The rise of successful entrepreneurs in urban agriculture has attracted global interest. Here, we hypothesized that societal preferences and the acceptability of urban agriculture projects and products are ruling the success or failure of urban agriculture businesses. We surveyed 386 urban participants in Berlin, Germany, to identify general preferences for the productive use of urban space, the acceptance of different urban agriculture forms, and demands and expectations regarding urban agriculture products. The results show first that more than 80 % of the respondents preferred having accessible systems such as public green spaces, intercultural gardens, and rooftop gardens. Indeed, land uses that do not provide accessibility such as meadows, aquaponic farms, or intensive agricultural and horticultural landscapes showed lower acceptance, of less than 40 %. Second, 60 % of participants expressed acceptance of rooftop farming, agriculture in the urban fringe, or in inner-city brownfields, whereas 65 % rejected to have agriculture in multi-story buildings, agroparks, or aquaponic farms. Third, more than 50 % are willing to buy horticultural products, but they reject products from intensive production systems and animal-farming mechanisms, with more than 70 % rejection for animal products. Overall, this is the first study to investigate entrepreneurial urban agriculture possibilities from the perspective of potential consumers. The main insight is that the highest degree of acceptance is reached for multifunctional urban agriculture that combines commercial with ecological and social goals.As a consequence, projects that are purely production-driven or technologically intensive are more likely to be rejected.
Sustainable land use needs a manageable nexus of knowledge from planning practice, policy makers, the private economy, and civic society, as well as from scientific research. This is mutually dependent on the communicative and collaborative turn in spatial planning as well as by transdisciplinary research approaches. This paper offers an approach how to organise knowledge management and co-production of knowledge in the context of complex land use decisions. Therefore, a prototype of an internet-based knowledge platform is introduced based on a theoretical reflection of concepts for integrated information and knowledge management, as well as on practical experiences derived from a German case study. We conclude that sustainable land use requires Planning Support Systems (PSS) that combine transdisciplinary perspectives in order to co-produce robust knowledge. This also implies a transdisciplinary design of PSS. Challenges of implementation are discussed and further research is specified.
International sustainability objectives for land use, designated in the Sustainable Development Goals (SDGs) and Habitat III are formulated in general ways. The objectives need specification and regionalisation to raise impact. How far the general spirit of the objectives is reflected in regional and local practiceswill be discussed using the example of the annual scientific meeting of the German Academy of Spatial Research and Planning (ARL). This article shows that discussions about implementation comprise a richness of ideas in good practice and concepts for inner city development in some locations, whereas other disputes, for example, urban-rural interconnections, are missing.
Coastal areas are particularly sensitive because they are complex, and related land use conflicts are more intense than those in noncoastal areas. In addition to representing a unique encounter of natural and socioeconomic factors, coastal areas have become paradigms of progressive urbanisation and economic development. Our study of the infrastructural mega project of Patimban Seaport in Indonesia explores the factors driving land use changes and the subsequent land use conflicts emerging from large-scale land transformation in the course of seaport development and mega project governance. We utilised interviews and questionnaires to investigate institutional aspects and conflict drivers. Specifically, we retrace and investigate the mechanisms guiding how mega project governance, land use planning, and actual land use interact. Therefore, we observe and analyse where land use conflicts emerge and the roles that a lack of stakeholder interest involvement and tenure-responsive planning take in this process. Our findings reflect how mismanagement and inadequate planning processes lead to market failure, land abandonment and dereliction and how they overburden local communities with the costs of mega projects. Enforcing a stronger coherence between land use planning, participation and land tenure within the land governance process in coastal land use development at all levels and raising the capacity of stakeholders to interfere with governance and planning processes will reduce conflicts and lead to sustainable coastal development in Indonesia.
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