【作者】 蔡婵静；

【导师】 周志翔；

【作者基本信息】 华中农业大学 ， 园林植物与观赏园艺， 2005， 硕士

【摘要】 廊道作为景观生态研究的一个重要的课题,目前已渗透到城市生态、城市景观规划与研究之中。绿色廊道是廊道系统中的关键类型。本文阐述了绿色廊道的概念涵义及分类方法;分析了城市绿色廊道的结构与功能;并将景观生态规划的方法应用于城市绿色廊道的规划上,提出了绿色廊道景观生态规划的5个步骤:基础资料调查——确定规划目标及功能——生态规划——规划与设计的实施——规划项目管理;对前三步进行了详细说明。阐述了绿色廊道分析尺度的4个等级,基础资料的分析方法,功能及规划目标的确定方法和城市各类型绿色廊道布局及宽度的确定方法。 在对城市绿色廊道规划方法进行研究时,提出了依据汽车尾气扩散模型和噪声扩散模型确定绿色道路廊道基本宽度的方法。结果表明:当下风向距离为α₂（H/γ₂）^1/2m时,地面污染物浓度取最大值,可以认为,在此距离之前安排绿色道路廊道,可以有效的减小污染物浓度的最大值,也可减少以后各距离污染物浓度。当道路无分车带或者布置分车带的空间不足时,假定线源在道路中线处,当道路中线距路边的距离小于α₂（H/γ₂）^1/2m时,绿色道路廊道的宽度应该满足与道路半宽之和大于等于α₂（H/γ₂）^1/2m,并且在此基础上越宽越好;当道路中线距路边的距离大于等于α₂（H/γ₂）^1/2m时,绿色道路廊道越宽越好。当道路有分车带,且布置分车带的空间充足时,依据以上原理将每一板块视为单独道路进行绿色道路廊道的布置。在考虑到最大限度减少交通噪音的功能时,绿色道路廊道距离道路越近越好,且越宽越好。 将道路背景环境分为了商业区、文教区和居住区、重工业区、水域、农田和自然植被、山体及公园6大类,分别对其绿色道路廊道绿化带的布置方法进行了详细研究。 将这些理论及方法应用到武汉市绿色廊道的规划中,通过对武汉市廊道景观构成分析、绿色廊道网络结构分析、绿心与绿色廊道的关系分析及热岛效应与绿色廊道的关系分析提出了武汉市绿色廊道存在的问题及不足:各行政区各类型绿色廊道缺乏,特别是绿带;绿色廊道网络连通性较低,间断点太多,绿色廊道不连续;绿更多还原

【Abstract】 As an important aspect of landscape ecology, the studies on corridors are permeating urban ecology and urban landscape planning. Green corridor is a key landscape type. This paper communicates clearly about the definition and the classification of green corridor. Additionally, it analyses urban green corridor’s structure, pattern and function. Applying the method for landscape ecology planning to urban green corridor planning, this study notes five steps of green corridor planning, which are as follows, first, investigating basic data, secondly confirming targets and functions, thirdly ecology planning, fourthly implementing plans and designs and last, managing planning projects, and the former three stages are analyzed clearly. The four scales of green corridor planning and the methods for data analyzing, confirming functions, targets, width of various kinds of urban green corridors are studied.This paper notes that according to the model of vehicle emission dispersion and the model of noises dispersion, the width of green road-side corridor can be confirmedexactly. The results show that when downwind distance is meters, the surfacepollution concentration is the max. Arranging green road-side corridor before this distance can effectively decrease the max concentration and the concentrations at different distance. When there isn’t enough room to arrange dividing strips, we can assume thepollution origin as the midline of road. If the half width of road is shorter than meters, the sum of green road-side corridor width and half road width ought to be equal toor greater than meters, and the greater the green road-side corridor width is, thebetter effect is. If the half width of road is greater than meters, green road-sidecorridor should be arranged from roadside and the greater the green road-side corridor width is, the better effect is. If roads have dividing strips, and there is enough room to arrange diving strips, green road-side corridor should be arranged according to the above principles regarding each slab as a road. Considering its function of reducing traffic noises, green road-side corridor should cling to the roadside, and the wider the greenroad-side corridor is, the better effect is.The environments along the roads comprise six categories. The first category is shopping center, the second one is culture and education, habitation, the third one is heavy industry, the fourth is water area, the fifth is farmland and the last one is natural vegetation, mountain and park. The methods for planning green road-side corridors along different roads with different environments are studied exhaustively.This paper applies the above principles and methods to Wuhan’s green corridor planning, points out the problems of its green corridors by analyzing its corridors’ form, network, the relationship between green focuses and green corridors, the relationship between heat island effects and green corridors. The results show that Wuhan’s all kind of green corridors in each district, especially the green belts, are very scanty. The connectivity of green corridor network is so low, the width is so narrow, and inside environments can not be formed. Some of green focuses don’t be connected each other by green corridors.Considering Wuhan’s natural resources, regional status and the problems of its green corridors, the targets and the functions of Wuhan’s green corridors planning are pointed out and confirmed, which are as follows, building ecological network connecting each urban green focuses, urban and rural green focuses; conserving and improving the diversity of species and habitats, the quality of atmosphere, the productivity of agricultural and horticultural acts adjacent to green corridors; development controlling and urban containment; improving urban microclimate, reducing heat island effects.Lastly, this paper plans and confirms the width, the direction and the pattern of Wuhan’s green corridors. It points out that green network should be uninterrupted on the region scale, the urban scale and the district scale. When green corridors go through the thermal area, and their trends parallel the dominant wind direction, heat island effects can be alleviated greatly.更多还原