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Developed Landscapes

Urban Growth of the Dallas-Fort Worth Metroplex, Texas, 1985-2015

DFW Urban Growth - 1985-2015
Urban Expansion of Dallas-Fort Worth Metroplex - 1985-2015

Among the most staggering changes for Texas in the past several decades has been the rapidly accelerating rate of urbanization – the U.S. Census Bureau reports that between 2010 and 2011, eight of the 15 fastest growing U.S. cities were in Texas (U.S. Census Bureau, 2012); a continuation of the rapid growth trend observed since 2000.  For this project, we are documenting and analyzing urban expansion in Texas cities over the past several decades to help understand how societal factors affect the land cover transitions and patterns of urban growth.

Full poster

Jennifer Jensen jjensen@txstate.edu

The influence of physiography on historical and future land development changes: A case study of central Arkansas (USA), 1857–2030

sleuth input and output layers
Central Arkansas input datatsets to SLEUTH-3r

The intricate interrelationships between environment and society result in unique landscapes, each with
its own development patterns and rates. While many studies have focused on how development impacts
the environment; this study quantifies the influence of the environment, relative to human historical
factors, on long-term (1857–2030) and large-scale (10,000 km2) development patterns in a region with
diverse physiography. A major component of this paper is the development of a Magnitude of Relative
Change (MRC) equation to empirically measure long-term development trends and rates at regional scale
in relation to multiple physiographic factors. We simulated past urban development trends and forecasted
future patterns for the central Arkansas (USA) region using a modified SLEUTH-3r urban growth model. In
doing this, we investigated the relationships and feedbacks between physiographic settings of the study
area and past and future development patterns. Another vital component of this research is the adoption
of an environmental historical approach to examine and evaluate development dynamics within and
among ecoregions. Our analytical approach emphasizes the potential of environmental forces to influence
land development transitions and at the same time appreciates the role of human advancements on
shaping those dynamics.

Jason Julian jason.julian@txstate.edu