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"The Urban forest strategy (UFS) is a central part of an innovative overarching policy framework of the City of Melbourne underpinning the city's aim to create healthy ecosystems for people and nature" in the period between 2012-2040 (1 p9). The UFS outlines a scientifically-vetted long-term process to re-nature the city with a diverse selection of urban trees and open space for and with the citizens, combining elements of an eco-managerial governance arrangement with an open and reflexive co-governance approach. (1 p11). The Strategy concentrates on 6 areas to achieve its goals: canopy cover, forest diversity, vegetation health, water quality and soil moisture, urban ecology and environmental stewardship among citizens. (1)

The Climate Adaptation Strategy (CAS) was approved in 2016 and it includes various measures that aim to address various urban challenges (e.g. temperature rise, heat waves, heavy rainfalls, flooding)(Ref. 1, 2). The CAS is considered a key instrument for integrating green and blue measures in comprehensive planning.
Here, the NBS is presented with a focus on two specific measures: (Reference 1) Integration of the Urban Climate Map in urban planning, focusing on the preservation of existing air corridors/channels through open green spaces. (Reference 2) Integration of other climate adaptation measures in urban planning instruments through open green areas, community rooftop gardens, trees, and water elements. (Reference 1)

The creation of pocket parks is an urban initiative that has steadily grown throughout Budapest since 2010 (Reference 1). Most of these projects are citizen-led, but there is often support provided in the form of education and consultancy by initiatives such as the Contemporary Architecture Center (KÉK), or sometimes the local government (Reference 8). These spaces, typically covering an area of 1400 square meters only, are multi-functional and provide a space for small-scale food production, recreation, community sharing, and can be a fundamental element of neighbourhood rehabilitation. Moreover, it provides positive environmental effects such as water retention and the improvement of the area's micro-climate. Pocket-parks are critical in increasing the number of green areas in neighbourhoods that have limited space. (Reference 9)

The field is a 3.5 hectare of grassland, grazed by horses for over 20 years. After it fell vacant in early 2011, a group of local residents (“The Field Group”) negotiated a community lease with its owners, City of Edinburgh Council, with the aims of creating an orchard, creating/restoring semi-natural habitats and encouraging its use for quiet recreation and informal education. Members can volunteer their gardening labour or donate money. They can then participate in a garden run for the community – whether to pick the vegetables, learn fruit-growing, help to keep the chickens or just enjoy the space. [ref 1, 2]

The School Garden of Széchenyi István University, Apáczai Csere János Faculty in downtown Győr was reestablished by the Vice Dean of Apáczai in 2013. Apáczai’s new school garden trains university students studying education on properly organizing and maintaining the school garden with ecological methods in the format of an optional credit course at the university. Alongside the university students, elementary school student groups are responsible for the planting, maintenance, harvesting, seed collection and other activities under the supervision of teachers and in Apáczai’s garden. The modern school garden movement is rapidly growing since 2013 due to its recognized value in current pedagogical movements, and role in education for sustainability (Reference 1). In 2019, a raised garden bed was also added to the garden, which made that part of the garden accessible to wheelchair users as well. (Reference 2)

Mercedes-Benz helps in the Reforestation of the Park of the Pena, in Sintra: "As part of its social responsibility actions, and as a socially responsible company and involved in its community, the Daimler Group in Portugal decided to intervene and help in the reforestation of the Pena Park in Sintra after it was flogged in 2013 and 2015 By violent storms that caused the fall of more than 2000 trees." (ref 1)

The renaturalization of the water canal Hirtenbach project was part of the larger city-wide initiative that aimed at the naturalization of different parts of the city's drainage system including small trenches and streams. The initiative aimed to decrease the risk of floods, improve the water quality, protect the local flora and fauna from the pollution, as well as provide for an additional recreational area for the citizens. (Reference 1)
In 2000, natural remodelling or the creation of near-natural structures began in sections. A 20, 000 m3 retention basin was also built. These actions improved flood protection and ecology of the area, and it provided local recreation opportunities. However, a study conducted in 2014 revealed that the restoration measures brought positive changes, but it was not enough to achieve a “good water status” defined by the European Water Framework Directive. Intensive care from silting and lush plant growth, wide margins, and the reduction of nutrients coming from the drainage and agriculture, need to be addressed. (Reference 2)
A new landscape is expected to be created when the alder trees grow. Waterbirds and waders, as well as insects like dragonflies, bees, butterflies and crickets, have been observed in the area (Reference 3).
The large drainage system of the city of Hannover includes many small trenches and streams with a total length of 152 kilometres. The intervention in Hirtenbach involved renaturalization worked on the total length of approximately 10,5 km (of which 3,3 km in the urban area). (Reference 2)

Green roofs were created on vehicles in the Spanish cities of Barcelona, Girona, Córdoba, Valencia. This initiative is based on the project of Marc Grañén, who developed PhytoKinetic a project for the development of moving gardens. (ref 1) The city of Palma de Mallorca was also considering its introduction as a measure of sustainability. (ref 1) The intervention, however, remained in the pilot stage (ref 1 and 4).

The “Animal Species Aid Program”, also a part of “More Nature in the City” project of the Department of Environment and Urban Green, mapped out the occurrences of wild bees in Hannover including Leineaue, Alte Bult and the area of Berggarten and Leibniz University. With this program, 244 wild bees and wasp species were detected in Hannover in 2013/2014. In addition to the inventory, the program has also provided care instructions tailored to the individual species (like frequency and timing of lawn mowing) in order to protect their habitat.

The “Wild Bee of the Year” was launched in 2013 by the Baden-Württemberg Wild Bee Cadastre Working Group in cooperation with the State Institute for Bee Science and the beekeeping associations of Baden-Württemberg to draw attention to the danger to native wild bees throughout Germany. The program is part of the city of Hannover’s activities on biodiversity. As an example, in 2012/2013, occurrences of the endangered nightingale were recorded, extremely rare and highly specialized tree beetles were mapped, and amphibians and dragonflies were stocked in selected small waters. Specific care measures for individual biotopes were provided along with an overall overview of the ecological qualities of the city of Hannover.

(Reference 1 as of 2015. No information was found with regards to the current status of the project)

The project focused on the creation of a rooftop community garden located near a metro station in Bilbao that aims at educating the residents of the neighborhood on how to grow vegetables, how to eat healthily but also offers free practice hours for every person that wants to have their own plot. The project was initiated by the Bilbao's Center of Innovation, a center that aims to contribute to the economic, strategic and solidarity development of the Municipality of Bilbao (Ref 1).