Editorial: Environmental biogeochemical behaviors of humic substances and their effects in the hydrosphere

Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences, Beijing, China, Department of Environment and Energy, Sejong University, Seoul, South Korea, Environmental Program, Guangdong Technion—Israel Institute of Technology, Shantou, China, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei, China, All-Russia Institute for Geology and Mineral Resources of the World Ocean (VNIIOkeangeologia), Saint-Petersburg, Russia