城市绿色基础设施探讨UrbanGreenInfrastructure-Universityof.PDFVIP

城市绿色基础设施探讨: 以发展中国家城市为例 Urban Green Infrastructure: for Cities of Developing Countries Part of the ELITH Project Report Documents Ali Cheshmehzangi and Chris Butters 0 前言 Foreword 发展中国家的城市大多处在炎热的气 Developing country cities are mostly in hot 候带中，并正在迅速发展。他们未来 climates and are growing very rapidly. Their future 的能源和环境影响是一个主要问题。 energy and environmental impacts are a major 世界各地的例子表明，城市可以用一 concern. Examples worldwide show that cities can 个更可持续的方式计划和建设，并且 be planned and built in a more sustainable way – 不需要较高的成本。 without significantly higher costs. 城市的绿色基础设施包括其开放空间、 The green infrastructures of a city are its open 植被、公园、湖泊和水文要素。这些 spaces, vegetation, parks, lakes and water 设施用于提供新鲜空气和休闲场所， features. They provide fresh air and recreation, but 并过滤污染物，也是城市通风的关键。 they can also filter pollutants and are a key to 如果计划合理，他们有助于建设更少 urban ventilation. If well planned they help to make 污染、更健康、更凉爽的城市，并大 a city less polluted, healthier and also cooler, 大降低城市的能源需求和成本。 considerably reducing the city’s energy needs and costs. 一些最有效的环境规划往往是是简 Some of the most effective environmental planning 单廉价的。所以，在对已存在的解决 is simple and inexpensive. In many cases greener, 方案有更深刻的认识和了解的情况下， more comfortable and sustainable cities can be 更环保、更舒适、更可持续发展的城 achieved – given more awareness and knowledge 市是可以实现的。通常观点下，可持 about solutions that already exist. One hears often