[Methods and practices of urban planning in Chengnan new District of Jintan City, from ecological perspective].

Rapid urbanization stimulates the consumption of resources and the damages on ambient environment. The consideration of environmental protection and resource conservation must be involved in urban planning procedures. Actually more and more planners have realized this problem and started to apply ecological theories and methods in urban planning. The practice of urban planning combining with ecology was demonstrated, using Chengnan New District of Jintan City as the case study. In this case study, environmental impact assessment of the plan was simultaneously carried out so that the remarks of environmental impact assessment could be fed back to the planning procedure. Ecological principles and standards were set up as the ecological deadline of the city development.

[Influence of cage culture in Yaling Bay on water environment].

On the basis of on-the-spot survey and analysis of water quality and bed mud in different cage culture section from April of 2002 to January of 2003, the analysis result indicate that the main influence of cage culture on environment are that: (1) It increase the content of nutrition salt, BOD, COD, organic matter and TSS, especially inorganic-nitrogen, inorganic-phosphor and ammonia nitrogen; (2) It enrich N, P, sulphide and organic matter in sediment. The most obvious is nitrogen, sulphide and ammonia nitrogen, next is total nitrogen and organic matter.