Objectives To analyze the impacts of development on the terrestrial carbon dynamics of the 48 states. The impact will analyzed by comparing ecosystem model runs made using land cover data with and without the current level of development. Surfaces covered by constructed materials (roads, buildings, etc.) are withdrawn from photosynthesis and respiration. This loss is counterbalanced to some extent by managed vegetation (lawns, trees, etc.), which may be irrigated and fertilized. Unlike other types of disturbances, development typically does not have a recovery phase. Other disturbances such as deforestation have a demonstrable effect on terrestrial carbon dynamics. We will evaluate the impact development has on terrestrial carbon dynamics, and how this effect varies spatially. This information should be useful for improving our understanding, modeling and prediction of the global carbon cycle and the build up of carbon dioxide in the atmosphere.

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