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CH4 Fluxes During the Algal Bloom in the Pengxi River
Qin, Yu1; Zhang, Yu-Yang1; Li, Zhe2; Ma, Jian-Rong2
2018
摘要Emissions of greenhouse gases in the Three Gorges Reservoir have been attracting attention in the recent years. This study was conducted to reveal the CH4 emission and removal during the process of algal growth at different nitrogen and phosphorus concentrations in the Pengxi River in the Three Gorges Reservoir. In-situ field experiments were conducted in the Gaoyang Lake in Pengxi River. From April 22nd, 2016, to May 9th, 2016, different concentrations of nitrogen and phosphorus were added to different experimental chambers. Results showed that CH4 emission decreased sharply from the first day of the experiment to the sixth day, and after that, CH4 emission in the water samples with only added phosphorus were obviously recovered compared to the other treatment. In this experiment, algal biomass was influenced by different concentrations of N and P. The biomass of algae were not affected by N, but were promoted under suitable concentration of P, such as 1P, 10P, 1NP, and 10NP. When the P concentration was too high, the biomass of algae was also limited. The emission and removal of CH4 in the experiment were significantly related to the addition of NO3--N. © 2018, Science Press. All right reserved.
DOI10.13227/j.hjkx.201706044
发表期刊Huanjing Kexue/Environmental Science
ISSN02503301
卷号39期号:4页码:1578-1588
收录类别EI
语种中文