Keywords: rainwater management; Garden; Sponge city concept; Specific application
Sponge city theory is an original theory in line with ecological and environmental science in 2 1 century, which has made outstanding contributions to solving urban water disasters and waterlogging. The outstanding feature of this theory is the elasticity of water. So sponge city can be replaced by another word, water-elastic city. In the long years, human beings are in a state of demand for a large number of resources, and the existing resources are gradually exhausted, which makes various ecological environment-related problems emerge one after another. The theory of sponge city follows the sustainable development of ecological environment and aims to build the city into a sponge, which can better adapt to the climate and various natural environments and fully realize the scientific and rational utilization of rainwater. Therefore, it has great practical value in urban landscape design.
1, Overview of Sponge City Principle
The principle of sponge city is to build the city into a sponge, which can generally better adapt to the climate and various natural environments, so as to realize the scientific and rational utilization of rainwater and effectively absorb and discharge rainwater at critical moments. The principle of sponge city has certain practical significance and feasibility for urban landscape construction. In the process of designing urban gardens, it is necessary to make scientific and effective use of sponge cities, which can effectively absorb and discharge water. And using the principle of sponge city, it can better solve the phenomenon of urban waterlogging and rain and flood, and play a role in regulating rain. This principle makes cities more flexible, which is closely related to the development of urbanization and complements the concept of ecological sustainable development. However, in the practical application of this theory, it is necessary to take corresponding plans to implement it according to specific conditions in order to achieve better results.
2. Principles to be followed in building a sponge city
2. 1 Ecological effect ranks first.
In urban landscape design, the ecological effect of the city must be put in the first place by using the theory of sponge city. In the past, in the process of urbanization, China only paid attention to economic benefits, did a good job in infrastructure construction, and focused on the construction of ditches, pipelines and pumping stations, which was usually called gray infrastructure. However, the construction of sponge city is a kind of green engineering construction. In its design and construction stage, we should pay attention to environmental characteristics and ecological environment factors, collect and discharge rainwater scientifically and effectively, and better protect the urban ecological environment. For cities with a long history, the local rainwater system is dilapidated and aging, which is easy to cause rainwater runoff. At this time, it is necessary to build some new rainwater systems to ensure the effective collection and reasonable discharge of rainwater. The application of sponge city in urban landscape design is closely combined with the principle of ecological benefit first.
2.2 Pay attention to the safety of engineering construction.
Sponge city construction should be carried out safely and orderly. In the process of building a sponge city, it is necessary to pay attention to protecting people's lives and property, which requires designers to first understand the city's water resources, precipitation and precipitation, so as to make feasible design plans and better build a sponge city. Of course, the application of sponge city theory in urban landscape design also needs to follow the principle of safety and effectiveness.
2.3 improve the relevant planning work
Urban landscape design involves the application of sponge city theory, in which urban rainwater devices, rainwater pipe and canal devices and over-standard rainwater runoff discharge devices complement each other. Therefore, in urban landscape design, it is necessary to do a good job in the construction planning of sponge city, so that urban rainwater devices, rainwater pipeline drainage devices and over-standard rainwater runoff drainage devices can work together. And in the specific planning work, it is necessary to promote the organic combination of green facilities and gray facilities, and plan and build a sponge city through source emission reduction and terminal adjustment. The government should also vigorously support and cooperate with the construction of sponge city to ensure the efficient planning of sponge city.
2.4 Ensure the systematicness and integrity of the design.
When designing the construction of sponge city, we must make the design complete and systematic. In every construction work, we should fully grasp the actual situation of urban water cycle, the existing rainwater facilities and the utilization of water resources in the city, and then design a complete and systematic sponge city according to the actual needs of the city. It is necessary to meet the needs of urban drainage and be consistent with urban construction.
3. Practical application of ocean city theory in urban landscape design.
3. 1 Adhere to the principle of ecological diversity.
In urban landscape design, we should adhere to the principle of ecological diversity when applying the theory of sponge city. Rainwater falls from the sky to the soil surface, and then it can be filtered by the soil layer to play a preliminary purification and cleaning role, and these rainwater can be collected and recycled. For example, clean water after soil filtration is a green and environmentally friendly way to flush toilets and water flowers. It can not only effectively save water resources, but also promote the recycling of water resources. In order to better highlight the principle of ecological diversity in urban landscape design, it is necessary for technicians to construct a reasonable filter layer to realize a strong water permeability and drainage system and improve the drainage performance of pavement. Even when waterlogging and rain flood occur in the city, it can protect the urban drainage facilities and rainwater system and reduce the damage to the city.
3.2 Reasonable selection of sponge
Sponge originated from sponge city theory. Sponge is widely used at present, which can solve the problem of urban drainage and promote garden design. But the practical application of sponge should be combined with the actual situation of the city. Because of the different hydrological characteristics and natural geographical conditions of many cities, it is necessary to conduct full investigation and research on cities in the design stage. Only cities suitable for using sponges can use them. The staff should analyze the precipitation situation in the city, choose the sponge, and make full use of the sponge in the urban landscape design.
3.3 Urban landscape design with the help of planning and management equipment.
With the help of planning management, urban landscape design can be effectively carried out, and the specific situation of urban water resources can be better grasped, thus contributing to the smooth progress of urban landscape design. By planning and managing the hydrological information of the city and the relevant data of the urban drainage system in the equipment, designers can be helped to plan and construct urban gardens scientifically and reasonably, thus better improving the construction of sponge cities. In addition, in the process of designing urban gardens, workers need to accurately grasp the urban precipitation data, have a general understanding of urban water pollution, do simple water pollution treatment, and know the water resources of urban daily gardens in time, and then rationally design urban water pipelines, introduce the water in the pipelines into the gardens, or introduce the water into the urban gardens in the form of precipitation, which can supplement and adjust the daily water demand of urban gardens.
4. Conclusion
Sponge city theory is widely used in urban planning and construction, and its role is also obvious. It can effectively alleviate the phenomenon of urban waterlogging, promote the rational utilization of water resources and contribute to the sustainable development of the ecological environment. When applying the theory of sponge city in urban landscape design, it is necessary to fully understand the situation of urban water resources, formulate appropriate landscape construction plans, and show the ecological diversity characteristics of urban gardens.
Reference [1] Sun Wei. The application and thinking of the construction theory of "Sponge City" —— Taking the landscape design and construction of leisure sightseeing road and wooden plank road in Yellow River Bund Park in Yinchuan Binhe New District as an example [J]. Modern horticulture, 2015 (11) [2] Wang Meng. 20 16[3] Li Hanrun. Preliminary study on the "slow rebound" landscape design of residential areas based on the theory of sponge city [D]. Sichuan Agricultural University, 20 16[4] Lin Jianrong. Key points of landscaping construction technology and safeguard measures [J]. China Horticultural Abstracts, 2012 (65432) 2012 (11) [6] Sean, Yang Jiacheng. Key points and technical analysis of landscaping construction [J]. China Folk Houses (next issue), 20 12( 10)[7] Liu Shuying. Research progress of landscape ecology-
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd