Table 3.

Population density and vegetation at measurement sites.

	High-density residential	Medium/low-density residential	Commercial, business, industrial	Peri-urban background
Normalized Difference Vegetation Index (NDVI) (value range: 0–1)*	0.09 (0.03)	0.13 (0.04)	0.10 (0.03)	0.22 (0.06)
Population density (people/km2)	35,833 (42,011)	6881 (9612)	7966 (9220)	1701 (3867)

Data are summarized as means and standard deviations within land use areas.

*To capture vegetation in the area surrounding each site, we created a 200 m radius buffer around the site and calculated the average NDVI within it. NDVI can be a negative value, which would indicate water, though at all of our measurement sites, NDVI levels were positive between 0 and + 1.