Contribution Degree of Different Surface Factors in Urban Interior to Urban Thermal Environment

Table 3

Basic information of the feature categories.

Feature category	Delegates	Explanation	Slice images
Water		A body of water within built-up area, such as a river, lake, or pond.
Vegetation		Vegetation within built-up areas, such as forests, grasslands, and greenbelts.
Bright building		Buildings with high reflectivity in the area, such as concrete roofs and cement floors.
Dark building		The buildings with low reflectivity in the area, such as asphalt roof, cement pavement, and red brick tile house.
Bright soil		Bare land with high reflectivity in the built-up area, such as bare soil with high sediment content, hard soil pavement with shallow water content, and bare area waiting for construction after demolition.
Dark soil		Bare land with low reflectivity in the built-up area, such as bare soil with high water content, land with sparse shrub growth in grassland, and water edge area.
Alloy building		The alloy buildings with very high reflectivity are constructed in the area, such as colored steel roof, glass roof, and alloy roof, such as the outer building materials of Beijing Grand Theater.