Agriculture and the city: A method for sustainable planning of new forms of agriculture in urban contexts

Contemporary cities are threatened by urban development decreasing the overall environmental quality and fragmenting natural and agricultural landscapes. As a result of this fragmentation the number of Non Urbanized Areas (NUAs) present in urban contexts is dramatically decreasing. These areas include cultivated land, Abandoned Farmlands, Grassland, Woods and Shrubs that are often located at the peri-urban cities’ fringes. Among NUAs, farmlands and other forms of urban and peri-urban agriculture provide all three major categories of ecosystem services, provisioning, regulating and cultural services. Recently, New Forms of Urban Agriculture (NFUA) have gained increasing attention from researchers for their promising multifunctionality. Incorporating NFUA into the urban environment will thus improve the sustainability of cities, taking advantage of the multiple benefits and services they can provide.This paper presents a method for the characterisation of NUAs in terms of their physical, ecological and social features. These areas are analysed with different criteria and related indicators structured according to a GIS-based Multi Criteria Suitability Model. The proposed model checks the suitability of transformation of the NUAs toward NFUA, thereby enhancing their ecological and social function as well as accessibility and overall connectivity. Different scenarios of spatial configurations for NFUA have been explored with a sensitivity analysis on the values of used indicators. The method was tested for the municipality of Catania, south Italy, an urban context characterised by a relevant shortage of public green spaces and services.     

Differentiating peri-urban areas: A transdisciplinary approach towards a typology

Peri-urban areas have no clear boundaries, both in geographic and conceptual terms. This paper presents a transdisciplinary approach for the identification of typologies of peri-urban areas and applies it to the Lisbon Metropolitan Area (LMA), Portugal. It is based on the assumptions that more than one type of peri-urban region around an urban core can exist, and that a transdisciplinary approach, linking the physical, economic, social and personal aspects, is needed to capture the intrinsic variability and the complexity of the peri-urban character. The approach is based on four sequential steps: (i) identifying the important peri-urban dimensions to be considered, based on expert-knowledge and stakeholder perspectives; (ii) defining a set of indicators for each dimension; (iii) summarizing redundant information for each dimension; and (iv) applying cluster analysis to identify typologies of peri-urban. This approach was applied to the 211 parishes comprised in the LMA. Seven types of parishes were identified, of which two can be considered urban and five peri-urban, although with quite distinct features. This approach has the potential to be applied to other metropolitan regions, and the resulting peri-urban (and urban) typologies can contribute to a better understanding of the peri-urban character, and to a more targeted implementation of planning and management strategies taking into consideration the diversity and specificities of each peri-urban type.     

Coastal areas and climate change: A decision support tool for implementing adaptation measures

Climate change will be one of the main global challenges in the future. In this context cities play a key role. If, on the one hand, cities cause climate change, on the other hand, they are the places where climate change impacts are most evident, as it deeply affects the quality of life of its inhabitants. Climate change impacts are particularly relevant for coastal areas. These are characterized by a higher concentration of buildings and people in comparison to inland areas. In particular, one of the forecasted effects of climate change in these areas is the increase in coastal flooding due to rising sea levels and storm surges. The implementation of strategies and actions for the adaptation of urban areas to the impacts of coastal flooding is essential to ensure the liveability of coastal communities. Urban planning plays a key role in cities’ adaptation. However, even though the interest in this topic has been increasing, operative support and tools for planning urban adaptation in cities are in short supply, especially in coastal cities. In light of this, it has become necessary to focus on the definition of new tools responding to the needs of urban planning.Based on these observations, this paper, starting from the existing literature on coastal vulnerability indices, has developed a new index: the Coastal Resilience Index (CoRI). Thanks to the CoRI and to the use of technological innovations applied to urban planning (in particular, Geographic Information Systems), a decision support tool has been developed to identify adaptation measures aiming to reduce the impacts of coastal flooding, caused by rising sea levels and storm surges.     

Public preferences for landscape features: The case of agricultural landscape in mountainous Mediterranean areas

Provision of landscape amenities produced by farmers, in addition to their economic function of producing food and fibre, has contributed to a reassessment of the role of agriculture in society. In this paper, we examine whether agricultural landscape provision really responds to a social demand as is argued by those in favour of multifunctionality. Thus, the aim of the present work is two-fold. First, we evaluate rural landscape preferences of citizens from a range of choices in the mountain area of the Alpujarras (south-eastern Spain), and second, we estimate their willingness to pay (WTP) to enjoy each of the landscape characteristics existing in the area. For the empirical analysis, based on a survey of public preferences due to the good public characteristics of landscape amenities, we applied two stated preference methods: Conjoint Analysis (CA) and Contingent Valuation (CV). Three landscape attributes were considered for this analysis: type of vegetation layer, density of rural buildings, and level of slope. Several levels were also considered for each attribute: abandoned fields, dryland farming, irrigated farming, and natural lands were included for the vegetation layer; three levels (low, intermediate and intense) were considered for the level of slope and three levels (none, little and intense) for rural buildings.     

Reshaping the global agricultural landscape: perspectives from Brazil

This article highlights the main changes observed in Brazilian agriculture and analyzes the connections of the observed changes in global agriculture. My approach to the analysis focuses the main drivers of changes, where institutions play a central role. Three driving forces are are considered: first, the effects of global demand for food, fiber, and energy; second, the sustainability debate; and third, the bio‐energy paradigm. Each driver presents both local as well as global effects. The article does not emphasize the impact changes in Brazil had on the global agricultural landscape but argues that the impacts run from local and global changes, which cannot be discussed separately.     

Quantifying spatial supply-demand mismatches in ecosystem services provides insights for land-use planning

Global trends in land-use changes, including urbanization and abandonment of rural areas, have important repercussions for the supply and demand of ecosystem services (ES). In this study, we assessed and mapped the supply and demand of three ES (water provision, climate regulation, and outdoor recreation) along an urban-rural gradient in the Madrid region (Spain) from 1990 to 2012. We mapped ES supply, based on land use/land cover (LULC) data, using InVEST models and complementary methods, and ES demand, using population density and demand indicators. Then, we explored spatial supply-demand mismatches at a municipality spatial scale. Despite an increase in ES supply in some areas, a general increase in ES demand led to increasing dependence by the Madrid metropolitan area on outlying areas. We found that the number of municipalities that exhibited mismatches between the supply and demand in ES increased throughout the study period, due mainly to urban sprawl. Our results suggest the need for comprehensive land-use planning at the regional scale, taking into account that many ES flows reach beyond municipality boundaries. Finally, we discuss the utility of analyzing spatial mismatches in the supply and demand of ES for land-use planning and decision-making.     

Urban development versus wetland loss in a coastal Latin American city: Lessons for sustainable land use planning

Urbanization is a primary cause of wetland loss in coastal metropolitan regions. Therefore, it challenges the preservation of biodiversity and the provision of key ecosystem services for urban settlements. These services include leisure and recreation, climate and water regulation, water purification, and especially alleviation of natural hazards. Tsunami flood mitigation is a particularly valuable regulating service provided by these wetlands, as recently evidenced during the 2010 tsunami that hit the central coast of Chile.The Concepción Metropolitan Area (CMA), located on the central coast of Chile, has experienced noticeable wetland loss in recent decades. Our study focused on the Rocuant-Andalién wetland, which has been particularly affected by urbanization. This wetland strongly contributes to flood control, and has provided effective protection against the CMA’s latest tsunamis (1835 and 2010). Based on Strategic Environmental Assessment (SEA), we have quantified urban growth over the wetland, both executed and projected under the Metropolitan Urban Plan of Concepción (MUPC). Recent loss in wetland area by urban growth has been quantified using land use and cover change (LUCC) maps from 2004 to 2014, obtained from the classification of Landsat images. Prospective changes (considering the complete MUPC deployment) have been inferred by combining the MUPC with the 2014 land cover map. In addition, we quantified the observed effect and planned urban growth on the wetland protected area, geoforms and potential flooding based on the area affected by the last Tsunami. Results show that urban areas have increased by 28% between 2004 and 2014, while future increase is expected to reach 238%. In contrast, wetland area has decreased by 10% from 2004 to 2014 and is expected to decrease by up to 32 %. Thus, the MUPC is not contributing to the mitigation of wetland loss nor the preservation of its biodiversity and ecosystem services. Implications for coastal planning are discussed.     

Urban crops and livestock: The experiences,challenges, and opportunities of planning for urban agriculture in two Canadian provinces

While many municipalities globally are currently undertaking initiatives to support urban agriculture, policies and zoning regulations can act as barriers, with the former usually not integrated with planning. Extensive research has been conducted on urban agriculture policies in the global South, but much less is known about associated practices and policies in the global North. This is especially true for the Canadian context and therefore the present study aims at improving our overall understanding of the urban agriculture situation in two Canadian provinces. Relevant policies, such as official plans or official community plans, alternate policy documents and guidelines, zoning by-laws, and animal-related by-laws were reviewed for 10 municipalities in Ontario and in British Columbia, all varying in socio-economic and climatological characteristics. Additional key informant interviews were conducted with municipal planners, community garden coordinators, and other municipal staff familiar with urban agriculture policies from six of the selected municipalities.In line with global trends, our results suggest that urban agriculture is becoming more widespread in the two provinces. However, even though all studied municipalities consistently support urban agriculture, they vary significantly in their approach, with some municipalities focusing much more narrowly on certain types of activities than others. Overall, community advocacy and municipal council support are the most important drivers in the policy process. Key informants expressed a need to bridge existing gaps between policy adoption and implementation of tools, emphasize public education and public awareness, create inventories of land available for urban agriculture, incorporate urban agriculture in the development review process, and focus on the commercial potential of the practice. Encouragingly, despite the many challenges that need to be addressed, we found that many opportunities exist that municipalities could consider when creating improved local urban agriculture policies and tools to enhance the urban food system.     

Sustainable valuation of land for development. Adding value with urban planning progress. A Spanish case study

This article presents a valuation model of land for development in a sustainable way, based on the design and execution of urban planning. Using this method, one can obtain, at any given point in time, the added value progress of the urbanization process. For each year during the plan’s execution, the value of land has been estimated. The free cash-flow method was applied in order to estimate the land valuation of any given year. From the estimate for each of those years, and using regression analysis, the most suited value added function was obtained, for the increase of value across time up to the point of finalized, fully urbanized land. The results show that this is an exponential growth function, such that during the initial years the progress of valuation is slow, but it accentuates during final years of execution as the land becomes urbanized, at which point the land achieves maximum value.     

Measuring urban sprawl and exploring the role planning plays: A shanghai case study

Measuring the degree of urban sprawl largely depends on the local context and available data. This research establishes a multidimensional index which combines city expansion, urban compactness and urban form to measure sprawl. Urban planning, as part of the state-led growth approach, has exerted dramatic impact on city growth in China. Recent studies have discussed the role of planning in city growth. However, measuring the impact of planning on sprawl, has not been conducted. Taking Shanghai as a case study, this paper builds a multidimensional index to measure the spatio-temporal characteristics of urban sprawl in Shanghai from 1990 to 2010. It finds that urban sprawl was more serious in 2000s than in the 1990s, and the sprawl also presents spatial heterogeneity within different areas of the city. While quantifying the role of planning in urban sprawl, this study adopts the Geo-Detector based on spatial variation analysis of the geographical strata in order to assess the impact of planning on urban sprawl. It finds that planning is strongly correlated with urban sprawl, in other words, urban sprawl is kind of a "planned sprawl" in Shanghai. The research concludes with future planning policies necessary for a more sustainable and compact development pattern.     

Community-based rural residential land consolidation and allocation can help to revitalize hollowed villages in traditional agricultural areas of China: Evidence from Dancheng County,Henan Province

The accelerated rural hollowing driven by vast and increasing out-migration of rural labors under urban–rural dual-track system has imposed huge obstacles on improving land use efficiency and coordinating urban–rural development in China. Taking Dancheng County in Henan Province as an example, this paper analyzes the status quo of rural hollowing and discusses two typical rural residential land consolidation and allocation (RRLCA) practices in traditional agricultural areas (TAAs) of China. The results show that, Dancheng experienced rapid rural hollowing characterized as the hollowing of rural industries, infrastructure, and residential population and settlements. However, Dancheng has considerable potential and the necessity of RRLCA, for the model-based estimation shows that the potential of increasing farmland by carrying out RRLCA was about 5649 ha. The two community-based RRLCA practices show positive effects on the improvement of local living conditions, increment of farmland area and development of rural industries. Their experiences, including self-organized rural planning, democratic decision-making, and endogenous institutional innovation may benefit future RRLCA. Overall, it indicates that promoting community-based RRLCA scientifically according to local conditions could provide an integrated platform for increasing farmland area, developing modern agriculture, promoting new countryside construction, and thus revitalize hollowed villages. On considering the limitations and obstacles of current initiatives, suggestions for future RRLCA in rural China have been put forward.     

Principles for integrated environmental management of military training areas

Military Training Areas (MTAs) cover an estimated 200–250 million hectares globally, occur in all major ecosystems, and are potentially significant conservation assets. In some jurisdictions, MTAs may be the largest terrestrial land use category that is owned and operated by a sovereign government. Despite this, MTAs are not recognised as either a conservation or environment protection resource. Further, no MTAs are managed for their environmental values, defined as aspects of the environment that are valued by society, nor is there any specific MTA management guidance that details how both the military training and environmental values of a MTA can be maintained.We conducted a desktop review of Australian and German MTA management documentation to determine whether they contained management principles that recognised both military training and environmental values. Management documentation from these two countries was chosen as they are considered to be among countries at the forefront of MTA management globally. Our review determined that both the Australian and German management regimes do not have specific management principles for these values. This is likely to be the case for the majority of MTAs globally.For the first time, we develop MTA management principles that integrate the management of both military training objectives and environmental values. Key to achieving this integration is an understanding of the intersection of the impacts of military training on the environment, and the known, or potential, environmental values of a particular training area.To assist with the implementation of the management principles, we developed a new conceptual framework for the management of MTAs. The framework contains two adaptive management loops. The first focuses on the management of environmental values of MTAs, the second targets the military training values of MTAs. These two management loops facilitate for the development of management practices that optimise MTA management for both military training and biodiversity conservation.     

The role of land planning policies in supporting housing affordability: The case of the Gaza Strip

The Gaza Strip suffers from a limited amount of land compared to the population growth rate. This imposes several challenges on urban planners in managing housing land in a way that protects housing affordability, especially for the low-income category. In general, housing in the Gaza Strip is unaffordable, for several reasons, including a recent abnormal rise in urban land prices. The study investigated this issue based on a survey of local housing specialists in addition to residents. The study found that to support housing affordability in Gaza, planning solutions that ensure efficient use of urban land in the first place need to be implemented. Furthermore, two parallel actions are required: (i) to implement measures that increase housing land supply and improve security of land tenure; and (ii) to establish a robust and effective housing finance system that fits the socio-economic situation in the Gaza Strip.     

Farmer-specific relationships between land use change and landscape factors: Introducing agents in empirical land use modelling

Traditional empirical land use change models generally assume one average land use decision-maker. Multi-Agent System (MAS) models, on the other hand, acknowledge existence of different types of agents, but their poor empirical embedding remains a serious handicap. This paper demonstrates how agent information can also be incorporated into empirical, biophysical land use models.     

Changing rural landscapes: A need for planning and management

This article explains how recreational subdivisions convert large tracts of rural land in the USA into ‘potential vacation homesites’. Much subdivision has occurred in areas where land use regulations are weak or non-existent. All too often developers have implemented an operational framework without a master plan, have not adhered to local environmental constraints, and failed to provide the most basic services needed for human habitation. Many of these so-called ‘planned new communities’ qualify as neither communities nor planned and end up as ghost subdivisions with vast acreages of unused, vacant land marked by an elaborate network of bladed roads. Specific developmental guidelines are suggested to assist governmental officials in reducing the negative impact associated with the premature subdivision of land years prior to its expected use.     

Land use changes in protected areas and their future: The legal effectiveness of landscape protection

It is expected that the application of a restrictive legal instrument would be an important barrier to human pressures on protected areas in Brazil. One aspect that remains to be determined is whether the applied restrictions will be related to the quality of scenarios at the borders of protected areas. The objective of this work was to analyze the capacity for minimizing the impacts on two protected areas and to identify the effective function of the barrier imposed by an environmental legal border. The borders of two protected areas, the Despraiado Sustainable Development Reserve and the Jureia-Itatins State Ecological Station, as well as the corresponding buffer zone were studied. The historical evolution of the land cover/land use of these regions was analyzed by dividing the regions into 900 m² hexagonal units. The scenarios for the years 1962, 1980 and 2007 were overlaid for each hexagon. The hexagons were classified according to the possible effects of conservation, and the results were quantified in terms of the frequency of land use and ecological flows. A simulation of future land use in 2028 was performed using the Kappa index, Markov chain modeling, multi-criteria analysis and cellular automata modeling. Based on the trend for the last 45 years, a very dynamic interaction at the legal boundaries was identified; in certain cases, either conservation or degradation were stimulated, and the intended objectives of legal environmental measures were never fulfilled. The simulation showed that by 2028, the frontiers of these protected areas will retain less than 10% of the natural vegetation cover, and 43% of this area will be covered with banana plantations.     

Delineating boundaries of social-ecological systems for landscape planning: A comprehensive spatial approach

An increasing number of studies demonstrate the need of applying a social-ecological system approach for landscape planning. However, there is a lack of empirical research that operationalizes the concept of social-ecological system for landscape planning through the characterization of social-ecological interactions. In this study, we develop a methodological framework to delineate the boundaries of social-ecological systems and to characterize their main social-ecological units in a spatially explicit way. Social-ecological units represent the interactions between the biophysical and socio-economic sub-systems at local scale. The methodology is structured in four phases: (1) ecological regionalization, i.e. identification and mapping of consistent ecological units based on biophysical variables; (2) socio-economic regionalization, i.e. identification and mapping of homogeneous groups of municipalities based on socio-economic variables; (3) identification of social-ecological systems boundaries and characterization of social-ecological units; and (4) validation of the social-ecological systems boundaries with key informants through participatory mapping. By applying the proposed methodological framework to three different Mediterranean cultural landscapes, we define the boundaries of social-ecological systems and illustrate how social and ecological sub-systems interact at local scale. We conclude that the proposed methodological framework is useful to operationalize the concept of social-ecological systems in landscape planning.     

Integrating farmland in urban green infrastructure planning. An evidence synthesis for informed policymaking

The Green Infrastructure (GI) Strategy was adopted by the European Commission in 2013, to promote the deployment of GI by integrating it into main policy areas. Despite a high level of awareness for a policy integration across sectors at the EU level, urban and peri-urban farmland (UPUF) is up to now barely considered. A systematic evidence base addressing the contributions of UPUF can support a more informed policymaking. To address this, our paper developed a first evidence synthesis, to evaluate potential of UPUF contributing to policy objectives, thereby tackling major urban challenges. Furthermore an analysis of policy documents revealed gaps on the current state of policymaking and potentials for the integration in future policies. Due to a reciprocal consideration between EU level policies and scientific knowledge this work provides information that help to further construct scientific evidence to address policy concerns while taking into account multiple perspectives. Furthermore, we discussed the implications of our findings for further UGI research and policymaking and thus hope to extend the current political debate across policy sectors.