Based on sampling and analysis of particulate mercury in two districts of ChongQing in winter and spring 2004,this paper discussed the condition of mercury pollution in ChongQing from the particulate angle,analyzed the character of the pollution and assessed the flux of dry mercury deposition in ChongQing using the theoretical model.

In urban renewal,the Hong Kong government upholds the concepts of"people-oriented"and"social priority",improves the quality of life for urban resi- dents as a starting point and takes into account the interests of all parties.

The Application of "Anti-planning" Con- cept in the Spatial Expansion of Moun- tainous Cities ——With the Planning of Chongqing Metropolitan Area as an Example;

From macro, medium, and micro levels, Chongqing metropolitan area comprehensive urban design research makes in-depth probe into the natural character, unit-style multi-center layout, three dimensional star-shape open space system, and urban identity based landscape system, puts forward development guidelines for different development zones, and provides reference for urban master plan.

This paper,by analyzing the backgrounds and characteristics of urban spatial development,presents the urban spatial strategies of Chongqing metropolitan area.