THE PRESENCE OF STRUCTURAL SURFACE WAXES ON CONIFEROUS NEEDLES AFFECTS THE PATTERN OF DRY DEPOSITION OF FINE PARTICLES

被引：56

作者：

BURKHARDT, J

PETERS, K

CROSSLEY, A

机构：

[1] UNIV BAYREUTH, DEPT CLIMATOL, BAYREUTH INST TERR ECOSYST RES, D-95440 BAYREUTH, GERMANY

[2] INST TERR ECOL, EDINBURGH RES STN, PENICUIK EH26 0QB, MIDLOTHIAN, SCOTLAND

来源：

JOURNAL OF EXPERIMENTAL BOTANY | 1995年 / 46卷 / 288期

关键词：

CONIFERS; AIR POLLUTION; STOMATA; DRY DEPOSITION; AEROSOLS;

D O I：

10.1093/jxb/46.7.823

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Monodisperse particles (particle diameter approximate to 0.5 mu m) were produced by a particle generator and tagged with a fluorescent dye. The particles were injected into a small wind tunnel, into which single needles or small branches of Picea abies, Pinus sylvestris, and Abies alba had been introduced. The needles were examined after treatment, using fluorescence microscopy, and the spatial patterns of particle deposition determined. The particles deposited preferentially in the stomatal regions of the needles. In these areas the incidence of micro-roughness due to epicuticular waxes is highest, reducing the laminar boundary layer of the needle. Atmospheric particles of less than 1 pm diameter are mostly hygroscopic and the potential effect of substantial deposition of these particles to stomatal surroundings and their influence on plant water relations is discussed.

引用

页码：823 / 831

页数：9

共 43 条

[1] ECOTYPE DIFFERENCES IN LEAF SURFACE PROPERTIES OF AGROSTIS-STOLONIFERA FROM SALT-MARSH, SPRAY ZONE AND INLAND HABITATS [J].