Aquatic carbon indicators 1 Biogeochemical cycle 1 Biogeochemistry 1 Carbon dioxide 1 Catchments 1 China 1 Colony forming units 1 Degassing 1 Dissolved organic carbon 1 Dissolved oxygen 1 Field sampling 1 Heterotrophic bacteria 1 Nutrients 1 Organic carbon 1 PCO2 and CO2 fluxes 1 Prediction models 1 Rapid urbanizations 1 Reservoirs (water) 1 Rivers 1 Seasonal differences 1 Three Gorges Reservoir (TGR) area Three gorges reservoir 1 Urban development 1 Urban growth 1 Urbanization gradient 1 air-water interaction 1 biogeochemical cycle 1 carbon emission 1 land cover 1 partial pressure 1