IPR and IRR, modules of process analysis in CMAQ, were used to explore the O_ 3 building process in urban area with focus on radical and NO_x cycles.

Water Quality Mathematical Modeling of Urban River;

In order to control railway noise pollution in urban areas,the residential district located near the Zhegan railway in Hangzhou urban was taken for example,and some controlling measures were proposed based on the investigation in railway noise impact as well as the planning of the district,the environmental scene and the project devises.

From the angle of the program of cities,the science quality of the three factors concerning the planning of harmonious cities,namely city residents,urban view,and urban district,and the concept of concretely implementing it in the program,are analyzed with the system theory and the city space theory.

The number of resident of Tongren city is increasing,which lead to the augment of The household water consumption,but total water resource in Tongren region is 11.

The paper analysis the effect of the air pollution fountain(icluding the emit fountain and the non-emit fountain) to Anshan city,using the atmosphere emit and the ADMS-urban model.

In view of the case of karst in Anshan city,the risk area of karst collapse is forecasted and its risk grade is assessed.