Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau

doi:10.1016/j.agee.2016.11.020

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Carbon dioxide fluxes in soil profiles as affected by maize phenology and nitrogen fertilization in the semiarid Loess Plateau
	Yao, Pengwei 1,2; Li, Xiaosha 3; Nan, Weige 1,2; Li, Xiuyun(3; Zhang, Hongpei 3; Shen, Yufang 1,2; Li, Shiqing 1,2; Yue, Shanchao 1,2; 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.
文章类型	Article
	2017
发表期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
通讯作者邮箱	sqli@ms.iswc.ac.cn ; yueshanchao@ms.iswc.ac.cn
卷号	236 页码:120-133
摘要	To 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.
关键词	Greenhouse Gas Co2 Concentration Gradient Plant-derived Co2 Dry Land
学科领域	Agriculture ; Environmental Sciences & Ecology
DOI	10.1016/j.agee.2016.11.020
URL	查看原文
收录类别	SCI
出版地	AMSTERDAM
语种	英语
WOS记录号	WOS:000392886700013
出版者	ELSEVIER SCIENCE BV
项目资助者	National 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]
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/8054
专题	水保所科研产出--SCI_2017--SCI
通讯作者	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.
作者单位	1.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
推荐引用方式 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.