科研之友
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摘要
According to an ecological survey in 10 Shanghai districts, sampling 24 rivers on a quarterly basis between 2011 and 2013, a phytoplankton integrity index (P-IBI) was developed to establish a Shanghai Rivers Status. According to the investigation of phytoplankton in 24 rivers during 2011-2013, 6 relatively clean sites and 18 contamited sites were defined using THE Shannon index of phytoplankton and physicochemical water quality data (TN, TP, CODMn). Judgement ability and the Pearson correlation were performed on 19 candidate metrics with SPSS 18.0 and origin 8. The results show that 4 biological metrics, the Shannon index of phytoplankton, percentage of the number of diatom taxa, abundance of algal, percentage of movable diatom density, are more suited to health assessment on rivers of Shanghai. Using a unified dimensionless ratio method, the quartering division of Shanghai river health standards led to the following categories: > 2.53 for healthy, 1.90 to 2.53 for sub-healthy, from 1.27 to 1.90 for general health, between 0.63 to 1.27 for poor health, and from 0 to 0.63 for poorest health. Ultimately, assess with those criteria, the results show that among 24 sites in Shanghai, 4 sites were healthy, 12 sites were sub-healthy, 7 sites were general health, and 1 site was poor health.
- 出版日期2016
- 单位上海海洋大学
