相关实验视频
Updated: Jun 5, 2025

05:07
Assessing the Particulate Matter Removal Abilities of Tree Leaves
Published on: October 7, 2018
6.7K
基于长沙大气颗粒物保留的城市大桥的种植设计
Linya Kong1, Xinhao Huang1, Fan Zhu1
1College of Landscape Architecture and Art Design, Hunan Agricultural University, Changsha, China.
International journal of phytoremediation
|December 11, 2024
概括
这项研究表明,某些植物,如Ophiopogon japonicus,在超桥上更好地捕获大气颗粒物 (PM). 植物结构和叶子特征显著影响PM保留,指导更好的绿化设计,以获得更清洁的城市空气.
科学领域:
- 环境科学 环境科学
- 城市生态城市生态学
- 植物生理学 植物生理学
背景情况:
- 过桥对大气颗粒物 (PM) 污染有很大影响.
- 了解工厂的PM捕获能力对于优化超桥绿化设计至关重要.
研究的目的:
- 评估11种常见植物物种在超桥绿化区域中的PM保留能力.
- 为了确定增强PM捕获的植物特征和结构特征.
- 为减少PM提出一个优化的绿化设计方案.
主要方法:
- 在中国长沙收集了11种植物的叶子样本,超越了绿化场所.
- 测量每单位叶面积 (Mleaf) 和每单位土地面积 (Mland) 的PM保留率.
- 分析了叶面微观结构,叶面积指数和植物高度与PM保留的关系.
主要成果:
- 奥菲奥波波 (Ophiopogon japonicus) 的叶子含量最高 (1.59 g/m2),而南迪纳 (Nandina domestica) 的叶子含量最低 (0.23 g/m2).
- O. japonicus,Fatsia japonica和Magnolia grandiflora展出了最高的Mland. 这种植物是世界上最大的植物之一.
- 叶子形态 (宽沟,树皮) 和植物高度是保持PM的关键因素;多层的树冠 (树木-灌木-草本) 显示出高潜力.
结论:
- 植物物种选择和结构设计对于有效捕获超桥绿化中的PM至关重要.
- 特定的植物特征,如叶子纹理和树冠结构,可以用于PM减少策略.
- 该研究提供了一个设计方案,以提高城市超桥环境中的PM保留率.
相关概念视频
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
40
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
40
Design Example: Sustainability in Concrete Building
159
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
159
Design Example: Aggregate Gradation
91
The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
91
Conservation of Mass in Moving, Nondeforming Control Volume
773
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
773
Design Example: Maintaining Level of an Embankment
52
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
52
Design Example: Alignment of a Road Line Using GIS
41
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
41

