|
|
|
篇目详细内容 |
|
【篇名】 |
Seasonal variations in leaf capturing of particulate matter, surface wettability and micromorphology in urban tree species |
|
【刊名】 |
Frontiers of Environmental Science and Engineering in China |
|
【刊名缩写】 |
Front.Environ.Sci.Engin.China |
|
【ISSN】 |
2095-2201 |
|
【EISSN】 |
2095-221X |
|
【DOI】 |
10.1007/s11783-013-0524-1 |
|
【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
|
【出版年】 |
2013 |
|
【卷期】 |
7
卷4期 |
|
【页码】 |
579-588
页,共
10
页 |
|
【作者】 |
Huixia WANG;
Hui SHI;
Yangyang LI;
Ya YU;
Jun ZHANG;
|
|
【关键词】 |
contact angle; particulate matter; retention amount |
【摘要】 |
|
The seasonal changes in leaf particulate matter (PM) accumulation, surface wettability and micromorphology in urban tree species, including Sophora japonica (S. japonica), Platanus acerifolia (P. acerifolia) and Cedrus deodara (C. deodara), were studied during a single growing season. The three species showed distinct seasonal trends in PM accumulation, increasing from spring to autumn (or winter) even during the rainy season, but at different rates. During the study, the leaf PM retention amount of P. acerifolia, a species with ridged leaf surfaces, was significantly higher than that of S. japonica and C. deodara, species with waxy leaf surfaces. The contact angles of water droplets on leaves decreased with leaf age except on the abaxial surface of S. japonica, which remained non-wettable or highly non-wettable throughout the growing season; the decrease in the contact angle on adaxial surface of S. japonica was greater when compared with P. acerifolia and C. deodara. A significant and negative relationship existed between leaf PM retention amounts and contact angles on adaxial surface of leaves of all three species. The increase in wettability, probably caused when epicuticular wax was destroyed by mechanical and chemical abrasion, seemed to be the main factor leading to seasonal variations in leaf PM accumulation. |
|
