Climate – Mainz – Cities: greener, less gravel – knowledge

Mainz / Koblenz / Trier / Kaiserslautern / Ludwigshafen (dpa / lrs) – With a new law on greening and design, Mainz wants to bring more plants to roofs, facades and gardens. Marianne Gross (SPD), the organization’s president of the construction department, said Tuesday when the new guidelines were presented.

The new law is set to go into effect on October 1 and will apply to the entire city area, not just the city center. Regarding new construction projects. The old gardens have a grandfather. But Gross hopes that more green space described for new construction projects will have a signaling effect and that one or the other front gardens filled with gravel or crushed stone will disappear. The subsequent voluntary greening of existing buildings can be financially supported by the ‘Roof and Facade Greening’ funding program of the Mainz Climate Protection Foundation, said Janina Steinkrueger (Greens), Head of Environment.

In addition to the ban on gravel and crushed stone, the new law stipulates, among other things, that at least one tree must be planted for every 200 square meter plot of land that has not been built. 15% of the plot should be planted with shrubs. Turf floors or flat covers with wool or textile fabrics are not considered greening.

In the future, one tree for two parking spaces and two trees for six parking spaces will be provided. Flat roofs of 15 square meters should be green on a large scale. Facades with a continuous area of ​​\u200b\u200b20 square meters or more should also be greened.

According to Steinkrüger, some sort of modular system with possible alternatives and offsetting green spaces elsewhere should ensure that builders remain flexible. This means, for example, that if you want to cover a half flat roof with a solar system, you have to plant more green space on another part of the property, such as shrubs in the lawn. The head of the environment department spoke of a “colorful bouquet to make real estate greener”.

According to the city administration, compliance with the regulations should be checked randomly. Indications of potential violations usually come from the neighborhood. In addition, builders will have to sign a “Declaration of Conformity” that they have complied with the rules. However, as a rule, disputes are settled amicably.

– A look at other major cities in the Rhineland-Palatinate:

According to the city of Koblenz, it also cares more about the environment in the fight against climate change. Many development plans contained regulations for green roofs or facades. Green Roofs are financially supported as part of the “500 Roof Program”. “In principle, it works to reduce energy loss by insulating the roof skin or the upper floor ceiling and thus reduce carbon dioxide emissions,” explains city spokesman Thomas Knack. Koblenz create an cadastral register for the green roof.

The concept of climate protection provides, among other things, to the planting of trees in the city to reduce its heating in the summer. Existing tree beds should be improved to protect biodiversity and as an insect pasture, possibly by caring for the local population.

According to the city administration, three climate managers in Trier are working on a conservation concept with proposals for more environment in the city. A special pilot project is soil moisture sensors, with which moisture is measured under trees – especially under young trees. With the data transmitted, irrigation should be more targeted than before. Citizens can also take care of trees and beds. This includes watering young trees, loosening tree nets, and reporting damage and risks in the beds.

Kaiserslautern City Council passed a new law on the design of green and open spaces on Monday. It serves to prevent “malfunctions”, as announced by the Palatinate municipal administration. These include “gravel gardens” and artificial turf. This is no longer allowed. In addition, the design of the plots and the city of Kaiserslautern will be modernized with greenery. The law also aims to help promote biodiversity and support the implementation of the municipality’s climate adaptation concept.

Ludwigshafen stresses the importance of greening flat roofs. The second largest city in the Rhineland-Palatinate has announced that this has been a common standard in development plans for many years, based on climate reports in residential, commercial and private areas, among others. “In some cases, laws have been put in place to counter the increasing closure of front gardens,” a spokeswoman said. Additionally, surface water charges can be reduced through surface greening and de-sealing measures.

© dpa-infocom, dpa: 220502-99-129967 / 4

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