extremely significantp < 0.01
2a , compared with T1, the leaf thickness of T2 and T3 were significantly increased, and the difference reached a significant level ( p < 0.05) and an extremely significant level ( p < 0.01).
2a , compared with T1, the leaf thickness of T2 and T3 were significantly increased, and the difference reached a significant level ( p < 0.05) and an extremely significant level ( p < 0.01).
In this study, leaf tissue density showed an increasing trend with the aggravation of atmospheric particulate matter pollution.