三峡大学学报（自然科学版）2017，Vol.39Issue(4)：31-35,5.DOI:10.13393/j.cnki.issn.1672-948X.2017.04.007
城市浅水河流冬夏季温室气体日变化及影响因素
Diurnal Variation of Greenhouse Gases from Urban Shallow River in Winter and Summer
摘要
Abstract
Employing floating static chamber method,the greenhouse gases fluxes at the water-air interface of the Qiusuo River,including CO2 and CH4,were continuously monitored for 24 hours in winter and summer,respectively.Based on these observed data,the variation and its effecting factors are analyzed.The results show that the Qiusuo River is the sink of absorbing CO2 and the source of releasing CH4 whether in winter or summer.No differences in diurnal mean CO2 fluxes were found between the two seasons.However in summer,there was significant diurnal changes in CO2 fluxes because of some effecting factors,such as temperature and pH value.Diurnal mean CH4 fluxes in summer was higher than that in winter,which is mainly related to temperature and humidity.Besides,most CH4 fluxes in summer were released by bubbling.There were significant diurnal changes in environmental factors in summer;therefore it is necessary to monitor continuously for 24 hours to estimate its diurnal mean gas fluxes at the water-air interface.关键词
城市浅水河流/日变化/冒泡/温室气体Key words
urban shallow river/diurnal variation/bubbling emission/greenhouse gases分类
资源环境引用本文复制引用
谢恒,龙丽,肖尚斌,张成,张文丽..城市浅水河流冬夏季温室气体日变化及影响因素[J].三峡大学学报（自然科学版）,2017,39(4):31-35,5.基金项目
三峡库区生态环境教育部工程研究中心开放基金(KF2016-03) （KF2016-03）
湖北省自然科学基金项目(2014CFB672) （2014CFB672）
