1. Sustainable urban planning of blue - Green infrastructure with the structural substrate with a biochar component.
- Author
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Petrová, Timea and Majorošová, Martina
- Subjects
URBAN planning ,GREEN infrastructure ,SUSTAINABLE urban development ,URBAN heat islands ,BIOCHAR ,URBAN plants ,URBAN soils ,TUNDRAS - Abstract
Application of the structural substrate for urban vegetation might be used as a sustainable urban planning tool for compensation of insufficient rooting volume, negative microclimatic, and soil properties in dense urban structures. The aim of this work is to evaluate the use and possibilities of the structural substrate with biochar components in Slovak conditions. Planting of woody plants (trees and shrubs) in exterior containers were chosen for an initial experiment to simulate difficult conditions of the urban environment (such as the occurrence of urban heat islands, substrate overheating, high evaporation, salination, insufficient rooting space). The research involved planting a control sample using a standard planting procedure in a substrate intended for container plantings and subsequently a structural substrate. The use of the structural substrate in the conditions of Slovakia has not yet been implemented. The structural substrate model consists of a mixture of gravel aggregate (75%), a classic substrate (12,5%), and a biochar component (12,5%). The choice of vegetation material considered the conditions of the reference area and there was chosen one representative of tree vegetation and one representative of shrub vegetation. Carpinus betulus 'Fastigiata' from climate 5b, was selected as a representative of tree vegetation. Photinia × fraseri was chosen as a representative of evergreen shrubs from the shrub form 6a. The choice of the reference area was limited by several conditions typical of the urban environment, namely close contact with the traffic road, exposed microclimatic conditions, and insufficient rooting space. The location in the town of Piešťany was chosen, near the traffic communication in positions with direct sunlight throughout the day. Piešťany is included in the map outputs of the climate division in zone 6b, which corresponds to -20.5 to -17.8 ° C. Measurements and data collection take place throughout the year, starting with planting. Quantitative and qualitative parameters of vegetation were recorded: bio-indicative properties of vegetation (soil moisture, soil reaction, exposure of vegetation to sunlight) and weather conditions. The second type of the monitoring was focused on dendometric data such as increments during the vegetation season and the root systems with the priority of determining the growth potential. The implementation evaluates the growth potential of vegetation resisting the unfavorable conditions of the urban environment with a modern method of growing in a structural substrate using a biochar component, in comparison with the classic type of substrate used. The use of modern technological elements in the urban planning environment is a tool for reducing the impacts of climate change and supporting sustainable urban development. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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