Pollutant Deposition to Individual Leaves and Plant Canopies: Sites of Regulation and Relationship to Injury

摘要

The objective was twofold: (1) to characterize the processes governing the deposition of pollutants to individual leaves and plant canopies and (2) to relate deposition to the pollutant's effects on a plant's physiology and growth. The focus is principally dry deposited, regionally distributed gases of importance because of either their phytotoxicity (e.g., ozone, O sub 3 ; sulfur dioxide, SO sub 2 ; nitrogen dioxide, NO sub 2 ; peroxyacetyl nitrate, PAN; hydrogen sulfide, H sub 2 S; hydrogen peroxide, H sub 2 O sub 2 ) or influence on biogeochemical cycling in terrestrial ecosystems (e.g., carbonyl sulfide; COS; ammonia, NH sub 3 ; nitric acid vapor, HNO sub 3 ). Where appropriate, the sedimentation of particles and the interception of cloud water by plant canopies and individual leaves are discussed. (ERA citation 13:016120)