APPLICATION OF INTEGRAL INDICES TO THE ASSESSMENT OF ECOLOGICAL RISKS AND DAMAGES

摘要

Human activities such as industry, agriculture and sewage water discharge have considerable impact on water ecosystems and lead to their degradation. Quantitative evaluation of the environmental status of ecosystems with regard to various types of pollutants is an important factor in the river system management. Among various parameters, trace metal concentrations in water and in water organisms and sediments are widely used for environmental monitoring (Van der Oost et al., 1997; Sokal and Rohlf, 2000).