Diversity and Application of Herbaceous Flowers in Urban Road Greening in Hefei City

In urban road greening,the planting of ground cover flowers is essential,and herbaceous flowers are an important part.Through the investigation on the diversity of herbaceous flowers in urban road green spaces of Hefei City,the types,colors,application frequency and planting of herbaceous flowers in urban road green spaces were statistically analyzed,and the application forms of herbaceous flowers in the road greening of Hefei City were studied.The characteristics and problems of herbaceous flowers in the road greening of Hefei City were found,and some development suggestions were put forward.

Study on Road Greening in the Main Urban Area of Chongqing City Based on Plant Diversity

The greening situation of 242 road greenbelts in 7 administrative regions in the main urban city of Chongqing City was investigated by field survey, and the plant composition, application frequency, species richness and diversity of plants used for road greening in the main urban area were analyzed. The results show that there were 105 species of plants used for road greening(not including seasonal flowers displayed temporarily) in the main urban area of Chongqing City, belonging to 80 genera, 47 families. Among them, there were 95 species of woody plants and 10 species of perennial herbs, accounting for 90.47% and 9.53% of the total number respectively. Some suggestions were put forward according to the current situation and problems of road greening in the main urban area of Chongqing City.

Application Strategy of Green Transportation Concept in Urban Road Design

Urban traffic and urban environmental pollution are important issues that must be taken into account in the process of urbanization,especially in China.Modernization has enabled many developed countries in the west to carry out rational city traffic planning.At the same time,the concept of green transportation has also emerged,integrating low-energy consumption,low pollution,comfort,and safety into urban traffic to effectively solve issues pertaining to traffic and pollution.The concept of green transportation has been widely adopted in China and made popular in many cities,thereby promoting the sustainable development of cities.

Functions, Selection and Collocation of Greening Plants in the Construction of Ecological Roads

From the perspective of ecological construction of roads, the reduction and purifying effects of greening plants on noise, raising dust and automobile exhaust, selection principles of arbors, shrubs, ground cover plants and herbaceous fl owers, and the methods of collocating arbors shrubs and grass in the construction of ecological roads were discussed in this study.

Maintenance Measures of Urban Road Landscaping

Functions of urban road greening were analyzed firstly,and then problems in the maintenance of urban road greening were discussed. Finally,measures to strengthen the maintenance of urban road greening were put forward,such as strictly controlling design and construction,strengthening greening supervision,enhancing greening maintenance and management and improving maintenance measures,and strengthening the prevention and control of pests and diseases in road greening.

Urban avifauna distribution explained by road noise in an Eastern European city

In Eastern Europe,efforts are being made for road infrastructure development,as this area has not yet reached the level of that in the West.Road noise negatively affects birds,especially in urban habitats.Therefore,seven green spaces from an Eastern European city were monitored,which were selected according to the urbanization gradient and the hydrographic peculiarities of the area.The correlation between species richness and human population density,urban mobility,or road noise was verified.These three factors together explained over 99%of species richness distribution in habitats and during study periods.Road noise was the strongest predictor and the most negative influencer of bird species.These correlations were higher when we also considered the variability of species in habitats over time,instead of the total species richness of a habitat,as it expresses more accurately the impact of noise on the presence of species.The presence of species has decreased from one habitat to another along the urbanization gradient,from the edge of the city to the center,both in the case of terrestrial and aquatic green spaces.The most central park differed significantly from the other terrestrial green spaces in the city.At the same time,no significant differences were registered between the aquatic habitats or the rest of the terrestrial habitats.The ideal mitigation measure in this case would be that there are no roads in the immediate vicinity of green spaces.Still,if this is not possible(as in the case of all the existing green spaces in a city),we discuss/recommend placing noise barriers at the edge of green spaces or high-speed roads.

The Landscape Design of Roads Afforestation of Jiangnan New District in Mudanjiang Municipality

Based on road characters in Jiangnan New District in Mudanjiang Municipality,four typical roads were selected to carry out road afforestation design with consideration of local building features and local vegetations,in order to integrate both of landscape effects,in terms of improving and beautifying city environment,and of ecological effects,such as filtering air,reducing temperature,increasing humidity,and reducing noise.

Road Greenbelt Design of Zhangye City

Road greenbelt design is one of the important parts in urban road system.Zhangye City's road greenbelt design,relying on the general planning concept,namely,'water leads to green space,green space blends the city',emphasizes the harmonious relation between the greenbelt and ecological environment.The concept is adopted to guide the green design of the major roads,subsidiary roads,and trunk roads.It will offer some references for the similar engineering design.

The Safe Distance Between Road Lighting Fixtures and Street Trees

The road lighting system and the road greening system, which are mutually interrelated and independent, are two important parts in the urban road environment. Unreasonable road lighting is easy to induce light pollution and has a great negative impact on the physiology and growth of garden plants in the urban green space. In this paper, 21 kinds of common tree species in the urban green space of Zhengzhou were selected as the research object, and the photosynthetic physiological parameters of landscape trees under the LED light source were observed using LI-6400 Photosynthesis System. This paper attempted to find the critical point for initiating photosynthesis of different types of tree species under a certain light source and then calculated the safe distance between lighting fixtures and landscape trees. The results showed that road lighting interfered with the photosynthetic physiological activities of the surveyed trees, affecting the normal dormancy of the plants at night; the sensitivity of different tree species to night lighting was different, and there were some differences in the light compensation points, so the corresponding safe distance was also different. It is hoped that this study can provide a valuable reference and scientific basis for urban road greening and lighting design.

城镇密集区公路桥群绿色建造创新探索

为提升城镇密集区公路绿色建造水平,结合南(沙)—中(山)高速的项目特点及工程需求,将绿色发展理念贯彻到公路设计、施工、运营、养护和管理的全寿命周期,重点研发了公路桥群工业化智能建造、公路资源综合利用、滨海湿地区公路环境保护与粤港澳大湾区交旅融合设计等四类十项创新技术。其中,预制梁环形生产线、非标准八车道等为项目特色首创技术,初步构建了典型城市群绿色桥群公路技术体系,并对未来重点发展方向进行了展望,以期丰富和完善粤港澳大湾区绿色公路技术体系,为其他高度城镇化区域可持续发展提供参考。

基于城市印象理论的道路植物景观彩化规划

当前我国宏观层面的城市绿地系统规划和城市道路植物景观设计之间缺乏具体的参数指标导控,大多数城市道路景观普遍较为单一,存在“绿化有余、彩化不足”的共性问题。据此,文章基于城市印象理论,以浙江湖州南太湖新区道路植物景观彩化规划为例,提出城市中观尺度层面上的植物景观彩化规划和设计指标导控等策略,为改善城市道路景观品质和提高植物和植物景观多样性提供借鉴和参考。

基于碳汇作用的西安市城市道路植物配置优化策略研究

为使城市道路植物配置最大限度地发挥绿色植物的生态功能,进一步推动我国“双碳”政策的实施,选取西安市长安区西部大道东段道路作为研究范围,通过对实测场地内的植物群落调研,讨论配置现状与CO_(2)浓度间的关系;利用ENVI-met在实测分析的基础上,定量地从郁闭度、树龄和群落类型3个方面,给出针对西安市城市道路碳收支平衡下的植物配置具体优化策略。结果表明,道路绿带能对CO_(2)发挥一定的削减和封存作用;同等配置条件下的道路绿带中,绿带宽度越大、绿量越高的绿色空间的固碳作用也越高;通过线性拟合得出郁闭度、树龄和群落类型中,群落类型对CO_(2)浓度的影响程度最大。

不同土壤对下凹式绿地对城市道路中雨水的调蓄拦污效果分析

本文研究了红壤土、黄棕壤土和黑壤土三组实验装置分别对COD(化学需氧量)、NH4+-N(总氮)、PO43--P(总磷)、和SS(总悬浮物)的去除效果,实验结果表明:红壤土对COD和NH4+-N的处理效果稍优于其他两种土壤,而对于PO43--P的去除,三种土壤之间并没有明显的区别,黄棕壤土对SS去除效果稍高,为88.79%。由此可以得出结论:决定下凹式绿地土壤类型的影响因素并非取决于土壤自身的拦污程度,而是工程施工时土壤取用的便利性和土壤对绿地植物生长的适宜性。

数据驱动道路绿化:基于街景的多维品质评估

旨在通过人本视角和品质提升来改善城市设计和政策中的道路绿化品质。选取苏州主城区48个街道,采用道路平均NDVI、PGVI及日常活动网络可达性3个指标进行城市道路绿化品质的多维度评估,并筛选具有高网络可达性且低绿量的道路。进一步对3类低绿化品质道路进行绿化布局与设计成因分析。结果表明,通过提高道路邻近绿量和通透性、增加人行道和车道的绿化面积、转换视角创造立体绿化空间等措施,可以有效提高城市道路绿化品质。研究成果可为城市绿化规划设计提供有益参考。

绿色生态理念下城市道路设计方法研究

随着“双碳”目标的提出,在绿色生态视角下进行道路设计成为必然。文章以实际项目为例,介绍了项目概况,从生态体系、道路生态改造、断面和路面设计等方面探讨了城市道路设计中绿色生态理念的应用,以期为相关研究提供参考。

基于“绿色低碳”理念的城市道路技术要素的探索与实践

为了探究“绿色低碳”背景下,“绿色低碳”城市道路的设计方法,首先,从“绿色低碳”的概念内涵出发,探索城市道路全寿命周期内安全、生态、低碳的技术要素;然后,以某城市道路为案例,阐述“绿色低碳”城市道路技术要素的应用技巧和设计手法,为类似项目提供有益的参考。

城市道路绿化对极端高温干旱气候的响应特征研究

随着城市化的不断推进和全球气候变化的加剧,高温、干旱等极端气候频发对城市园林绿化造成重大影响.城市道路绿化作为城市绿地一种典型的带状绿地,其对高温干旱气候的响应机制尚不明确.以2022年南昌市所遭受的极端高温干旱气候为契机,对南昌市昌北经济技术开发区15条主次干道绿化树种进行受害特征调查分析,结果表明:①受高温旱害影响的植株分布呈现出一定的空间聚集性和规律性,南北向道路植物受灾较为严重,东西向道路植物受灾相对较轻;②随着树下铺装面积的增加,乔木、灌木受损情况呈上升趋势,随着铺装透水率的增加,乔木、灌木受损情况呈下降趋势;③乔木个体越大、长势越好,其抗干旱能力越强.建议加强对耐旱性较差、胸径小、树高低矮树种的日常养护,适当增加南北朝向道路的人工浇灌及管护频次,并适当减少树下铺装的面积,以此来缓解高温干旱对城市道路绿化的影响.

高速公路中央分隔带绿化植物对干旱胁迫的生理响应和抗旱性评价

以蜀桧、石楠、龙柏、紫叶李、圆柏五种植物为试验材料,采用盆栽控水法研究干旱胁迫对植物形态和生理生化指标的影响,应用主成分分析法、隶属函数法综合评价五种绿化植物的抗旱能力。结果表明:五种植物抗旱性由强到弱排序:蜀桧>圆柏>龙柏>石楠>紫叶李,研究结果可以为高速公路中央分隔带绿化植物栽植和养护提供依据。

基于综合分析法的城市道路植物景观调查与评价

以南京市建邺区32条城市道路植物为研究对象,在实地调查基础上通过景观稳定性和景观应用性2个维度中的10项评价因子对研究区植物景观质量进行综合分析与评价,并将道路植物景观划为Ⅰ级(优)、Ⅱ级(良)、Ⅲ级(中)和Ⅳ级(差)4个级别。结果表明,该区道路植物种类丰富,观赏树种应用比例较高,道路绿化带观花树种应用比例超过40.00%。道路植物景观综合评价体系中空间层次性、季相丰富性和物种多样性评价因子权重占比相对较高,其中景观综合评价分值最高的是JDZL,为7.21。32条城市道路植物景观中Ⅰ级路2条,占总体的6.25%;Ⅱ级路12条,占总体的37.50%;Ⅲ级路15条,占总体的46.88%;Ⅳ级路3条,占总体的9.38%。表明,南京市建邺区城市道路植物景观建设均衡性较好,部分道路植物景观质量需进一步提升。基于分析评价结果提出道路植物景观的提升措施,为城市道路植物景观品质提升提供参考。

城市道路空间全要素设计中绿化植物的应用——上海市宝山区祁连山路道路绿化案例探究

随着时代的进步,城市道路发展迅速,道路拓宽成为常态,另一方面,人们对城市道路的空间需求有了更进一步的要求。原本的城市道路空间形态受到了考验,如何在城市道路空间中平衡车行与人行的需求,如何协调好人们休闲与交通之间的关系,这是需要考虑的问题。在此基础上,建设“品质化”“全要素”的城市花园生态景观道路设计理念应运而生。城市道路空间全要素设计包含路面系统(机动车道、非机动车道、人行道)、城市家具、绿化植物、建筑立面、建筑前驱空间和地下管线等几部分。绿化植物作为其中有生命的个体,在整体空间要素中起着重要的作用。该文通过上海市宝山区祁连山路道路绿化案例研究,探讨绿化植物在全要素景观的道路空间中起到的作用。