基于透视学原理的旷地型风景资源周边环境高度控制模型——以南京玄武湖公园为实证分析对象

摘要

Open-type landscape resource is a type of scarce visual resources in contemporary city.The ambient environment height control for open-type landscape resources is an important environmental protection subject.Two rules which accommodate the eyes to seeing objects at different distances are analyzed based on the perspective principle.According to the two rules and the perspective principle,the problems of existing height control methods are analyzed and ambient environment height control models for open-type landscape resources are designed.The model includes classification of level of control,selection of main view point,algorithm of environment height and control range.Nanjing Xuanwu Lake Park is selected to illustrate the application process of the method.The status of ambient environment height of Nanjing Xuanwu Lake Park is evaluated and the research scheme is proposed.The experimental results validate that this method is effective.%旷地型风景资源在当代城市中属于稀缺性视觉资源,其周边环境的高度控制是一个重要的环境保护课题.利用透视学的原理分析了人眼观察不同距离景物时存在的两条规律,以此为基础一方面剖析了现行的高度控制方法存在的某些司题;另一方面设计出了旷地型风景资源周边环境的高度控制模型.模型包括控制级别的分类、主要视点的选择、周边环境高度的算法、高度控制范围的算法四个部分.以南京玄武湖公园为实证对象,运用模型提出其周边环境的高度控制方案,并进行现状评价.实验过程及结果证明了研究方法的可靠性.