Using eutrophication index E as the assessment standard, the results show that from north to south, the eutrophication degree decreases gradually, and the pollution is obvious in the sea beach and shallow water culture areas, where eutrophication degree is high.

Based on the old evaluating methods of road traffic noise,the traffic noise integrated impact index was proposed,the unsteady characteristic of road traffic noise was considered.

Based on local monitoring data from representative valleys along the Three-Gorges valley during algae blooms,the activation energy ΔE of green alga photophosphorylation,the effective energy Δe and the integrated nutritional index TLI(Σ) in these water areas.

This paper introduces prediction model of road traffic noise, distribution and optimization of monitoring points of traffic noise in residential area, bring forward the fuzzy evaluation method and combined effect of traffic noise index method of the impact of urban road traffic noise on residents, an

Combined the physical,chemical and biological index,using the Margelef multiple index and trophic state of comprehensive index(TSCI),the qualitative analysis and investigation of the water body quality of the subsidence pool are carried on in Huainan mining area,the inherent laws of water quality variation are discussed.