Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain

doi:10.3390/agronomy10122004

	Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain
	Du, Kun 1,2,3; Li, Fadong 1,2,3; Leng, Peifang 1,2,3; Li, Zhao 1,2,3; Tian, Chao 1,2,3; Qiao, Yunfeng 1,2,3; Li, Zhaoxin 1,2,3
刊名	AGRONOMY-BASEL
	2020-12-01
卷号	10 期号:12 页码:12
关键词	soil respiration components precipitation no-tillage automatic chamber maize North China Plain
DOI	10.3390/agronomy10122004
通讯作者	Li, Fadong(lifadong@igsnrr.ac.cn)
英文摘要	It is important to strengthen the studies on the response of soil respiration components to tillage practices and natural precipitation in cropland. Therefore, soil heterotrophic respiration (R-H) and autotrophic (R-A) respiration were monitored by a root exclusion method in the North China Plain (NCP). The tillage practices included no-tillage (NT) and conventional tillage (CT), and the study periods were the summer maize growth stages in 2018 and 2019. R-H, R-A, soil water content and temperature were measured continuously for 113 days by an automatic sampling and analysis system. The soil R-H values on bright days and rain-affected days were higher under NT in 2018 (14.22 and 15.06 g CO2 m(-2) d(-1), respectively) than in 2019 (8.25 and 13.30 g CO2 m(-2) d(-1), respectively). However, the R-A values on bright days and rain-affected days were lower under NT in 2018 (4.74 and 4.97 g CO2 m(-2) d(-1), respectively) than in 2019 (5.67 and 6.93 g CO2 m(-2) d(-1), respectively). Moreover, NT decreased R-H but increased R-A compared to CT in 2019. Compared to bright days, the largest increase in both R-H and R-A after rain pulses was under CT in 2019 (6.75 and 1.80 g CO2 m(-2) d(-1), respectively). Soil water content and soil temperature were higher in 2018 than in 2019. Moreover, NT increased soil water content and decreased soil temperature on bright days compared to CT in 2019. Furthermore, soil temperature accounted for more variations in R-H on bright days and rain-affected days, but soil water content had a greater influence on R-A on bright days. However, after precipitation, higher soil water content decreased R-A under NT in 2018, while soil water content was positively related to R-A under CT in 2019. This study determined the differential response of R-H and R-A to tillage practices and natural precipitation pulses, and we confirmed that excessively dry soil increases soil carbon loss after rain events in the NCP.
资助项目	National Natural Science Foundation of China[41771292] ; National Natural Science Foundation of China[U1906219] ; National Natural Science Foundation of China[31170414] ; United Nations Environment Programme[41761144053]
WOS关键词	GREENHOUSE-GAS FLUXES ; LONG-TERM TILLAGE ; CARBON-DIOXIDE ; CO2 EMISSION ; NITROGEN-FERTILIZATION ; ECOSYSTEM RESPIRATION ; EDDY COVARIANCE ; WATER-UPTAKE ; STRAW MULCH ; CHAMBER
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	MDPI
WOS记录号	WOS:000602265400001
资助机构	National Natural Science Foundation of China ; United Nations Environment Programme
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137750]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Fadong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Minist Sci & Technol, Yucheng Shandong Agroecosyst Natl Observat & Res, Yucheng 251200, Peoples R China
推荐引用方式 GB/T 7714	Du, Kun,Li, Fadong,Leng, Peifang,et al. Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain[J]. AGRONOMY-BASEL,2020,10(12):12.
APA	Du, Kun.,Li, Fadong.,Leng, Peifang.,Li, Zhao.,Tian, Chao.,...&Li, Zhaoxin.(2020).Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain.AGRONOMY-BASEL,10(12),12.
MLA	Du, Kun,et al."Differential Influence of No-Tillage and Precipitation Pulses on Soil Heterotrophic and Autotrophic Respiration of Summer Maize in the North China Plain".AGRONOMY-BASEL 10.12(2020):12.