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The project aims at realizing a large urban park to link the city and the sea coast. It is a project of significant social value, as it takes place in a neighbourhood which has been in a state of decay for 50 years. The intervention includes new facilities for recreation and sport, but first of all new plantations and the creation of rooftop gardens. It would be the second-largest park of the city, by linking the city and the sea. (Ref.1.)

The project involved the revitalization of the area in Cacovická island in order to create conditions for year-round recreation and relaxation in the natural environment and to restore the ecosystem in the floodplain of the river Svitavy (Ref. 3). The project also restored the cultural heritage of the area by integrating elements of Celtic heritage within the design, as well as environmental education (Ref. 4).

The Bahlui river was prone to floods especially during spring and autumn and as a result of the fact that for almost 40 years there has been no work for the decolouration and sanitation of the river and the industrial enterprises in the county have discharged polluting substances in water (mainly nitrogen and phosphates), Bahlu River has become a polluted river. In addition, some citizens of Iaşi have discarded waste in its bed (especially in peripheral areas). In 2011, a larger project funded by the EU, implemented the regularization of the river. (1)

EPAEM (Euromediterranean public development establishment) launched the development a new park of 14 hectares. Located in former industrial area at the gates of the northern districts of Marseille, it is considered to be one of the poorest districts in France (Ref. 1). The planned park Aygalades is divided into two parts: the southern part of 4 hectares called Bougainville Park and the northern part of 10 hectares which runs along the Aygalades river (Ref. 1). Development work on Bougainville Park is set to begin in September 2020 with completion in 2023 (Ref. 12). The park is described as "the first step of a large project to restore a highly degraded industrial site" (Ref. 12).

To address the mismanagement and illegal deforestation in the Changa Manga forest, the Punjab Government in Pakistan initiated strict actions with the help of the Forest Department between 2014 and 2017. Activities included planting new trees and taking action against illegal deforestation. Over the years, mismanagement and illegal deforestation decreased this woodland by 75% (measured in 2012) (2). The Government of Punjab approved the “Afforestation in Blank Areas in Changa Manga Plantation” project for the duration of three years from 2014 to 2017 aimed at the afforestation of a total area of 200 acres on flow irrigation during 2014-15 and maintenance of afforestation during the two subsequent years (2015-17) (4). Changa Manga Forest is one of the world’s oldest hand-planted forests, dating back to 1866 in Chunian City. It spreads over about 5065 hectares and hosts a wide variety of flora and fauna. The forest is home to 14 species of mammals, 50 species of birds, six species of reptiles, two species of amphibians, and 27 species of insects (1). Some exquisite tree families, such as Sheesham (rosewood). white mulberry and Kikar trees are found in this woodland (2). It also includes a wildlife preserve, which was launched in 2005 by the World Wildlife Fund (WWF) Pakistan to protect white-backed vultures and ensure their captive breeding in the forest (3). Currently, Pakistan is losing forests at thrice the rate of the other South Asian countries. One of the major benefits of the Changa Manga Forest afforestation project was that it increased honey production by 70% in the different areas of the forest park (5).

In 2017, under a bigger project, the municipality of Sintra started the work for the rehabilitation of an area that included beaches and rivers, such as the Mata river. The NBS solves a problem of accumulation of water and sludge that was unsolved, through the recovery and cleaning of Ribeira da Mata (small river/brook), planting trees and promotion of an improvement in water quality and sand on the beach.
(1)

The renaturalization of streams is a common strategy for improving the ecological quality of water bodies as mandated by the European Water Directive. For that reason, parts of the Aa stream in Münster upstream until its flow into the Aa lake covering 2.6 km were renaturalized from 2012 to 2013. Renaturalization is a means to restore the natural river banks, local ecosystems of the Aa rive and improve the water quality of the Aa lake (Ref. 1 and 3).

The 18 km long Rheindorfer stream flowing into the Rhine has faced increased urbanization, industrial activity and surface sealing over the last decades of the 20th century. As a result, numerous interventions were made to its original structure, such as the creation of a concrete bed for the stream and the straightening of the stream course. Meanwhile, an increasing amount of pressure was put on its water carrying capacity. In order to improve the flood retention capacity of the stream, the renaturalization project of the stream was executed in some parts of the water body. The project aims were 1) to restore the natural course of the stream and the state of the riverbeds, thus enhancing the stream's capacity to buffer floods, 2) restore the natural biodiversity of the floodplain and 3) to create a recreational area for locals (1,2).

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)

A local government-led project of the renaturalization of the part of the Weser river shore. The initiative aimed to restore part of the river bank to its natural state and to create habitats for the typical local flora and fauna. Additionally, a sand beach for the public was created. The project aimed to increase biodiversity, increase the river shore protection and water management, as well as to improve public access to the recreational area at the water and the attractiveness of the river landscape (Ref. 1, 2, 5).