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32 TRƯỜNG ĐẠI HỌC SƯ PHẠM KỸ THUẬT - ĐẠI HỌC ĐÀ NẴNG

drainage systems, and transportation systems should soil permeability. Grass mats should be densely
be considered to avoid hindrances and ensure distributed to effectively retain rainwater and reduce
efficiency. the rate of rainwater drainage. This is because grass
mats possess excellent water absorption properties
b) Corridor form
and the ability to create space for water to infiltrate
- Integrated with the vertical green system: The the soil.
corridor of vegetation mats is commonly employed to - The thickness of the soil layer: it can hold more
establish vertical green systems such as tree-lined water, creating space for water infiltration and
boulevards, pedestrian pathways, and green corridors. reducing the risk of flooding. This is also related to
Considering the integration of vegetative mats into the the care and maintenance of the soil layer to ensure its
transportation system and green spaces can enhance permeability. oil Particle Structure, Sandy Soil: Beach
not only water permeability but also create an sand can create porous structures within the soil,
environmentally-friendly environment for the enhancing its permeability and creating voids for
residents. water.
- Integrated with a drainage system: The form of - Water retention layer and irrigation system:
corridors can be arranged to establish natural drainage placed beneath the vegetation carpet layer, this helps
systems, aiding in the regulation of rainwater and capture rainwater and provides conditions for plants
preventing flooding. The plant in patch form designs to absorb water gradually. In there, an appropriately
can be combined with the plant in Corridor form to designed irrigation system can supply the necessary
create a comprehensive water permeation system. amount of water to plants without overburdening the
- Creating connections between green spaces: soil, thereby facilitating water absorption and
Vegetation corridors can help establish links between enhancing the vitality of the vegetation carpet.
various green spaces and green areas within urban - The mechanics of soil structure and vegetation
environments, forming an interconnected green cover also influence the absorption capacity. The
network system that supports water permeability and creation of voids within the soil and the structure
ecological functions [16]. forming water-holding layers can enhance the
absorption capacity. The choice of vegetation mat
Based on the botanical characteristics of greenery layout, whether in a patch or corridor form, can also
in construction, such as the root structure's impact on impact the absorption capacity of the vegetation mats.
the base ground, plant arrangement, the shading radius
of each species, leaf morphology, leaf color, tree
shape, as well as the season of leaf shedding. It is
possible to propose a fragmentation method for green
spaces and greenery in the form of patches for the
proposed parks, as shown in the map (Figure 7), and in
the form of corridors for the coastal roads in Da Nang
(Figure 8). Figure 9. Absorbency Enhancement Infrastructure
IV. CONCLUSION
In urban planning, the design of green landscape
spaces to enhance rainwater infiltration capacity in the
coastal areas of Da Nang City is an important and
valuable approach to ensuring urban sustainability and
protecting the marine environment. The city of Da
Figure 7. Green in Figure 8. Green in Nang, situated along the beautiful coastline, is
Patch form Corridor form currently confronting numerous challenges stemming
Vegetation mats within porous urban structures from urbanization and extreme weather conditions,
significantly contribute to enhancing the porosity of including annual natural disasters. Therefore, the
that urban space due to the water-absorbing capacity design of green landscape spaces along the coastal
of the vegetation mats. There are several structural areas can yield multiple benefits: (1). Reducing the
and material factors aimed at augmenting the water- risk of flooding and flash floods: it helps slow down
absorption capabilities of these vegetation mats: water runoff and prevents rainwater from infiltrating
- Types of grass and ground cover: Choose grass urban areas. This helps reduce the risk of flooding and
varieties with the ability to develop strong, deep, and landslides, safeguarding residents and infrastructure
extensive roots, which can create a dense root (2). Improving water quality: creating conditions for
structure and a rich root network, thereby enhancing rainwater to be filtered through vegetation, removing

ISBN: 978-604-80-9122-4