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

文献类型：期刊论文

作者Chen, Shutao3; Zhu, Dawei4; Lu, Yanyu1; Hu, Zhenghua; Sun, Wenjuan5
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2021
卷号308
关键词Ecosystem respiration Soil respiration Aboveground respiration Agricultural management regimes Aboveground biomass Leaf area index
ISSN号0168-1923
DOI10.1016/j.agrformet.2021.108580
文献子类Article
英文摘要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.
学科主题Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
出版地AMSTERDAM
电子版国际标准刊号1873-2240
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)
语种英语
WOS记录号WOS:000692679900041
出版者ELSEVIER
资助机构National Natural Science Foundation of China [NSFC 41775151, 41775152]
源URL[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.Jiangsu Acad Agr Sci, Nanjing, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
3.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing, Peoples R China
4.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Peoples R China
5.Anhui Climate Ctr, Hefei, 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).

入库方式： OAI收割

来源：植物研究所

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