All countries should worry about having green infrastructures, create more green areas just as houses for sale in rosarito, reuse rainwater instead of throwing it down the drain and create sustainable pavements among other actions, since working with nature and not against it is socially profitable , environmentally and economically. A country that sets an example is China, since by 2020, sixteen sustainable pilot cities will be built in an area of more than 450 square kilometers.
There has been a lot of talk that demand for water will increase in all sectors, but little has been done. The challenge we must all face is to meet this demand in a way that did not exacerbate the negative impacts on ecosystems as well as improve natural capital and support a competitive and efficient economy in the use of resources. Solutions based on Nature can be profitable and, at the same time, provide environmental, social and economic benefits.
One of the solutions are sustainable cities, where green infrastructure approaches are applied in urban landscapes, mainly to improve water availability. It is, above all, to prevent rainwater flooding cities while implementing ways to conserve it for reuse instead of simply channeling it down the drains. It has been shown that payment schemes for environmental services and green bonds generate an interesting return and reduce the need and costs of a larger infrastructure, often more expensive, necessary for the management of water resources and the provision of services of water supply and sanitation.
This concept has already started in China. The objective of the project is for 70% of rainwater to be absorbed and used through improved water permeation, retention and storage, purification and drainage, as well as water savings and reuse. This goal should be achieved in 20% of urban areas by 2020 and 80% of urban areas by 2030. It is expected that through this project mitigate the negative impacts of urban construction on ecosystems natural
The application of nature-based solutions throughout the city, such as green roofs, permeable pavements and bioremediation, together with the restoration of wetlands and urban and peri-urban rivers, are the basis of this national initiative.
Initial results include alleviating urban waterlogging, improving water-related ecosystems, promoting industrial development, and increasing overall public satisfaction. The central planning of the policy, actively aligned with the implementation at the local level, has incorporated the concept of the sponge city into urban planning and ecological restoration at the city and district levels.
Some examples of measures include the installation of green roofs, walls and permeable pavement, as well as the revitalization of degraded lakes and wetlands, which absorb excess rainwater. Rain gardens and bioretention systems are then used to collect runoff and eliminate certain contaminants. Part of this water is returned to the natural system and stored to ensure the availability of water for irrigation and cleaning purposes during periods of drought.