Open AccessAnnual Variation of CO2 Absorption and Release in Xiangxi River of Three Gorges Reservoir
Author(s) -
Yongsheng Zhang,
Haiying Li,
Xuchun Ye
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/585/1/012043
Subject(s) - three gorges , environmental science , hydrology (agriculture) , yangtze river , absorption (acoustics) , geology , materials science , geography , geotechnical engineering , archaeology , china , composite material
To analyze the annual variation of CO 2 absorption and release in Xiangxi River of Three Gorges Reservoir, this paper set up six monitoring points in the Yangtze River and Xiangxi River to monitor CO 2 emission flux at the air-water interface from July 2017 to June 2018 using static chamber method. During the investigation, this paper found that the variation rate of CO 2 in the Xiangxi River averaged 0.67-2.14 ppm/min while the number for the Yangtze River was 1.07 ppm/min and 2.82 ppm/min respectively. The variation rate of CO 2 was lower during water storage and higher during water discharge or in dry periods. The status of CO 2 changed from absorption to release during water storage and vice versa during water discharge.