Fate of heavy metals and evaluation of eutrophication in a wetland-reservoir system.
The fate of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) in the water column, sediment, and macrophytic plants as well as a total phosphorus eutrophication model were evaluated by a field monitoring program in the LungLuanTan wetland-reservoir system in Taiwan. Zinc and Cd were found to have the highest and lowest partition coefficients, respectively. The levels of heavy metals in the sediment of the wetland were highest in the dry season. In fresh plant tissues and sediment, Cd had the highest bioconcentration factor during the study period. Furthermore, the results obtained using the total phosphorus model with time-variable volumes for reservoir eutrophication and observed values were in reasonable agreement. Based on the modeling results, appropriate watershed management strategies are proposed to restore the wetland-reservoir water quality.
Chou-Ping
CP
Yang
Chi-Ying
CY
Hsieh
Zeng-Yei
ZY
Hseu
D003661:Decision Support Techniques; D031806:Eichhornia / Q000378:metabolism; D004784:Environmental Monitoring / Q000379:methods*; D005068:Eutrophication; D019015:Geologic Sediments / Q000032:analysis*; D060106:Lakes; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism*; D008956:Models, Chemical; D010758:Phosphorus / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D012621:Seasons; D013624:Taiwan; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*; D060753:Water Quality; D053833:Wetlands
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D010758:Phosphorus