Characteristics of carbon storage and its influencing factors in waters of East Dongting Lake in different periods
WANG Li-jing1, ZHU Yi-fan1,2, TIAN Ze-bin1, JI Dao-bin2, YANG Zhong-yong2, LI Ying-jie1, LIU Jia2, MENG Jiang-huai2
1. State Environmental Protection Scientific Observation Station of the Dongting Lake, Chinese Academy of Environmental Sciences, Beijing 100012, China; 2. College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002, China
Abstract：The acid-base balance of the water body, Henry's law and indoor experiments, the carbon content of each water body along with their key environmental factors in East Dongting Lake (EDL) were monitored during normal season in April 2022 and flood season in June 2022. The results show that the content magnitude of each carbon component in EDL in different periods was in the order of dissolved inorganic carbon (DIC) > dissolved organic carbon (DOC) > particulate organic carbon (POC) > particulate inorganic carbon (PIC). The main influencing factors included water level variation, physical and chemical factors of water, inflow of Xiangjiang River and partial pressure of greenhouse gases. The effects of water temperature (Temp), pH value, dissolved oxygen (DO) and chlorophyll a (Chl-a) on carbon content varied significantly with sampling season.
王丽婧, 朱怡帆, 田泽斌, 纪道斌, 杨忠勇, 李莹杰, 刘佳, 孟江槐. 不同时期东洞庭湖水域碳素赋存特征及其影响因素[J]. 中国环境科学, 2023, 43(5): 2542-2552.
WANG Li-jing, ZHU Yi-fan, TIAN Ze-bin, JI Dao-bin, YANG Zhong-yong, LI Ying-jie, LIU Jia, MENG Jiang-huai. Characteristics of carbon storage and its influencing factors in waters of East Dongting Lake in different periods. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(5): 2542-2552.
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