Effects of depth of sediment dredging in urban rivers on release of nitrogen and phosphorus;

Ecological bank and its application in regulation of urban rivers;

The growth test of different ornamental plants in the sewage urban riverway;

Through the analysis of function and costs about urban riverway repairement project,this paper points out,under the traditional style,the components project capitals and the problems existed in it.

The present condition and the cause of pollution of our country s urban riverway are analyzed.

Ecological and environmental water requirements of urban river course: taking Chuanzihe river as an example;

The urban river course is the essential factor in the sustainable development of the urban society and economy, is the carrier of urban river system,and also is an important component of the urban ecosystem.

The urban river course is the essential factor in the sustainable development of the urban society and economy,is the carrier of urban river system,and also is an important component of the urban ecosystem.

8% on average,and as the urban area rivers,the runoff deepness and the impermeable area accounts for the proportion related.

Experimental study on environmental dredging of a city river;

In order to understand the growth of phytoplankton in city rivers in Suzhou City,and to provide scientific basis for the improvement of water environment,the water condition and the species composition of phytoplankton were investigated in Miaojia River in Suzhou City from May to December in 2004.