1、中文 7200 字 ,4100 单词， 2.1 万英文字符 绿色基础设施景观规划 Green Infrastructure for Landscape Planning 学 院（系）： 建筑与艺术学院 专 业： 环境设计 学 生 姓 名： 学 号： 指 导 教 师： 完 成 日 期： 绿色基础设施的景观规划 - 2 - 外文原文： Physical infrastructure for promotion of health Parks Naturalistic open space provides the urban dweller with a broad range of servic
2、es, including scenic, psychological, social, educational and scientific, as well as the opportunity to experience nature. Private development rarely provides public open spaces unless compelled by government. This is because the services listed above are health and quality of life interests that are
3、 often beyond the economic calculation of development products and profits. This is to say that developers are not held accountable for the costs of dangerous or unhealthy neighborhoods. Nevertheless, the impacts of these disservices are borne by individuals and the community. Since the free market
4、fails to provide public open space, the public sector acts in the citizens interest. When we consider that healthy ecosystems are also in the citizens interest, then the preservation of biodiversity, flood protection and other services, such as open space, are justifiable planning and government con
5、cerns. Nevertheless, open space generally follows an urban to rural gradient in respect to size and degree of human modification. This reflects land cost and the absence of systematic planning. Although poorly distributed, open space is provided by public agencies including municipalities, counties,
6、 park districts and state parks. These agencies maintain over 20 million acres of land in the US. The majority of this is managed as state parks, but over six million acres is provided by municipal agencies. Two million acres of the municipal land is managed as informal open space (51.8 percent), habitat (34.3 percent) or preservation (4.9 percent).It is clear that
