人民长江2016，Vol.47Issue(13)：28-31,75,5.DOI:10.16232/j.cnki.1001-4179.2016.13.006
宜昌求索溪冬季温室气体通量昼夜变化特征
Diel variation of greenhouse gas flux from Qiusuo River of Yichang in winter
摘要
Abstract
To investigate the emission law of greenhouse gas in small water body,by using LGR - floating static flux chamber method,a 24 -hour field continuous observation was carried out to quantify the CH4 and CO2 fluxes across the water -air inter-face of Qiusuo River in China Three Gorges University at Yichang.The observed results showed that CH4 and CO2 are positively correlated,both of which emitted all day.Moreover,the correlation analysis indicated that CO2 flux had a significant positive cor-relation with water temperature and air -pressure,but a negative correlation with temperature,pH,dissolved oxygen and chloro-phyll a;CH4 flux had a positive correlation with air -pressure and negative correlation with other factors;CH4 and CO2 fluxes at 10:00 and 21 :00 are close to the average values of a day,so this period can be referred as sampling time for a single measure-ment.关键词
温室气体通量/水-气界面/CH4和CO2/求索溪/宜昌市Key words
greenhouse gases flux/water -air interface/influential factors/CH4 and CO2/Qiusuo River/Yichang City分类
资源环境引用本文复制引用
李书焱,刘璇,周末,龙丽,张军伟,穆晓辉,雷丹..宜昌求索溪冬季温室气体通量昼夜变化特征[J].人民长江,2016,47(13):28-31,75,5.基金项目
国家自然科学基金资助项目 （）
