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Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau
Yao, Pengwei1,2; Li, Xiaosha3; Nan, Weige1,2; Li, Xiuyun(3; Zhang, Hongpei3; Shen, Yufang1,2; Li, Shiqing1,2; Yue, Shanchao1,2; Li, SQ; Yue, SC (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; Yue, SC (reprint author), Minist Water Resource, Yangling 712100, Peoples R China.
SubtypeArticle
2017
Source PublicationAGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
description.correspondentemailsqli@ms.iswc.ac.cn ; yueshanchao@ms.iswc.ac.cn
Volume236Pages:120-133
AbstractTo better understand the responses of subsoil CO2 to maize (Zea mays L) phenology and N fertilization, a field experiment was conducted from 2014 to 2015 in the Changwu Agri-Ecological Station, Shaanxi, China. The experiment included four treatments: unplanted and N-unfertilized soil (CO), unplanted soil amended with 225 kg N ha(-1) (CN), maize planted and N-unfertilized soil (PO), and maize planted soil fertilized with 225 kg N ha(-1) (PN). Soil CO2 concentration at 0-50 cm soil depth, at a resolution of 10 cm, was measured, and the CO2 effluxes were calculated using the gradient method. Soil CO2 concentrations and fluxes in the planted treatments corresponded with maize growth; they rapidly increased from the jointing stage, peaked around the milk stage, and then slowly decreased with plant maturity. CO2 concentrations and fluxes in the planted soil were significantly higher compared to those in the unplanted soil. N inputs significantly decreased (P < 0.05) the CO2 concentrations of the planted soil at depths of 10, 20, and 30 cm in 2015 and increased total CO2 fluxes of the 0-50 cm soil layers during the maize growing season by 6% (P = 0.29) in 2014 and by 18% (P < 0.01) in 2015, with the cumulative plant derived CO2 fluxes enhanced by 20% (P = 0.05) and 29% (P = 0.07), respectively. In unplanted soil, the CO2 concentrations and fluxes of the 10 cm soil layer were slightly (P > 0.05) decreased with N inputs in both years. The contributions of the plant-derived CO2 effluxes to the total CO2 effluxes of the 0-50 cm soil layers were affected by maize growth, with two year mean values of 0.49 for the PO treatment and 0.55 for the PN treatment, respectively. The results indicated that subsoil CO2 fluxes were affected by maize phenology and that application of N fertilizer enhanced subsoil CO2 effluxes mainly by increasing plant derived CO2 effluxes during the late growing season. (C) 2016 Elsevier B.V. All rights reserved.
KeywordGreenhouse Gas Co2 Concentration Gradient Plant-derived Co2 Dry Land
Subject AreaAgriculture ; Environmental Sciences & Ecology
DOI10.1016/j.agee.2016.11.020
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000392886700013
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China [41401343, 31270553, 51279197]; Ministry of Science and Technology of China [2015CB150402]; Special Fund for Agricultural Profession [201103003] ; National Natural Science Foundation of China [41401343, 31270553, 51279197]; Ministry of Science and Technology of China [2015CB150402]; Special Fund for Agricultural Profession [201103003]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8054
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorLi, SQ; Yue, SC (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; Yue, SC (reprint author), Minist Water Resource, Yangling 712100, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
2.Minist Water Resource, Yangling 712100, Peoples R China
3.Northwest A&F Univ, Coll Resources & Environm Sci, Yangling 712100, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yao, Pengwei,Li, Xiaosha,Nan, Weige,et al. Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2017,236:120-133.
APA Yao, Pengwei.,Li, Xiaosha.,Nan, Weige.,Li, Xiuyun.,Zhang, Hongpei.,...&Yue, SC .(2017).Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,236,120-133.
MLA Yao, Pengwei,et al."Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 236(2017):120-133.
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