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	Water-Air Interface CO2 Exchange Flux of Typical Lakes in a Mountainous Area of the Western Chongqing and Their Influencing Factors
	Luo, Jia-Chen1,2; Ni, Mao-Fei1,2; Li, Si-Yue1
	2019
摘要	To examine the mountainous lake CO2 evasion in Southwest China, partial pressures of carbon dioxide [p(CO2)] and the CO2exchange flux [F(CO2)] via the water-air interface of nine mountainous lakes in Chongqing, China, have been studied in summer using the thin boundary layer model (TBL) and floating chambers. Key water quality parameters were concomitantly measured. The results indicate that the pCO2 in the mountainous lakes in western Chongqing ranges from 2.1 to 45.0 Pa, with a mean value of (18.1±12.1) Pa. The mean CO2fluxes calculated by the TBL model and chamber method are (-8.0±2.9), (-3.4±3.6), and (-7.1±22.3) mmol•(m2•d)-1, respectively. The p(CO2) and F(CO2) have positive correlations with the wind speed and ORP but negative correlations with the pH. Our study indicates that mountainous lakes are atmospheric sinks of CO2 and the TBL model should be cautiously adopted. © 2019, Science Press. All right reserved.
DOI	10.13227/j.hjkx.201805065
发表期刊	Huanjing Kexue/Environmental Science
ISSN	02503301
卷号	40期号:1页码:192-199
收录类别	EI
语种	中文