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Effects of elevated CO2 and drought on the microbial biomass and enzymatic activities in the rhizospheres of two grass species in Chinese loess soil
Xue, Sha1,2; Yang, Xiaomei2,3; Liu, Guobin1,2; Gai, Lingtong2,3; Zhang, Changsheng1,2; Ritsema, Coen J.4; Geissen, Violette4; Yang, XM (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Yang, XM (reprint author), Minist Educ, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationGEODERMA
ISSN0016-7061
description.correspondentemailxiaomei.yang@wur.nl
Volume286Pages:25-34
AbstractElevated CO2 and drought are key consequences of climate change and affect soil processes and plant growth. This study investigated the effects of elevated CO2 and drought on the microbial biomass and enzymatic activities in the rhizospheres of Bothriochloa ischaemum and Medicago sativa in loess soil. Drought exerted significant species -specific negative effects on root and shoot biomass and microbial properties except for the soil basal respiration in the rhizospheres of B. ischaemum and M. sativa. Increased CO2 exerted weak effects on plant biomass and enzymatic activities but demonstrated significant effects on the amounts of carbon and nitrogen in soil microbial biomass, basal respiration, substrate-induced respiration, and the metabolic quotients in the rhizospheres of M sativa and B. ischaemum. The rhizosphere soil microbial index was a good aggregative indicator of the general state of the microbial properties of the rhizospheres. The interactive effects of elevated CO2 and drought on plant growth and microbial properties significantly differed, indicating that elevated CO2 significantly alleviated the effects of drought stress on the microbial properties of the rhizosphere. In addition, the effects of elevated CO2 and drought on microbial biomass and enzymatic activities considerably varied between the two selected species. M. sativa generally experienced a better ameliorative effect than B. ischaemum. (C) 2016 Elsevier B.V. All rights reserved.
KeywordElevated Atmospheric Co2 Drought Stress Rhizospheric Soil Microbial Biomass Enzymatic Activities Interactive Effect
Subject AreaAgriculture
DOI10.1016/j.geoderma.2016.10.025
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000389107000004
PublisherELSEVIER SCIENCE BV
Funding OrganizationFoundation for Western Young Scholars, Chinese Academy of Sciences [XAB2015A05]; Natural Science Foundation of China [41371510, 41371508, 41471438]; Science and Technology Research and Development Program of Shaanxi Province, China [2011KJXX63] ; Foundation for Western Young Scholars, Chinese Academy of Sciences [XAB2015A05]; Natural Science Foundation of China [41371510, 41371508, 41471438]; Science and Technology Research and Development Program of Shaanxi Province, China [2011KJXX63]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8053
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorYang, XM (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Yang, XM (reprint author), Minist Educ, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Minist Educ, Yangling 712100, Shaanxi, Peoples R China
4.Wageningen Univ, Soil Phys & Land Management, POB 47, NL-6708 AA Wageningen, Netherlands
Recommended Citation
GB/T 7714
Xue, Sha,Yang, Xiaomei,Liu, Guobin,et al. Effects of elevated CO2 and drought on the microbial biomass and enzymatic activities in the rhizospheres of two grass species in Chinese loess soil[J]. GEODERMA,2017,286:25-34.
APA Xue, Sha.,Yang, Xiaomei.,Liu, Guobin.,Gai, Lingtong.,Zhang, Changsheng.,...&Yang, XM .(2017).Effects of elevated CO2 and drought on the microbial biomass and enzymatic activities in the rhizospheres of two grass species in Chinese loess soil.GEODERMA,286,25-34.
MLA Xue, Sha,et al."Effects of elevated CO2 and drought on the microbial biomass and enzymatic activities in the rhizospheres of two grass species in Chinese loess soil".GEODERMA 286(2017):25-34.
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