文献类型：期刊文献

英文题名：Spatiotemporal Evolution of Air-Sea CO₂ Flux in the South China Sea and Its Response to Environmental Factors

作者：Chen, Ying[1,2,3];Zhao, Hui[1,2,3,4];Gao, Hui[1,2,3,4]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Res Ctr Coastal Environm Protect & Ecol Resilience, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Cooperat Res Ctr Nearshore Marine Environm Change, Zhanjiang 524088, Peoples R China;[4]Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China

年份：2024

卷号：16

期号：24

外文期刊名：REMOTE SENSING

收录：SCI-EXPANDED(收录号：WOS:001385627200001)、、EI(收录号：20245317603841)、Scopus(收录号：2-s2.0-85213274938)、WOS

基金：This research was funded by the program for scientific research start-up funds of Guangdong Ocean University (No. 060302122304), the National Natural Science Foundation of China (Grant No. 42076162), the Postgraduate Education Innovation Project of Guangdong Ocean University (Grant No. 202428), and the Innovation Group Project of the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (Grant No. 311020004).

语种：英文

外文关键词：air-sea CO2 flux; South China Sea; sea surface wind; carbon source and sink; sea surface temperature

外文摘要：Increasing atmospheric carbon dioxide (CO2) from human activities underscores the need to understand air-sea CO2 flux in marine environments, particularly in marginal seas like the South China Sea (SCS). This research analyzes the spatial and temporal patterns of air-sea CO2 flux across four typical regions of the SCS: the northern SCS, western SCS, SCS basin, and northeastern SCS. Our results show that the SCS serves as a carbon source from spring to autumn and shifts to a carbon sink in winter. The northern SCS exhibits strong carbon sink behavior during winter, transitioning to a source in warmer months, while the western SCS and SCS basin consistently act as carbon sources year-round, with summer peaks. The northeastern SCS acts as a source in warmer months, becoming a weak sink in winter. Partial correlation analysis reveals that temperature and wind speed significantly influence air-sea CO2 flux, though regional differences exist. Notably, chlorophyll-a in the northern SCS is negatively correlated with air-sea CO2 flux, indicating that high primary productivity enhances CO2 absorption, whereas other regions show contrasting relationships. These findings provide valuable insights into the complex carbon cycle mechanisms in the SCS.