Maintenance and management of urban nature

The Aa promenade, created in 1950 to provide the citizens of Muenster with a green experience trail in the inner city, was redeveloped in the 90s with several planting measures on riverbanks, walls and in adjacent areas. Next to a brochure, a nature trail which combines the existing recreational with an educational component was created with 18 site-specific signposting points. They cover multiple benefits and ecological functions of urban green spaces, city trees and green facades/walls (microclimate regulation, air quality, CO2 capture), anthropogenic threats, unknown biodiversity hotspots and natural monuments (Ref. 1, 3 and 6).

The Knowledge Mile Park initiative in Amsterdam aims to transform the long, busy and traffic-heavy street in downtown Amsterdam into an environment greener, more sustainable and more livable through the implementation on various Nature-based Solutions (9). Smaller projects include the creation and maintenance of pocket parks, green walls and facades, green roofs and living labs. The idea of the initiative came from the Knowledge Mile Community that aims at making Amsterdam more green, clean and smart by means of innovative solutions regarding air quality, climate change resilience, biodiversity and social cohesion. (1) municipality of Amsterdam and the business investment zone BIZ Knowledge Mile are working together with partners on the realization of the project (9)
The project is still ongoing, although parts of the Knowledge Mile Park are already created in 2016 including one living lab, two green roofs, a green canopy and a pocket park and other parts are planned such as the smart green wall (1)

Monglong Park was rehabilitated in 2012 with the explicit aim of strengthening social ties. The site is a wooded area of 4 hectares to the south of the Bellefontaine district. Unknown until its redevelopment, it constitutes a true ecological niche for the city and has great biological richness and landscape. The associations of gardeners and the gardeners of the Bellefontaine neighborhood, including the Maghreb and Mong communities, were involved throughout the construction of the park (Ref. 2).

"Anglers Country Park (and a local nature reserve) is dominated by a lake, surrounded by grassland, woodland and a wetland area." "This originally farmed landscape was dramatically changed when it became one of the deepest opencast mines in Europe, reaching a depth of 250 feet." Restoration work began after the mine closed, creating the country park. (Ref. 1, 2)

The initiative involves establishing beehives on the roofs of the Catholic University of Lublin and the Centre for the Meetings of Cultures. It seeks to provide the habitat for the bees in the city, help in pollination, educate the society about the bees and shape more ecologically-friendly attitudes among the students, faculty and visitors. It should also produce honey that can be sold or distributed free of charge, which can serve in a promotional tool of the two institutions. The Centre for the Meetings of Cultures has additionally opened a garden to provide food for the pollinators [1,2,3,4,6]. In 2020, the initiative is still ongoing and expanding. Every year, the university organizes a competition about the life of bees for various age groups [7].

Wakefield Council is "responsible for managing over 2650 acres of grass in parks and countryside areas across the Wakefield district (this includes cutting the grass)". Since 2015, there are small areas where "the grass is being left to grow" naturally for environmental benefits. (Ref. 1) The objective of the project by leaving derelict some grass areas are that "the environmental benefits of leaving some grass to grow naturally include encouraging wild flowers to grow which will support bees and other insects, and aiding drainage to reduce flood risk" (Ref 1).

The Polder Roof is a green roof originally installed on the top of the Old School Amsterdam, Gaasterlandstraat, Amsterdam with innovative controllable water storage and drainage system on which crops are grown, solar panels are installed and that provides space for recreation. (1,2) Thereby, it combines multiple benefits including the reduction of heat stress, noise reduction, sustainable energy provision, biodiversity, food production and climate change adaptation (2,7). The Polder Roof was a pilot project that won an innovation award and is viewed as an example for urban climate change adaptation solutions. (2).

In 2019, due to the renovation of the former Old School building, it was necessary to relocate the Polder roof to a different place. The Polder Roof is a completely de-mountable system, made up of crates with a sedum layer on top, thus it could be removed quite easily from the Old School roof and put somewhere else. In the name of circularity, the sustainable drainage system was moved to the roof of the South Food Bank building. (10,11,12) With the relocation of the Polder Roof system, however, the size of the green roof has decreased to 1200 sqm from 2010 sqm (2).

With the relocation of the railways between the Hauptbahnhof and Pasing a large area became available for an infill development strategy. The redevelopment of central railway areas of Munich is in line with the city's guidelines for sustainable development (Perspective München) referred to as compact - urban - green. The initiative is aimed at implementing 7500 new flats and creating 15000 new workplaces in total, which are supported by green recreational areas. (Reference 1) The project consists of six separately planned parts, some are already partially finished. (Reference 2) This NBS discusses Birketweg, one of these parts, which is 60 hectares large.

Manchester’s Stevenson Square was given a green makeover. In addition to securing funds from Manchester City Council, the project underwent a substantial crowd fundraising campaign to transform the square into an ‘urban oasis’ and provide street trees, permeable pavements and planters.The pavement was extended on one side of Stevenson Square which enabled street trees to be planted. More tree planting undertook on the central reservation and a green roof was designed to collect and store rainwater. Self-irrigating hanging baskets were installed on lamp posts (ref 4).

Coal mining in the Dearne Valley damaged the Dearne Valley landscape. To address these problems the Dearne Valley Green Heart partnership was formed in 2006, but the intervention discussed here is specifically related to the developments between 2012 and 2015, when it was founded as a Nature Improvement Area. It is part of the South Yorkshire Delivery Programme and part of the Doncaster Council as also being part of the Doncaster Green Infrastructure Strategy (Ref 1, 2).