谈城市绿地的功能与设计

森林的生态效益和社会效益的总值如净化空气、保持水土、保护动物、提供体息等方面的价值，已远远超过其经济价值。城市是一个开放的系统，集中了大量的人群，直接间接地消耗着数量惊人的动物植物和矿物资源。为满足其衣食住行的需要，要产生大量的生活、工业、交通三废和噪音。城市绿地及园林的建设不仅可提供人们观赏旅游文化休息的场所，更为重要的是可以维持生态平衡和创造良好的环境效益。要使城市绿地充分发挥其改善环境的功能，更好地满足居民游息活动的需要，达到美化城市的目的，就必须按照一定的原则，合理的组织绿化规划，布局绿地使之成为一个有机的系统。一方面要有效地防止三废污染，还要有充足的绿地空间，同时要与城市建筑，道路及其他公共建设相结合。

DISCUSSING ON FUNCTIONS AND DESIGNS OF GREENLAND OF THE CITY

s The total value on forestry ecological and social benefits, such as purifingair,preserving water and soil,protecting animals providing a rest for the people,and so on,have exceeded HS economical value for away,The city as a opening systeln has a large num-ber of population and directly or indirectly expend a astonishing number of resources on ani-mals,plants and minerals,For meeting the needs of the people's everday life of the city,itproduce a large number of life,industry,transportation pollution and noise,The constructionof greenlands and gardens in the city,are not only to provide the place for people's travel-ling,taking a rest,but also more important to maintain ecological balance and create a bestenvironmental benefit.For acheiving the aim above,we must mate afforestation plans and de-signs reasonably according to some certain rules,So that the city become a arganic system;This system with efficient greenlands can protect the pollution efficiently, and at same time. If should combine with architecture,roads and other public constructions of the city.