Particulate organic carbon (POC) and its isotopic composition were measured monthly in the ChangjiangRiver (at Sta. Datong)for a whole year. It shows that their seasonal distribution has an obvious change and is simil...Particulate organic carbon (POC) and its isotopic composition were measured monthly in the ChangjiangRiver (at Sta. Datong)for a whole year. It shows that their seasonal distribution has an obvious change and is similarto that of the Huanghe River. The annual weighted mean of POC 13 C values of the Changjiang River is almost the same as that of the Huanghe River. Based on the data of runoff and sediment load measured daily and POC concentra-tion measured monthly the POC flux at Sta. Datong was estimated. The flux value at Datong may be considered ap-proximately to be the M flux of the Changjiang River discharging into the sea. The M flux of the Changjiang Riv-er is slightly larger than that of the Huanghe River.展开更多
文摘Particulate organic carbon (POC) and its isotopic composition were measured monthly in the ChangjiangRiver (at Sta. Datong)for a whole year. It shows that their seasonal distribution has an obvious change and is similarto that of the Huanghe River. The annual weighted mean of POC 13 C values of the Changjiang River is almost the same as that of the Huanghe River. Based on the data of runoff and sediment load measured daily and POC concentra-tion measured monthly the POC flux at Sta. Datong was estimated. The flux value at Datong may be considered ap-proximately to be the M flux of the Changjiang River discharging into the sea. The M flux of the Changjiang Riv-er is slightly larger than that of the Huanghe River.
