Sediment environmental capacity of pollutants is very important for marine environmental management.Based on the methodology of a study on water,soil environmental capacity,and mass conservation theory in a system,the...Sediment environmental capacity of pollutants is very important for marine environmental management.Based on the methodology of a study on water,soil environmental capacity,and mass conservation theory in a system,the concept and model on sediment environmental capacity for 137Cs in Daya Bay were developed.The static capacity for 137Cs in the upper sediment near the shore at a shallow area was calculated,and the annual dynamic capacity and total dynamic capacity were also calculated through determination of the typical biomass in the sediment.The results showed that the estimated environmental capacity for 137Cs in sedi-ments was approximately equal to the current input of 137Cs into the sediments.Controlling the input of 137Cs in the sedi-ments within the environmental capacity guarantees the sus-tainability of the current situation of the Daya Bay ecosystem and avoidance of a significant degradation of the system.展开更多
基金This work was supported by the Key Science and Technology Project of Guangdong Environmental Protection Bureau(Grant No.YUEHUAN 1999-31).
文摘Sediment environmental capacity of pollutants is very important for marine environmental management.Based on the methodology of a study on water,soil environmental capacity,and mass conservation theory in a system,the concept and model on sediment environmental capacity for 137Cs in Daya Bay were developed.The static capacity for 137Cs in the upper sediment near the shore at a shallow area was calculated,and the annual dynamic capacity and total dynamic capacity were also calculated through determination of the typical biomass in the sediment.The results showed that the estimated environmental capacity for 137Cs in sedi-ments was approximately equal to the current input of 137Cs into the sediments.Controlling the input of 137Cs in the sedi-ments within the environmental capacity guarantees the sus-tainability of the current situation of the Daya Bay ecosystem and avoidance of a significant degradation of the system.
