Effects of agricultural management regimes on rotating cropland ecosystem respiration and its components in Southeast China

doi:10.1016/j.agrformet.2021.108580

	Effects of agricultural management regimes on rotating cropland ecosystem respiration and its components in Southeast China
	Chen, Shutao 1; Zhu, Dawei 2; Lu, Yanyu 3; Hu, Zhenghua ; Sun, Wenjuan 4
	2021
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
卷号	308
摘要	Investigating ecosystem, soil and aboveground respiration under different agricultural management regimes (i.e., fertilization, crop types and plowing practices) is critical for better understanding the processes of agricultural carbon cycles. The effects of agricultural management regimes on ecosystem respiration and its soil and aboveground respiration components have not been well identified. We performed a field experiment to measure ecosystem and soil respiration under different management regimes. Air temperature, soil temperature, soil moisture, crop growth characteristics [aboveground biomass (AB), leaf biomass (LB), leaf area index (LAI), specific leaf area (SLA), plant height (PH)] and crop productivity indexes [i.e., yield and biomass of a thousand seeds (BTS)] were also measured. The WrP4 treatment, where nitrogen was applied as chemical fertilizer and straw, had significantly (P < 0.05) higher seasonal cumulative ecosystem respiration (SCER) than the treatments where only chemical nitrogen was applied. Rice paddies had significantly (P < 0.05) lower SCER and seasonal cumulative soil respiration (SCSR) than upland plots during the 2003 summer growing season. No-till treatment significantly (P < 0.05) increased the SCER compared with plowing treatment. Plowing practices had different effects on the SCSR in the different growing seasons. The highest annual ecosystem respiration during the 2002-2003 and 2003-2004 rotation years was higher than that in previous studies that used the eddy covariance (EC) technique in croplands. The percentage of soil to ecosystem respiration varied from 31% to 81% across treatments. The SCER across treatments during the winter wheat growing seasons was significantly (P < 0.05) correlated with temperature, maximum aboveground biomass (MAB), maximum leaf biomass (MLB), maximum specific leaf area (MSLA) and BTS. Seasonal variations in ecosystem and soil respiration could be modelled by temperature, moisture, AB, LAI and PH. Moreover, the aboveground respiration coefficient decreased with increasing LAI and PH in the winter wheat, maize and rice plots.
关键词	Ecosystem respiration Soil respiration Aboveground respiration Agricultural management regimes Aboveground biomass Leaf area index
学科领域	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
DOI	10.1016/j.agrformet.2021.108580
收录类别	SCI
语种	英语
WOS关键词	CARBON-DIOXIDE EXCHANGE ; LAND-USE CHANGE ; SOIL RESPIRATION ; EDDY-COVARIANCE ; CO2 FLUXES ; SHORT-TERM ; HETEROTROPHIC RESPIRATION ; TEMPERATURE SENSITIVITY ; MICROBIAL CONTRIBUTIONS ; DRIVING TEMPERATURE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000692679900041
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1873-2240
资助机构	National Natural Science Foundation of China [NSFC 41775151, 41775152]
作者邮箱	chenstyf@aliyun.com
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26748
专题	植被与环境变化国家重点实验室
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing, Peoples R China 2.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Peoples R China 3.Jiangsu Acad Agr Sci, Nanjing, Peoples R China 4.Anhui Climate Ctr, Hefei, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shutao,Zhu, Dawei,Lu, Yanyu,et al. Effects of agricultural management regimes on rotating cropland ecosystem respiration and its components in Southeast China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,308.
APA	Chen, Shutao,Zhu, Dawei,Lu, Yanyu,Hu, Zhenghua,&Sun, Wenjuan.(2021).Effects of agricultural management regimes on rotating cropland ecosystem respiration and its components in Southeast China.AGRICULTURAL AND FOREST METEOROLOGY,308.
MLA	Chen, Shutao,et al."Effects of agricultural management regimes on rotating cropland ecosystem respiration and its components in Southeast China".AGRICULTURAL AND FOREST METEOROLOGY 308(2021).

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