干旱区生态环境知识资源中心(Arid): Eddy covariance measurements of carbon dioxide and water fluxes in US mid-south cotton production

Arid

DOI	10.1016/j.agee.2019.106813
	Eddy covariance measurements of carbon dioxide and water fluxes in US mid-south cotton production
	Fong, Bryant N.1; Reba, Michele L.1; Teague, Tina G.2; Runkle, Benjamin R. K.3; Suvocarev, Kosana 3
通讯作者	Reba, Michele L.
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2020
卷号	292
英文摘要	An eddy covariance (EC) system was used over a production-scale, US mid-south cotton field in order to improve understanding of carbon and water flux dynamics in cotton production. Measurement outcomes of NEE and ET from agricultural cropping systems in the humid US mid-south may differ from measurements made in arid production regions due to variation in precipitation, relative humidity, and cloud cover. Local measurements are needed for timely irrigation water management decisions and to assess their impact on the carbon cycle. Measurements were made in a 63-ha field in Northeast Arkansas in the 2016 and 2017 growing seasons (May-October). Average daily NEE during the growing season was driven largely by gross primary production (GPP) measured at -1.80 +/- 0.26 g C m(-2) d(-1) ranging between -13.5 and 2.4 g m(-2) d(-1) during 2016 and -1.97 +/- 0.26 g Cm-2 d(-1) ranging between -11.1 and 5.9 g m(-2) d(-1) during 2017. Across both years the average daily GPP during the growing season was 7.65 +/- 0.45 g C m(-2) d(-1) during 2016 and 8.33 +/- 0.37 g C m(-2) d(-1) during 2017. GPP was lowest during emergence and post-harvest and highest from the first week of flowering (FF) stage to about 3 weeks after cutout (cessation of vegetative expansion and production of new fruiting sites). Measured ET was lowest early and late in the season, and highest from FF until cutout. Across both seasons, average ET was 3.5 +/- 0.1 mm d(-1), more specifically 3.3 +/- 0.1 mm d(-1) during 2016 and 3.6 +/- 0.1 mm d(-1) during 2017. Peak water use was 7.6 mm d(-1) during both growing seasons. Measured ET values were similar to results from lysimeter studies conducted in humid southeastern US climates, but lower than those observed in studies in arid regions. The water use efficiency of harvest yield per evapotranspiration flux was 0.26 kg lint cotton m(-3) water and 0.34 kg lint m(-3) water in 2016 and 2017, respectively which 1.5-2 times those of other studies, likely due to higher yields and lower evapotranspiration measured in this study. The findings suggest that US mid-south cotton production should continue to be managed differently than other more arid US cotton production regions.
英文关键词	Cotton Eddy covariance Net ecosystem exchange Evapotranspiration Crop coefficient
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000514931700009
WOS关键词	NET ECOSYSTEM EXCHANGE ; GOSSYPIUM-HIRSUTUM L. ; LEAF-AREA INDEX ; ENERGY-BALANCE ; CROP COEFFICIENTS ; EVAPOTRANSPIRATION ; IMPACT ; GROWTH ; SEQUESTRATION ; RESPIRATION
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313975
作者单位	1.USDA ARS, Delta Water Management Res Unit, Jonesboro, AR 72401 USA; 2.Univ Arkansas, Arkansas State Univ, Div Agr Expt Stn, State Univ, AR USA; 3.Univ Arkansas, Dept Biol & Agr Engn, Fayetteville, AR 72701 USA
推荐引用方式 GB/T 7714	Fong, Bryant N.,Reba, Michele L.,Teague, Tina G.,et al. Eddy covariance measurements of carbon dioxide and water fluxes in US mid-south cotton production[J],2020,292.
APA	Fong, Bryant N.,Reba, Michele L.,Teague, Tina G.,Runkle, Benjamin R. K.,&Suvocarev, Kosana.(2020).Eddy covariance measurements of carbon dioxide and water fluxes in US mid-south cotton production.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,292.
MLA	Fong, Bryant N.,et al."Eddy covariance measurements of carbon dioxide and water fluxes in US mid-south cotton production".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 292(2020).