"Impervious surface" refers to a non-natural surface that prevents the infiltration of surface water, blocks evapotranspiration from the natural surface, and is dominated by man-made construction materials (e.g., concrete, asphalt, bricks, glass, etc.). The significance of impervious surface monitoring in portraying urban development can objectively reflect the process of urban expansion and land-use change, which is conducive to water resource management and natural disaster risk assessment. In addition, impervious surface monitoring is important for assessing urban blue-green space research and sustainable development, and can provide scientific basis and data support.

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