Mapping spatial patterns of urban agriculture in Rome (Italy) using Google Earth and web-mapping services

Urban agriculture (UA) has been acknowledged for several positive effects such as access to fresh food, human activities moderation, agro-biodiversity and social and cultural relationships. In the city of Rome due to social and economic trends this kind of activity is spreading, but so far very few attempts have been addressed to inventorying the UA areas (e.g., community gardens, residential gardens, school gardens, illegal vegetable gardens, urban farms, etc.). Some mapping experiences have been carried out but all lack of a well-established methodology to be applied for a complete inventory. In this paper we propose a conceptual framework and methodology for mapping the UA in Rome through Earth Observation techniques by using the concepts of photointerpretation and the features of the most used web-mapping services. Google Earth has been used as a basic tool for visual interpretation and polygon digitalization, while other services have been used for the availability of additional features (e.g., the oblique view of Microsoft Bing Maps). The integration of the web-mapping services combined with ancillary data improved the UA site detection, allowing to define both the land use and the UA typologies. We argue that the integration of the web-mapping services for building urban agricultural land use datasets is cost-effective compared to processing commercial remote sensing images. The inventory can enable administrators to perform analysis about the interactions between agricultural activities and the urban environment, and to enact informed policies for green and vacant urban spaces management.     

Climate resilient urban development: Why responsible land governance is important

In less-developed countries, the major global pressures of rapid urbanization and climate change are resulting in increased vulnerability for urban dwellers. Much of the climate impact is concentrated in urban and coastal areas, as urban development spreads into areas that are hazard-prone. Often this development is dominated by poor quality homes in informal settlements or slums on informal or illegally occupied or subdivided land.Urban development needs to be more climate-resilient to meet the post millennium development goals (MDGs) agenda. One of the elements in achieving climate-resilient urban development is the degree to which climate change adaptation and risk management are mainstreamed into two major elements of land governance, viz. securing and safeguarding of land rights, and planning and control of land-use.This paper proposes ways in which the growth of human settlements can be better managed through responsible governance of land tenure rights, and effective land-use planning to reduce vulnerability, provide adequate access to safe land and shelter, and improve environmental sustainability.     

REDD+ and the agriculture frontier: Understanding colonists’ utilization of the land

Given the importance of the agricultural frontier as an engine of deforestation, this paper focuses on how colonists (from the Spanish word for “colonists” that is used to describe migrants to the agricultural frontier), who are important and largely overlooked stakeholders, perceive the new climate mitigation mechanism known as Reducing Emissions from Deforestation and forest Degradation in developing countries (REDD+). We aimed (1) to document colonists’ land use, perceptions, needs, and aspirations and (2) to understand if and how they could be taken into account under REDD+ policies. The study, including multiple data collection techniques (e.g., focus group, interviews, and participatory activities), was conducted in eastern Panama. Three areas that were adjacent to the Province of Darien border were chosen because of their similar forested landscapes and varying accessibility to a main road. Our results suggest that land use preferences, culture, forest scarcity and dependency, inequalities (e.g., land use, amount of forest, and land area), and lack of technical capacities are key elements to be considered when developing a REDD+ strategy with colonist communities. We propose that halting deforestation without both considering local communities’ perceptions and giving effective alternatives could seriously undermine livelihoods.     

Urban agriculture could provide 15% of food supply to Sydney,Australia, under expanded land use scenarios

Urban agriculture (UA) can be highly productive in terms of yield per unit area, however productivity is limited by available land and high input requirements. We determined how much of the food supply of Sydney, Australia, could be produced through UA by synthesising yield data from 13 UA gardens with information on labour and key material inputs and using spatial analyses to assess available land area. We modelled three scenarios with varying proportions of available land used for food production; 25 %, 50 % or 75 % of domestic yard space along with street verges and unused land (e.g. vacant lots). Around 15 % of Sydney’s total food supply, or its entire vegetable supply, could be produced through UA under the low range scenario, increasing to 34 % under the highest land use scenario. Under the low range scenario, all necessary irrigation water and organic soil amendments could be obtained from local waste streams, though these sources were insufficient to meet the needs of higher range scenarios. Available labour was a limiting factor in all scenarios, with the entire population being insufficient to meet labour needs required to maintain food production under efficiency and labour investment regimes typical of amateur urban gardeners. Establishing a professionalised UA workforce with greater labour efficiency would be required for managing the available land, however this scenario would likely require changes in public attitudes towards use of private land. These social issues, rather than physical limitations, may be the biggest factors preventing cities like Sydney from obtaining a non-trivial proportion of their food supply from UA.     

Risk, Wealth, and Sectoral Choice in Rural Credit Markets

We model the role of the informal credit sector in developing countries. The informational advantage of informal lenders is portrayed as the ability to monitor borrowers. Monitoring reduces the incentive problem and allows for contracts with lower collateral. This enables informal lenders to serve both individuals who cannot post the collateral required by the formal sector and those who are able but do not want to post collateral. The model is consistent with the conventional view of the informal sector as recipient of spillover demand from the formal sector. It also shows that the informal sector may provide partial insurance as the lower collateral requirement implies greater consumption smoothing for borrowers.     

Institutional factors affecting wild edible plant (WEP) harvest and consumption in semi-arid Kenya

Pervasive food insecurity and poverty in much of the world drives vulnerable populations to harvest natural resources as a means of generating income and meeting other household needs. Wild edible plants (WEPs) are a particularly common and effective coping strategy used to increase socio-ecological resilience in Sub-Saharan Africa where agricultural systems are often sensitive to environmental perturbations and instability. WEPs are collected across the landscape, from agricultural areas to government-managed hilltops with varying degrees of success and legality. This multiple case study research, conducted in Eastern Province, Kenya, investigates the formal forest regulations and land tenure rights, as well as local enforcement and understanding of those rules, in order to understand their impact on the ability of vulnerable populations to use WEPs as a coping strategy. The results suggest that widespread confusion, trust issues and a strong focus on the commercialization of wild foods are limiting the possible contribution of WEPs to food security and increased socio-ecological resilience. We identify a number of policy changes and extension programs that could better support local communities relying on WEPs for subsistence purposes to improve their adaptive capacity.     

Dealing with the bust in Vorkuta,Russia

This article traces the governance path affecting the boom-bust cycle in the Russian Arctic city of Vorkuta as a case study examining the role of institutional capacity and informality in mitigating the consequences of the cycle. The analysis examines the usefulness of various tools, including planning, policy, and informality. It also investigates the role of different actors, including the national and local components of the state and private corporations. The conclusion provides a typology of formal and informal land use tools. Soviet planners failed to foresee the bust and did not make provisions for it. Subsequently, the failure of national and local state policies to provide full solutions, combined with the absence of sufficient investment from private sector corporations, opened the door to a broad-ranging informality that encompasses policy-making, individual entrepreneurship, and associated conceptions of individual actions in society. The Soviet/Russian experience differs from that of other countries because in the last 100 years it has run the full gamut from a planned economy to unbridled capitalism. In cross-national comparison, it demonstrates the potential value of informal practices in situations where there is weak formal institutional capacity.     

硅谷制度对“世界水谷”建设的借鉴与启示

从正式制度、非正式制度以及实施机制三方面总结了硅谷的制度体系,得出对"世界水谷"建设的四点启示:注重高等院校的创新能力、重视竞争的市场机制、构建完善的资金保障体系与营造和谐的文化氛围。在硅谷制度体系对"世界水谷"建设启示的基础上,结合"世界水谷"的自身特点,提出从正式制度、非正式制度以及实施机制三方面构建"世界水谷"制度体系的设想。     

Fragmentation and Embeddedness: An Alternative Approach to the Analysis of Rural Financial Markets

Political economy approaches to analysing the efficiency of rural financial markets have focused on the role of power and social relations. Neo-classical institutional economics, on the other hand, has used information and transaction costs to explain performance. Recognizing the limitations of both approaches, this paper presents an alternative that focuses on the institutional form of financial intermediaries, that is, the governance structure of rules, monitoring and enforcement mechanisms that enable them to operate. This structure is supported by both formal and informal rules, norms and sanctions. As a result, the ways in which transaction costs are affected by governance structures can be identified and the embeddedness of financial intermediaries in social relations can be theorized. The application of this approach in Central Kenya demonstrates the insights that it offers into explaining borrower preferences in the financial market.     

Formal versus Informal System to Mitigate Non-point Source Pollution: An Experimental Investigation

Water pollution caused by aquaculture or agricultural activities negatively affects both the activity and downstream areas. A number of other upstream-downstream problems (e.g. water use, industrial/municipal water source pollution, salinity zoning problems) are examples of similar negative externalities. Non-point source pollution, which is either prohibitively costly or impossible to observe, is more feasible to identify, and hence mitigate at the aggregate level. We study experimentally the efficacy of two possible management systems: a centralised external, formal government-led monitoring and control system; a self-governing communication and informal system, both designed to manage shrimp farming, which generates a non-point source pollution with upstream-downstream externalities. Our results suggest that local communication and control outperforms the external monitoring and certification agency. These results, in conjunction with other relevant research, suggest that informal regulation and self-governance among shrimp farmers can be highly successful in tackling the pollution problem.     

Property rights and housing prices: An empirical study of small property rights housing in Shenzhen,China

Small Property Rights Housing (SPRH) is an important part of informal housing in China. SPRH is defined as housing developed with collective land ownership that is then sold to outside homebuyers such as non-indigenous villagers. This housing practice is legally forbidden and comes without formal titles. SPRH is popular in big Chinese cities where formal housing prices are constantly rising and increasingly unaffordable for many urban residents. However, research on SPRH is rare. Therefore, this study aims to investigate the effects (or the lack thereof) of de-jure property rights on housing prices by using the empirical case of Shenzhen where SPRH and FPRH estates constitute the main sources of urban housing for its residents. We collected both SPRH and formal Full Property Right Housing (FPRH) data in the Shenzhen housing market and adopted the Boundary Fixed Effect method and matching strategy to mitigate the bias caused by unobservable location and neighborhood factors. This empirical study shows that the lack of de-jure property rights has negative and significant effects on housing prices. The average housing price for SPRH apartments is, ceteris paribus, 52.82% lower than for formal FPRH apartments. Also, the premium of property rights varies across two administrative regions with different locations and economic environments, and the premium decreases as the age of the building increases.     

Agrarian class struggle and state formation in post‐colonial Pakistan, 1959–1974: Contingencies of Mazdoor Kisan Raj

State formation in post‐colonial societies is often explained with reference to the roles of elites. In Pakistan, landed elites continue to dominate the rural political economy through informal and formal institutions, but the history of its largest peasant movement shows how agrarian class struggle can change the institutional forms and functions of power. The Hashtnagar peasant movement achieved lasting de facto land and tenancy reforms in north‐western Pakistan in the 1970s through forcible land occupations that were regularized by state intervention. I argue that although divisions among elites were important, the state intervened in favour of peasants due to the rising organizational power of tenants and landless labourers under the centralized leadership of the radical Mazdoor Kisan Party. Agrarian class struggle weakened the informal power of landed elites and gave rise to institutions of peasant power. However, other fractions of the ruling class sought to undermine their landed opponents while co‐opting the militancy of the peasant movement by strengthening state institutions to intervene in favour of upwardly mobile tenants. The latter were separated from poorer peasants and the landless, thus demobilizing the movement.     

Territorialising REDD+: Conflicts over market-based forest conservation in Lindi,Tanzania

In this paper we use the lens of political ecology to shed light on the causes and effects of pro-poor REDD+ induced land use conflicts. We build our study on recent theoretical work on territorialisation in nature conservation to analyse the conflicts and outcomes of the TFCG/Mjumita REDD+ project in Lindi, Tanzania. Drawing on qualitative fieldwork in two case study villages we argue that conservation organisations increasingly make use of participatory tools, FPIC procedures and good governance principles to include local populations in the creation of what we call market-based conservation territories (MBCT). In contrast to project developer’s claims of win–win benefits, we highlight the mixed outcomes of MBCTs and argue that their performance-driven nature and reliance on formal governance arrangements lead to the enclosure of common forests. This inevitably causes conflicts between and within villages over the meaning, ownership and access to forest resources, especially given the importance of customary relations in tropical rural contexts. We argue that despite the extensive community engagement strategy and genuine pro-poor approach of the REDD+ project, project proponents were unable to prevent land use conflicts and risks of economic and physical displacement. The specific social, economic and political conditions shaped the implementation of the project which led to negative consequences to some stakeholders despite genuinely noble intentions. Therefore, we argue that in order to achieve more positive results when creating MBCT, project developers must better acknowledge the inherent trade-offs of markets in conservation and take the limitations and realities of local governance context better into account. We suggest a more explicit assessment of social and environmental justice in the project and more context-specific efforts to prevent social harm from conservation. Theoretically, our study contributes to a better understanding of territorialisation processes under the current trend of market-based conservation.     

Contract Enforcement, Social Efficiency, and Distribution: Some Experimental Evidence

We use economic experiments to investigate how different contract enforcement regimes affect efficiency and the distribution of surplus in a vertically coordinated market with buyer concentration. We find that if a third party (e.g., government) perfectly enforces contracts, social efficiency is enhanced. We also find that when third-party enforcement is imperfect, social efficiency will not necessarily decrease because trading partners find ways to self enforce contracts. However, opportunistic behavior by some traders leaves some sellers (growers) with ex post profits below reservation levels. Finally, partial or one-sided third-party enforcement causes significant efficiency losses by constraining subjects' ability to use informal enforcement instruments.     

Adoption of volunteered geographic information into the formal land administration system in Kenya

Individualization of tenure through title registration programmes introduced in many African countries after independence with the promise of security of tenure and increased agricultural productivity has, instead, had the opposite effect. Informal land arrangements continue to emerge as a result of the slow pace of land adjudication (formalization) and updating of land information systems. The trend towards computerization of land information systems has only put focus on already existing formal land tenure arrangements, leaving out the informal social tenure arrangements. As a result, there are now many efforts worldwide motivated by the introduction of the Social Tenure Domain Model (STDM), and freely-available and easy-to-use technology tools to identify, document and map land in support of informal land administration arrangements. Actions are made towards the use of community-generated information to support land administration. Using theories from the interplay between formal and informal institutions, this paper discusses the potential outcomes in adopting Volunteered Geographic Information (VGI) in land administration in Kenya. Two case studies are presented that demonstrate the complementary-accommodating, versus the substitutive-competing approaches. These are then compared with the formal land adjudication process in Kenya. It is established that because of the direct involvement of the national mapping agency in land adjudication where VGI is utilized, the outcome is a case of formal adoption of VGI, while in the other case, where there is little or no involvement by the national mapping agency, the outcome is more of competition and substitution. The latter is an example in which the VGI is used just like any other information to inform policy making, rather than taking it as the authoritative source. We argue that since informality is – and will always be – part and parcel of land administration in many African countries as a result of ingrained social relations and power structures, adopting crowdsourced land information into existing formal land administration systems should consider the particular land administration process, satisfying innate demands and requirements, thus re-engineered to accommodate VGI.     

Formal and informal contract farming in Mozambique: Socially embedded relations of agricultural intensification

This paper explores the role of contract farming arrangements in agricultural intensification in sub-Saharan Africa, combining secondary literature and original case material from Mozambique. The paper extends the scope of “contract farming” beyond the formal contracts between large companies and small-scale producers to include less formal credit agreements between farmers and traders. It argues that such informal contract arrangements are evidence of farmers' agency in “real markets.” In the studied cases, farmers use contract farming opportunities to intensify agricultural production by investing in irrigation and inputs. While informal contracts typically concern locally consumed crops, thus with more possibilities for side selling than formal contracts for export crops with company-controlled markets, informal contract compliance reflects closely knit social ties between the contracting parties. In both formal and informal contracts, purchasers tend to seek out producers who are already irrigating, thus obtaining gains from farmers' earlier investments. This also implies contract farming as a mechanism for accelerating social differentiation arising from unequal access to irrigation. The paper argues that the significance of informal contracts in the studied cases raises the possibility that informal contract farming by local traders plays a more important role in agrarian transformation in Africa than formal contract farming by large companies.     

Perceptions of impacts,public participation,and learning in the planning,assessment and mitigation of two hydroelectric projects in Uttarakhand,India

The hydropower potential of the state of Uttarakhand, in the Indian Himalaya, is an estimated 20,000 MW, of which approximately 3200 MW have been developed. In conjunction with the central government, Uttarakhand is pursuing a policy of rapidly developing its remaining potential. The necessity for careful planning, assessment and mitigation of this development is paramount, requiring meaningful and effective public participation. This study examined two hydropower projects in Chamoli District. Our purpose was to investigate how stakeholders viewed the projects’ impacts, how local residents were involved in planning, assessment and mitigation, and what the residents learned from their involvement. We used a qualitative methodology involving a document review, participant observation, and semi-directed interviews. Local residents and nongovernmental organizations emphasized adverse social and environmental impacts. They thought the way of life and social fabric of affected villages were significantly altered and future sustainability was uncertain. Industry respondents emphasized the economic benefits. Government officials were relatively balanced in their perceptions. In one project, the only formal participation opportunity occurred during mitigation: development of the catchment area treatment plan. In the other, opportunities were available during assessment (e.g., hearings) and mitigation (e.g., advisory committees). Both projects involved multiple informal efforts at participation (e.g., legal petitions and public protests). Among local residents, there were notable instances of sustainability-oriented learning. The development of hydropower projects in Uttarakhand can become more participative, to improve decision making, promote equity, and create opportunities for sustainability learning.     

Mapping Brisbane’s Casual Creative Corridor: Land use and policy implications of a new genre in urban creative ecosystems

Creative hotspots have become a key driver for urban policies to stimulate social, cultural, environmental and organisational growth of creative and knowledge-based clusters, districts and hubs. However, their functional and spatial characteristics vary due to their different evolving structure as new spaces of economic activity in different contexts. This article points to a consideration of new foci for both land use and urban economic policy through a mapping of formal and informal creative hotspots in Brisbane, Australia. The study found two distinctive development patterns: (a) earlier top-down approaches as instigated by national and international innovation policies, and; (b) recently emerging bottom-up spaces for creativity, knowledge and innovation practices. This study examines how formal creative strategies and emerging informal creative spaces shape cities and urban policies. The methodology comprises online data collection and a review of creative and knowledge strategies and implementation policies. Data was then analysed via multiple mapping techniques illustrating the spatial distribution of creative hotspots, formal and informal formations, scale and land use characteristics. The research findings consolidate our understanding of Brisbane’s creative ecosystem and suggest new urban policy mechanisms to better foster the interrelationship between top-down and bottom-up approaches in cities, that is, between formally planned and large-scale interventions and small-scale organic and informal creative activities.