Increase or improve urban vegetation cover to help reduce outdoor temperature

Ametzola is a neighborhood of Bilbao District 7 located on the left bank of the Bilbao estuary. In 2005 the construction of a park began since the neighborhood was seen as being alienated from other quarters of Bilbao and solicited a regeneration and integration into the urban life of the city. (Ref 1)

As part of World Tree day celebrated on March 21, 2017 the Sintra Service for Protection of the Nature and the Environment (SEPNA) as well as the Sintra Branch Segura School carried out several education workshops for school children to inform about the importance of tress for our natural environment and carried out afforestation and reforestation actions inside the green spaces of Sintra. (1)

To test the newly developed Green Factor Tool for the City of Helsinki, with a focus on water management, two test sites (ätkäsaari pilot block and the three model yards in Kuninkaantammi) were created at residential blocks in Jätkäsaari and Kuninkaantammi. The tool itself is an Excel interface that calculates the quantity and quality of the city's green spaces per unit of area, It is part of the larger iWATER (integrated stormwater management) project (Ref 2). Specifically, after testing it on these two pilot sites, it is to support land use planning processes by providing a way to account for the quantity and quality of green space. The project aimed to analyze the cost-benefit of implemented sustainable stormwater solutions, compile stormwater-related planning tools as well as increase and strengthen the capacity of cities to work with stormwater issues (ref. 2).
One of the key objectives of developing the green factor method was to create green urban environments that have social value. Also, functionality was the second most important and cityscape (or landscape value) was the third most important category in green factor scoring.

This project deals with the creation of a green roof and a green area around the new headquarters of the IDOM Group (an independent multinational company that offers professional integrated services in Consulting, Engineering and Architecture around the world), located in an old French warehouse (a customs warehouse) on the Deusto canal in the port of Bilbao. It has an area of ​​14,400 m2 dedicated to offices, research and development spaces such as white room and workshop prototypes, and social spaces. (Ref 1)

The experimental green facade system consisting of four different types of green wall was installed in Nurnberg from 2013 until 2016 on Adolf-Braun-Strasse 33 and is an integrated greening system that enables self-sufficient, low-maintenance "hanging gardens" on facades and other vertical walls. The aim of the project is to experiment with recreating green spaces in the streets, asphalt surfaces, and backyards of some parts of Nuremberg overcoming numerous constraints and competing uses (1) The implementation has helped improve air quality, thermal insulation, wind and rain protection and lowering local temperatures in its proximity. (2)

The Reconstruction of the Southern Bank of Schütt Island is the starting point of the regeneration of the Old City of Nurnberg. Within the project, the access to water and recreational functions of the river banks were improved. (1) The project was completed on an 1800 square meter large area, which includes open meadow areas, a 170-meter-long bank terrace, trees, and benches. (6) Public participation through co-planning and consultation was also involved in the planning process. (1)

The Podlasie Opera and Philharmonic – European Art Centre in Białystok ("green opera") in Białystok, is known for its green roofs, green walls and extensive gardens, which perfectly harmonize with the surroundings. The green area serves as a platform for cultural events and successfully promotes the city. Opera gardens are divided into several levels with lawns, walking paths, bridges, sculptures, and small ponds. Different green elements of the building reduce heat effect and noise, increase the thermal insulation of the building, improve local biodiversity and limit rain drainage to the city centre [1].

As part of a larger project, this project aimed at creating a vertical garden in the Levante Square, in the Deustro neighborhood, the city of Bilbao. The intervention was initiated by the Bilbao's municipality in 2016 and aimed at creating a green area that was a bit unconventional and artistic at the same time. The landscape design incorporates local elements such as the trawlers, the cliffs of the Cantabrian coast and the local architecture, integrating nature and tradition (Ref 1).

The company running the Zabalgarbi waste disposal site manages a solid waste–to-energy plant and also houses a mechanical biological treatment (MBT) plant, a composting plant, a landfill and a leachate treatment plant. During construction of the first plant, Zabalgarbi regenerated and recovered the entire Artigas-Arraiz area covering 108 hectares. The area was degraded by shaft mining activity and an opencast quarry. The project aimed at the reforestation and landslide mitigation of this degraded area. Today the area has been reforested, trails were built and space provided for people to enjoy themselves in gardens, picnic areas and along forest tracks. (Ref 1)

Vertical Garden is a 110 m2 garden installed in 2015 by Singular Green in front of the Hotel HM Tropical, as an outdoor project. (Ref 1) In October 2016, there was another 100m2 of garden installed. In 2020, there are also other companies that are trying to install vertical gardens on the island (Ref 4). There are special plants that were chosen due to its adaptive characteristics, as well as a special arrangement of the plants for aesthetics (Ref 1).