A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Greenhouse gases concentrations and fluxes from subtropical small reservoirs in relation with watershed urbanization
https://orcid.org/0000-0001-8486-1067
AbstractGreenhouse gas (GHG) emissions from reservoirs and global urbanization have gained widespread attention, yet the response of GHG emissions to the watershed urbanization is poorly understood. Meanwhile, there are millions of small reservoirs worldwide that receive and accumulate high loads of anthropogenic carbon and nitrogen due to watershed urbanization and can therefore be hotspots of GHG emissions. In this study, we assessed the GHG concentrations and fluxes in sixteen small reservoirs draining urban, agricultural and forested watersheds over a period of one year. The concentrations of pCO2, CH4 and N2O in sampled urban reservoirs that received more sewage input were higher than those in agricultural reservoirs, and were 3, 7 and 10 times higher than those in reservoirs draining in forested areas, respectively. Accordingly, urban reservoirs had the highest estimated GHG flux rate. Regression analysis indicated that dissolved total phosphorus, dissolved organic carbon (DOC) and chlorophyll-a (Chl-a) had great effect on CO2 production, while the nitrogen (N) and phosphorus (P) content of surface water were closely related to CH4 and N2O production. Therefore, these parameters can act as good predictors of GHG emissions in urban watersheds. Given the rapid progress of global urbanization, small urban reservoirs play a crucial role in accounting for regional GHG emissions and cannot be ignored.
HighlightsHigher GHG fluxes from small reservoirs in urban area than the rural ones.DOC, DTP and chl-a act as potential controls for the reservoirs pCO2 and CO2 flux.Nutrients of surface water act as good predictors of reservoir CH4 and N2O fluxes.Primary production and rainfall account for the seasonality of reservoir GHG fluxes.
Greenhouse gases concentrations and fluxes from subtropical small reservoirs in relation with watershed urbanization
https://orcid.org/0000-0001-8486-1067
AbstractGreenhouse gas (GHG) emissions from reservoirs and global urbanization have gained widespread attention, yet the response of GHG emissions to the watershed urbanization is poorly understood. Meanwhile, there are millions of small reservoirs worldwide that receive and accumulate high loads of anthropogenic carbon and nitrogen due to watershed urbanization and can therefore be hotspots of GHG emissions. In this study, we assessed the GHG concentrations and fluxes in sixteen small reservoirs draining urban, agricultural and forested watersheds over a period of one year. The concentrations of pCO2, CH4 and N2O in sampled urban reservoirs that received more sewage input were higher than those in agricultural reservoirs, and were 3, 7 and 10 times higher than those in reservoirs draining in forested areas, respectively. Accordingly, urban reservoirs had the highest estimated GHG flux rate. Regression analysis indicated that dissolved total phosphorus, dissolved organic carbon (DOC) and chlorophyll-a (Chl-a) had great effect on CO2 production, while the nitrogen (N) and phosphorus (P) content of surface water were closely related to CH4 and N2O production. Therefore, these parameters can act as good predictors of GHG emissions in urban watersheds. Given the rapid progress of global urbanization, small urban reservoirs play a crucial role in accounting for regional GHG emissions and cannot be ignored.
HighlightsHigher GHG fluxes from small reservoirs in urban area than the rural ones.DOC, DTP and chl-a act as potential controls for the reservoirs pCO2 and CO2 flux.Nutrients of surface water act as good predictors of reservoir CH4 and N2O fluxes.Primary production and rainfall account for the seasonality of reservoir GHG fluxes.
Greenhouse gases concentrations and fluxes from subtropical small reservoirs in relation with watershed urbanization
https://orcid.org/0000-0001-8486-1067
AbstractGreenhouse gas (GHG) emissions from reservoirs and global urbanization have gained widespread attention, yet the response of GHG emissions to the watershed urbanization is poorly understood. Meanwhile, there are millions of small reservoirs worldwide that receive and accumulate high loads of anthropogenic carbon and nitrogen due to watershed urbanization and can therefore be hotspots of GHG emissions. In this study, we assessed the GHG concentrations and fluxes in sixteen small reservoirs draining urban, agricultural and forested watersheds over a period of one year. The concentrations of pCO2, CH4 and N2O in sampled urban reservoirs that received more sewage input were higher than those in agricultural reservoirs, and were 3, 7 and 10 times higher than those in reservoirs draining in forested areas, respectively. Accordingly, urban reservoirs had the highest estimated GHG flux rate. Regression analysis indicated that dissolved total phosphorus, dissolved organic carbon (DOC) and chlorophyll-a (Chl-a) had great effect on CO2 production, while the nitrogen (N) and phosphorus (P) content of surface water were closely related to CH4 and N2O production. Therefore, these parameters can act as good predictors of GHG emissions in urban watersheds. Given the rapid progress of global urbanization, small urban reservoirs play a crucial role in accounting for regional GHG emissions and cannot be ignored.
HighlightsHigher GHG fluxes from small reservoirs in urban area than the rural ones.DOC, DTP and chl-a act as potential controls for the reservoirs pCO2 and CO2 flux.Nutrients of surface water act as good predictors of reservoir CH4 and N2O fluxes.Primary production and rainfall account for the seasonality of reservoir GHG fluxes.
Greenhouse gases concentrations and fluxes from subtropical small reservoirs in relation with watershed urbanization
Wang, Xiaofeng (author) / He, Yixin (author) / Yuan, Xingzhong (author) / Chen, Huai (author) / Peng, Changhui (author) / Yue, Junsheng (author) / Zhang, Qiaoyong (author) / Diao, Yuanbin (author) / Liu, Shuangshuang (author)
Atmospheric Environment ; 154 ; 225-235
2017-01-25
11 pages
Article (Journal)
Electronic Resource
English
Fluxes of greenhouse gases from hydropower dams reservoirs in Brazil
| British Library Conference Proceedings | 2006
Sediment in Small Reservoirs Due to Urbanization
| ASCE | 2021
Reinjection of greenhouse gases into geothermal reservoirs
| Elsevier | 2017
Sediment in Small Reservoirs Due to Urbanization
| ASCE | 2021