Influences of drip and flood irrigation on soil carbon dioxide emission and soil carbon sequestration of maize cropland in the North China Plain

doi:10.1007/s40333-017-0011-9

	Influences of drip and flood irrigation on soil carbon dioxide emission and soil carbon sequestration of maize cropland in the North China Plain
	Guo Shufang; Qi Yuchun; Peng Qin; Dong Yunshe; He Yunlong; Yan Zhongqing; Wang Liqin
刊名	JOURNAL OF ARID LAND
	2017-04-01
卷号	9 期号:2 页码:222-233
关键词	drip irrigation flood irrigation spatio-temporal variation carbon dioxide soil organic carbon North China Plain
ISSN号	1674-6767
DOI	10.1007/s40333-017-0011-9
通讯作者	Dong Yunshe(dongys@igsnrr.ac.cn)
英文摘要	The need is pressing to investigate soil CO2 (carbon dioxide) emissions and soil organic carbon dynamics under water-saving irrigation practices in agricultural systems for exploring the potentials of soil carbon sequestration. A field experiment was conducted to compare the influences of drip irrigation (DI) and flood irrigation (FI) on soil organic carbon dynamics and the spatial and temporal variations in CO2 emissions during the summer maize growing season in the North China Plain using the static closed chamber method. The mean CO2 efflux over the growing season was larger under DI than that under FI. The cumulative CO2 emissions at the field scale were 1959.10 and 1759.12 g/m(2) under DI and FI, respectively. The cumulative CO2 emission on plant rows (OR) was larger than that between plant rows (BR) under FI, and the cumulative CO2 emission on the irrigation pipes (OP) was larger than that between irrigation pipes (BP) under DI. The cumulative CO2 emissions of OP, BP and bare area (BA) under DI were larger than those of OR, BR and BA under FI, respectively. Additionally, DI promoted root respiration more effectively than FI did. The average proportion of root respiration contributing to the soil CO2 emissions of OP under DI was larger than that of OR under FI. A general conclusion drawn from this study is that soil CO2 emission was significantly influenced by the soil water content, soil temperature and air temperature under both DI and FI. Larger concentrations of dissolved organic carbon (DOC), microbial biomass carbon (MBC) and total organic carbon (TOC) were observed under FI than those under DI. The observed high concentrations (DOC, MBC, and TOC) under FI might be resulted from the irrigation-associated soil saturation that in turn inhibited microbial activity and lowered decomposition rate of soil organic matter. However, DI increased the soil organic matter quality (the ratio of MBC to TOC) at the depth of 10-20 cm compared with FI. Our results suggest that the transformation from conventional FI to integrated DI can increase the CO2 emissions and DI needs to be combined with other management practices to reduce the CO2 emissions from summer maize fields in the North China Plain.
资助项目	Special Fund for Agro-scientific Research[201203012] ; National Natural Science Foundation of China[41373084] ; National Natural Science Foundation of China[41330528] ; National Natural Science Foundation of China[41203054]
WOS关键词	SPATIAL-TEMPORAL VARIATION ; DISSOLVED ORGANIC-CARBON ; WATER-USE EFFICIENCY ; MICROBIAL BIOMASS ; CO2 EFFLUX ; WINTER-WHEAT ; OXIDE EMISSIONS ; PINE PLANTATION ; INNER-MONGOLIA ; COTTON FIELD
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000396210500006
资助机构	Special Fund for Agro-scientific Research ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/64607]
专题	中国科学院地理科学与资源研究所
通讯作者	Dong Yunshe
作者单位	Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Guo Shufang,Qi Yuchun,Peng Qin,et al. Influences of drip and flood irrigation on soil carbon dioxide emission and soil carbon sequestration of maize cropland in the North China Plain[J]. JOURNAL OF ARID LAND,2017,9(2):222-233.
APA	Guo Shufang.,Qi Yuchun.,Peng Qin.,Dong Yunshe.,He Yunlong.,...&Wang Liqin.(2017).Influences of drip and flood irrigation on soil carbon dioxide emission and soil carbon sequestration of maize cropland in the North China Plain.JOURNAL OF ARID LAND,9(2),222-233.
MLA	Guo Shufang,et al."Influences of drip and flood irrigation on soil carbon dioxide emission and soil carbon sequestration of maize cropland in the North China Plain".JOURNAL OF ARID LAND 9.2(2017):222-233.