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- All Subjects: sustainability assessment
- Creators: Fernandes, Nagelle
- Creators: Webster, Douglas
Description
The sustainability impacts of the extension of the Mass Rapid Transit (MRT) system in suburban Beijing are explored. The research focuses on the neighborhood level, assessing sustainability impacts in terms of greenhouse gas emissions, air pollution, and energy consumption. By emphasizing suburban neighborhoods, the research targets the longest commuting trips, which have the most potential to generate significant sustainability benefits. The methodology triangulates analyses of urban and transportation plans, secondary data, time series spatial imagery, household surveys, and field observation. Three suburban neighborhoods were selected as case studies. Findings include the fact that MRT access stimulates residential development significantly, while having limited impact in terms of commercial or mixed-use (transit-oriented development) property development. While large-scale changes in land use and urban form attributable to MRT access are rare once an area is built up, adaptation occurs in the functions of buildings and areas near MRT stations, such as the emergence of first floor commercial uses in residential buildings. However, station precincts also attract street vendors, tricycles, illegal taxis and unregulated car parking, often impeding access and making immediate surroundings of MRT stations unattractive, perhaps accounting for the lack of significant accessibility premiums (identified by the researcher) near MRT stations in suburban Beijing. Household-based travel behavior surveys reveal that public transport, i.e., MRT and buses, accounts for over half of all commuting trips in the three case study suburban neighborhoods. Over 30% of the residents spend over an hour commuting to work, reflecting the prevalence of long-distance commutes, associated with a dearth of workplaces in suburban Beijing. Non-commuting trips surprisingly tell a different story, a large portion of the residents choose to drive because they are less restrained by travel time. The observed increase of the share of MRT trips to work generates significant benefits in terms of lowered energy consumption, reduced greenhouse gas and traditional air pollution emissions. But such savings could be easily offset if the share of driving trips increases with growing affluence, given the high emission intensities of cars. Bus use is found to be responsible for high local conventional air pollution, indicating that the current bus fleet in Beijing should be phased out and replaced by cleaner buses. Policy implications are put forward based on these findings. The Intellectual Merit of this study centers on increased understanding of the relationship between mass transit provision and sustainability outcomes in suburban metropolitan China. Despite its importance, little research of this genre has been undertaken in China. This study is unique because it focuses on the intermediate meso scale, where adaptation occurs more quickly and dramatically, and is easier to identify.
ContributorsXie, Liou (Author) / Webster, Douglas (Thesis advisor) / Cai, Jianming (Committee member) / Pijawka, David (Committee member) / Guhathakurta, Subhrajit (Committee member) / Arizona State University (Publisher)
Created2012
Description
Stern Produce has been a prominent agricultural produce distributor in Arizona since 1917, with three distribution locations in the state: Phoenix, Tucson and Flagstaff. The company is a wholesale supplier of produce, meat and dairy products. Stern Produce is seeking to create comprehensive sustainability metrics to develop sustainability baseline information on their operations. This project, in partnership with Stern Produce’s Sustainability Coordinator, provides a final report that describes the sustainability indicators and metrics, provides recommendations for future growth, and highlights immediate areas of impact using the Hart and Milstein’s Sustainable Value Framework (2003). Under the three tenets of people, earth and business, the sustainability areas to focus on for Stern Produce are: sustainable procurement (internal and external); fleet management; organizational continuity; sustainable communities; and, sustainable building operations. By formulating sustainable focus areas, Stern Produce is acknowledging the significance of integrating environmental consciousness with economic performance and social benefits. Based on the findings, the project will assist Stern Produce in identifying intervention points and find new ways to mitigate negative operational outputs. Moreover, the project will facilitate cross-department engagement and involvement, provide data for sustainability key performance indicators, and further social commitments to operating sustainably. Measuring and reporting operations also improve transparency within the company and with external partners. Furthermore, the assessment proposes sustainability initiatives to address staff and community wellbeing concerns. Thus, the project uses a triple-bottom line approach to assess Stern Produce and translate the sustainability indicators into value for the company.
ContributorsFernandes, Nagelle (Author) / Prosser, Paul (Contributor)
Created2017-04-28