Fig. 7From: Intraspecific differences in plant functional traits are related to urban atmospheric particulate matterSampling position diagram of leaf samples. T1: outer sidewalk area (slightly polluted area of atmospheric particulate matter), T2: area between the relief road and the sidewalk (moderately polluted area of atmospheric particulate matter), T3: area in the middle of the main road (heavy pollution area of atmospheric particulate matter)Back to article page