Spanish Abstract: El articulo desarrolla la hipotesis de inercia de la estructura agraria, indagando en los determinantes socioeconomicos y espaciales de la concentracion de la propiedad de la tierra en Colombia a nivel departamental durante el periodo 2000-2010. Para el efecto, se fundamenta en conceptos del estructuralismo agrario, adaptandolos a herramientas metodologicas propias de la econometria espacial.La estimacion del panel espacial permite concluir que son los motivos especulacion y dominacion los que explican la dinamica reciente de mayor concentracion del uso y propiedad de la tierra. Asi mismo, permite concluir la existencia de dependencia espacial departamental.English Abstract: The article develops the hypothesis of inertia, applying it to agrarian structures and investigating socio-economic and spatial determinants of land tenure in Colombia at the departmental (regional administration) level for the period 2000-2010. The work is based on concepts of agrarian structuralism, adapting them to methodological tools of spatial econometrics.The estimation of spatial panels permits us to draw the conclusion that speculation and domination motives explain the recent dynamics leading to increased land tenure and intensity in its use. It also confirms the existence of spatial dependence between units at the departmental level.