Economía institucional de la intervención urbanística estatal

La intervención urbanística del Estado es insustituible. En primer lugar porque el capital privado no está dispuesto a asumir el riesgo de depreciación virtual inherente a la provisión de bienes públicos. Tampoco ha alcanzado los  niveles de acumulación previa que de manera individual estén en capacidad de reemplazar los esfuerzos colectivos que se deben movilizar para tal efecto. Es por ello que estratégicamente el capital privado ha seducido al público con la idea de la eficiencia de las alianzas público-privadas y la gobernanza. En segundo lugar porque el mercado inmobiliario residencial formal es un mercado segmentado e imperfecto en el que el poder de mercado de los estructuradores urbanos y metropolitanos alcanza niveles cuasi-monopólicos. Por tanto, y siguiendo a Commons, la regulación y el control de la oferta inmobiliaria residencial incide positivamente en la ampliación de la libertad en la producción y en la elección de localización de las familias que habitan en las metrópolis. Un orden menos segregado que el perseverante se torna posible. Este trabajo se ocupa de analizar, desde una perspectiva teórica pluridisciplinar como la economía institucional urbana, las posibilidades e instrumentos con que se cuenta para alcanzar tal orden.

Residential Mobility: a Sociological Concern

The aim of this paper is to present a theoretical-conceptual approach to residential mobility, in general, and residential trajectories, in particular. It seeks to understand how from the unequal distribution and appropriation of social resources —both material and symbolic— different trajectories are developed and how socio-territorial structures constrain, shape and enable interactions between families, their members and the various contexts of action towards meeting their housing needs. From sociological contributions of different traditions, we present a scheme that pays attention to articulating the relationship between structural factors, position in social structure and decisions elating to changes of residence. We conclude that mobility patterns are relational patterns that are defined in dialogue with the opportunities and limitations that are set up around the housing stock and new or vacant land, the land market dynamics and housing, the labor market, the provision of nfrastructure services and social facilities, etc.

Social housing and land use planning in Medellin during the period 2006-2011. Steps towards socio economic and residential segregation

This paper presents an approach to the relationship between land use planning and socioeconomic residential segregation, from the location of social housing in Medellin, Colombia, during the period 2006-2011. The first part introduces the land use regulations regarding the location of social housing, identifying ambiguities in the current spatial plan. Next, we present the intersection of  regulatory information and the location of the projects that were under construction during the  study period, highlighting the need to consider the location as an important characteristic of social housing and residential segregation as a phenomenon that must be recognized and worked on land  use planning in our cities.

The environmental impact of civil conflict : the deforestation effect of paramilitary expansion in Colombia

Despite a growing body of literature on how environmental degradation can fuel civil war, the reverse effect, namely that of conflict on environmental outcomes, is relatively understudied. From a theoretical point of view this effect is ambiguous, with some forces pointing to pressures for environmental degradation and some pointing in the opposite direction. Hence, the overall effect of conflict on the environment is an empirical question. We study this relationship in the case of Colombia. We combine a detailed satellite-based longitudinal dataset on forest cover across municipalities over the period 1990-2010 with a comprehensive panel of conflict-related violent actions by paramilitary militias. We first provide evidence that paramilitary activity significantly reduces the share of forest cover in a panel specification that includes municipal and time fixed effects. Then we confirm these findings by taking advantage of a quasi-experiment that provides us with an exogenous source of variation for the expansion of the paramilitary. Using the distance to the region of Urab´a, the epicenter of such expansion, we instrument paramilitary activity in each cross-section for which data on forest cover is available. As a falsification exercise, we show that the instrument ceases to be relevant after the paramilitaries largely demobilized following peace negotiations with the government. Further, after the demobilization the deforestation effect of the paramilitaries disappears. We explore a number of potential mechanisms that may explain the conflict-driven deforestation, and show evidence suggesting that paramilitary violence generates large outflows of people in order to secure areas for growing illegal crops, exploit mineral resources, and engage in extensive agriculture. In turn, these activities are associated with deforestation.