AUTHOR=Yao Peng , Bianchi Thomas S. , Burdige David J. , Feng Xiaojuan , Raymond Peter A. TITLE=Editorial: Carbon cycling in aquatic critical zones JOURNAL=Frontiers in Earth Science VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2022.975323 DOI=10.3389/feart.2022.975323 ISSN=2296-6463