Abstract: With the theory and methodology of urban ecological system,this article researches the ways of eliminating wastes for making city beautiful,improving people's daily life and promoting production.It layes emphasis on that the urban environment and its natural environment must be considered as a whole,and the self-cleaning capacity of natural eco-system must be made used of.In order to reduce the atmospheric polution,high chimnies should be built.Urban district suburb must be also considered as a whole.In order to protect the water resources of Yiangzhi River and Jialingjiang River,the cleaning capacity of land system should be made used of for handling the industrial and domestic wastes and making them useful.

Key words: Pinus taiwanensis, Community, Gap, Light, Regeneration, Huangshan Mountain