Analysis of the impact of expressway construction on soil moisture in road areas

Abstract

To reveal the effect pattern of expressways on regional soil moisture, in this study, using trend analysis and buffer zone analysis methods, the data of VSWI (vegetation supply water index) in central Zhejiang Province from 2005 to 2016 were extracted from landsat7 satellite data using a single window algorithm, and spatial analysis was used to investigate the law of its differentiation. The results show that the multi-year average is 0.01879, between 0.01035–0.02774, showing a gentle decreasing trend, and there are obvious regional variations in space. We found that the impact of the new expressway and interchange on the VSWI in the buffer zone lasted for more than two years, and the VSWI increased in space farther away from the road, and this trend returned to normal at 8 km. Finally, the development patterns of the VSWI in the buffer zone of the newly established expressway and the interchange are approximately the same.

Influence of Expressway Construction Area Information on Drivers’ Route Choice Behaviours

“…With the increasing number of motor vehicles, more attention has been given to trafc congestion, air pollution, and trafc accidents [1]. A large number of quality improvement and reconstruction projects on existing expressways have sprung up to alleviate the trafc congestion caused by the large numbers of vehicles, and expressway reconstruction and expansion projects are gradually becoming essential in the feld of infrastructure construction [2]. Te proportion of reconstruction and expansion projects for existing expressway networks is increasing annually, especially in economically developed areas.…”