled at rock-soil interfaces and adjacent bulk soil along an established gradient of land-use intensity in the Chinese Karst Critical Zone Observatory. Bacterial a-diversity was greater under increased perturbation and at the rock-soil interface compared to bulk soils under intensive cultivation. However, bacterial ecological networks were less intricate and connected fewer keystone taxa as human disturbance increased and at the rock-soil interface. Co-occurrence within the bacterial community in natural primary forest soils was 13% larger than cultivated soils. The relative abundances of keystone taxa Acidobacteria, Bacteroidetes and Chloroflexi increased with land-use intensity, while Proteobacteria, Actinobacteria and Verrucomicrobia decreased by up to 6%. In general, Bacteroidetes, Verrucomicrobia and Chlorobiwere related to C-cycling, Proteobacteria, Actinobacteria and Chloroflexiwere related to N-cycling, and Actinobacteria and Nitrospirae were related to both N- and P-cycling. Proteobacteria and Chlorobi affected C-cycling and multiple functionality indexes in the abandoned land. We conclude that increasing land-use intensity changed the soil bacterial community structure and decreased bacterial interactions. However, increases in a-diversity at the rock-soil interface in cultivated soils indicated that major soil functions related to biogeochemical cycling were maintained within keystone taxa in this microenvironment. Our study provides foundations to test the success of different regeneration practices in restoring soil microbial diversity and the multifunctionality of karst ecosystems. (c) 2020 Elsevier B.V. All rights reserved.
KeywordKarst Disturbance intensity Rock outcrop Bacterial community Bacterial interactions Ecosystem multifunctionality
DOI10.1016/j.scitotenv.2020.142381
WOS KeywordMICROBIAL COMMUNITY STRUCTURE ; LAND-USE CHANGE ; CATALYTIC EFFICIENCY ; FUNGAL DIVERSITY ; PLANT DIVERSITY ; ENZYME-ACTIVITY ; FOREST ; AVAILABILITY ; RHIZOSPHERE ; SUCCESSION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41571130041] ; National Natural Science Foundation of China[31770560] ; National Natural Science Foundation of China[2017YFA0604803] ; National Environmental Research Council of the UK ; Newton Foundation[NE/N007603/1]
Funding OrganizationNational Natural Science Foundation of China ; National Environmental Research Council of the UK ; Newton Foundation
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000581049800122
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/156812
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTian, Jing
Affiliation1.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing 100193, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
4.Univ Exeter, Coll Life & Environm Sci, Geog, Rennes Dr, Exeter EX4 4RJ, Devon, England
5.Rothamsted Res, Dept Sustainable Agr Sci, Harpenden AL5 2JQ, Herts, England
6.Univ Gottingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany
7.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
8.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
Recommended Citation
GB/T 7714
Xue, Yafang,Tian, Jing,Quine, Timothy A.,et al. The persistence of bacterial diversity and ecosystem multifunctionality along a disturbance intensity gradient in karst soil[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,748:13.
APA Xue, Yafang.,Tian, Jing.,Quine, Timothy A..,Powlson, David.,Xing, Kaixiong.,...&Dungait, Jennifer A. J..(2020).The persistence of bacterial diversity and ecosystem multifunctionality along a disturbance intensity gradient in karst soil.SCIENCE OF THE TOTAL ENVIRONMENT,748,13.
MLA Xue, Yafang,et al."The persistence of bacterial diversity and ecosystem multifunctionality along a disturbance intensity gradient in karst soil".SCIENCE OF THE TOTAL ENVIRONMENT 748(2020):13.
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