Eutrophication,health risk assessment and spatial analysis of water quality in Gucheng Lake,China |
| |
| Authors: | Feng Cun Yu Guo Hua Fang Xiang Wen Ru |
| |
| Institution: | (1) College of Water Resources and Hydropower Engineering, Hohai University, Nanjing, China;(2) State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, China; |
| |
| Abstract: | The water characteristics of the Gucheng Lake, such as eutrophication, health and spatial distribution, were investigated.
On the basis of the trophic state index (TSI) and entropy weight, a synthesized trophic state index (STSI) model was established
to assess lake eutrophication condition through calculating STSI, choosing TP, TN, COD, BOD and NH3-N as trophic variables. The STSI ranged from 50.58 to 62.44, which showed that the water has been between eutrophic and supereutrophic.
A histogram was applied to health risk assessment which was analyzed from carcinogenic substances (Cr+6, As and Cd) and non-carcinogenic substances (hydroxybenzene, Pb, Hg, CN− and NH3), and the results showed that the former was much greater than the latter for effect. The total risk for each resident caused
by all pollutants ranged from 5.18E-05 to 8.34E-05, which is far higher than the standard, recommended by Sweden Bureau of
Environment Protection and Holland Ministry of Building and Environment Protection (1.0E-05). Cluster analysis was used to
detect similarities and dissimilarities among the seven sampling sites and explain the observed clustering in terms of affected
conditions. Twenty-one variables were used to divide seven sampling sites into three groups, namely, north lake, south lake
and lake center. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
