Continuous impervious surface dynamics mapping with Landsat time-series data

Authors: Chong Liu*, Jiangxi Normal University, Qi Zhang, Boston University
Topics: Land Use and Land Cover Change
Keywords: impervious surfaces, continuous, Landsat, Nanchang
Session Type: Paper
Day: 4/7/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Buchanan, Marriott, Mezzanine Level
Presentation File: No File Uploaded


Impervious surface expansion is one of the most important land cover changes that have far-reaching consequences on environmental change and human well-being. A critical issue in accurately monitoring impervious surface dynamic is the demand of high temporal frequency. We propose an efficient approach for continuously capturing impervious surface dynamics using time-series Landsat data. We apply and assess the proposed approach in Nanchang (China), which has been experiencing rapid impervious surface expansion during the past decade. According to the validation results, the overall classification accuracies in the start and the end years are reasonable, and the change detection analysis provides overall convincing performances in both spatial and temporal domains. Moreover, the resultant impervious surface extent maps exhibit comparable performances with five widely used products, including GLC30, FROM-GLC, GHS, CAS-NLCD and NUACI. The present approach offers a new possibility for tracking impervious surface change information with high frequency.

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