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Engineering    2018, Vol. 4 Issue (2) : 230 -234
Research |
A GIS-Based Evaluation of Environmental Sensitivity for an Urban Expressway in Shenzhen, China
Qian Li1,2,Fengqing Guo1,3,Yuntao Guan1,2()
1. State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China
2. Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
3. College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300384, China

Urban eco-environmental degradation is becoming inevitable due to the extensive urbanization, population growth, and socioeconomic development in China. One of the traffic arteries in Shenzhen is an urban expressway that is under construction and that runs across environmentally sensitive areas (ESAs). The environmental pollution from urban expressways is critical, due to the characteristics of expressways such as high runoff coefficients, considerable contaminant accumulation, and complex pollutant ingredients. ESAs are vulnerable to anthropogenic disturbances and hence should be given special attention. In order to evaluate the environmental sensitivity along this urban expressway and minimize the influences of the ongoing road construction and future operation on the surrounding ecosystem, the environmental sensitivity of the relevant area was evaluated based on the application of a geographic information system (GIS). A final ESA map was classified into four environmental sensitivity levels; this classification indicates that a large proportion of the expressway passes through areas of high sensitivity, representing 11.93 km or 52.3% of the total expressway, and more than 90% of the total expressway passes through ESAs. This study provides beneficial information for optimal layout schemes of initial rainfall runoff treatment facilities developed from low-impact development (LID) techniques in order to minimize the impact of polluted road runoff on the surrounding ecological environment.

Keywords Environmentally sensitive areas      Urban expressway      Geographic information system      Low-impact development     
Corresponding Authors: Yuntao Guan   
Just Accepted Date: 27 March 2018   Issue Date: 16 May 2018
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Cite this article:   
Qian Li,Fengqing Guo,Yuntao Guan. A GIS-Based Evaluation of Environmental Sensitivity for an Urban Expressway in Shenzhen, China[J]. Engineering, 2018, 4(2): 230 -234 .
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[1] Zackery B. Morris, Stephen M. Malone, Abigail R. Cohen, Marc J. Weissburg, Bert Bras. Impact of Low-Impact Development Technologies from an Ecological Perspective in Different Residential Zones of the City of Atlanta, Georgia[J]. Engineering, 2018, 4(2): 194 -199 .
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