Impacts of ozone on trees and crops
Felzer, Benjamin S.
Cronin, Timothy W.
Reilly, John M.
Melillo, Jerry M.
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KeywordOzone; Nitrogen deposition; Vegetation; Photosynthesis; Stomatal conductance; Crop yield; Carbon storage
In this review article, we explore how surface-level ozone affects trees and crops with special emphasis on consequences for productivity and carbon sequestration. Vegetation exposure to ozone reduces photosynthesis, growth, and other plant functions. Ozone formation in the atmosphere is a product of NOx that are also a source of nitrogen deposition. Reduced carbon sequestration of temperate forests resulting from ozone is likely offset by increased carbon sequestration from nitrogen fertilization. However, since fertilized croplands are generally not nitrogen-limited, capping ozone-polluting substances in the U.S., Europe, and China can reduce future crop yield loss substantially.
Author Posting. © The Author(s), 2007. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Comptes Rendus Geosciences 339 (2007): 784-798, doi:10.1016/j.crte.2007.08.008.