Urban nature and ways of protecting, designing and even mimicking natural processes are some of the most popular themes inspiring humanities and natural science studies in different disciplines around the globe. Urban nature, green infrastructure and nature-based solutions are three intertwined concepts. This paper will highlight some of the many visions for urban nature (e.g., four urban natures: native, cultivated, designed/horticultural and spontaneous natures) and interpretations of nature-based solutions. While there are some similarities in the interpretation of urban natures by different disciplines, some significant differences exist. This paper analyses and synthesises knowledge from divergent theoretical concepts of urban natures in Europe and Australia, and the associated ecological concepts of novel and designed ecosystems. The complexity of urban natures and native landscapes has fostered the development of several typologies that often lead to misunderstanding between discipline areas and difficulties with practical implementation, such as in urban planning or landscape design. We argue that differences in interpreting the scope of urban nature are often underlined by the specific socio-political, historical, cultural and ecological contexts of a country or region (e.g., Australia and Europe). By applying an interdisciplinary approach, we explore the concept of urban natures by analysing and synthesising links between different disciplines. A transdisciplinary perspective is an important premise for collaboration between ecological sciences and landscape architecture in many restoration projects, or when social and ecological sciences jointly address societal challenges with the help of nature-based solutions co-created using participatory approaches. The latter highlights the role of transdisciplinary research to link practitioners, policymakers and scientists, helping to engage with citizens and inform design. The analysis of several examples from Europe and Australia allowed us to depict different approaches to existing urban natures and methods of their design, enhancement and conservation. These examples highlight that different urban natures are sources of inspiration for nature-based solutions that can be successfully implemented in contemporary landscape and planning practice.
The urban densification agenda for the Australian Capital Territory announced in 2012 as well as the climate-related impacts (such as flood and rising temperature) have made the role of green infrastructure in this city more critical than at any other time. The Living Infrastructure Plan for Canberra was proposed by the local government in 2019 and it is currently being developed. However, there is a lack of understanding of the variety of urban green infrastructure characters, associated urban green space types, and their contributions to the green infrastructure plan. Therefore, this research aims to study the existing types of urban green infrastructure and green spaces in Canberra and investigate their potential sociocultural and ecological contributions that need to be considered in developing green infrastructure plans. To achieve this, we employed a socioecological approach and a mix of methods including a literature review, a review of policy documents, semi-structured interviews with experts, geospatial data, and field observation. Ten main urban green infrastructures were identified in Canberra and associated green spaces and their ecosystem services were discussed. Finally, a framework was delineated to suggest recommendations for the identified urban green infrastructure types with the aim of improving the green infrastructure planning practice by enhancing, preserving, and reinforcing green spaces. The findings provide a foundation for coordinating green infrastructure decision making and suggest a framework for designing high-quality and multifunctional green spaces. The study concludes that further investigation is required to comprehend the diversity of urban green infrastructures and their ecosystem services, co-benefits, synergies, and trade-offs.
Canberra, a city known as a “garden city” that emerged in the early twentieth century, is developing at a speedy rate. The compact city vision for Canberra was announced in ACT Planning Strategy 2018 while the city encounters climate change impacts. Although urban compaction has its own benefits, it is considered a challenge for maintaining and developing the quality and quantity of urban green spaces. Canberra owns a unique urban design legacy and is known for its bush capital/garden city character, which has intertwined the social and ecological layers of the city. The concern around urban compaction and densification calls for holistic green infrastructure (GI) planning to balance the built and non-built infrastructure. To do so, it is necessary to understand the underlying social-cultural and ecological layers of Canberra’s green spaces and the Ecosystem Services (ESS) they offer. The application of multiple ESS in the current GI planning and governance practices is another issue that needs to be examined to inform future development. Thus, this qualitative research seeks to understand the ESS discourses in Canberra’s GI and the challenges in applying these ESS in planning and governance. We used a socio-ecological approach to design the research and understand the multidimensional values and benefits of Canberra’s green spaces. We adopted semi-structured interviews with twelve experts from relevant disciplines with specific knowledge of Canberra’s urban landscape and green spaces to find out the socio-ecological synopsis of Canberra’s GI and green spaces governance. We found that it is necessary to mainstream multiple ESS in Canberra’s GI to amplify the existing socio-ecological values. The abundance of green spaces in Canberra can be better used to make a multifunctional landscape that serves multiple ESS. However, we identified the maintenance and budget issues as the main challenges that can be addressed by improving community engagement. To design an effective GI network and mainstream ESS in green spaces, the planning and governance system should employ a transdisciplinary, multi-object and multi-scale approach and state-of-the-art technologies. Moreover, this research underlined the importance of a protocol and guidelines that monitor the landscape projects’ design and delivery correspondence to the high-level policies.
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