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A comparison of North American and Asian exposure-response data for ozone effects on crop yields
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2009 (Engelska)Ingår i: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 43, nr 12, s. 1945-1953Artikel, forskningsöversikt (Refereegranskat) Published
Abstract [en]

Modelling-based studies to assess the extent and magnitude of ozone (O-3) risk to agriculture in Asia suggest that yield losses of 5-20% for important crops may be common in areas experiencing elevated O-3 concentrations. These assessments have relied on European and North American dose-response relationships and hence assumed an equivalent Asian crop response to O-3 for local cultivars, pollutant conditions and climate. To test this assumption we collated comparable dose-response data derived from fumigation, filtration and EDU experiments conducted in Asia on wheat. rice and leguminous crop species. These data are pooled and compared with equivalent North American dose-response relationships. The Asian data show that at ambient O-3 concentrations found at the study sites (which vary between similar to 35-75 ppb 4-8 h growing season mean), yield losses for wheat, rice and legumes range between 5-48, 3-47 and 10-65%, respectively. The results indicate that Asian grown wheat and rice cultivars are more sensitive to O-3 than the North American dose-response relationships would suggest. For legumes the scatter in the data makes it difficult to reach any equivalent conclusion in relative sensitivities. As such, existing modelling-based risk assessments may have substantially underestimated the scale of the problem in Asia through use of North American derived dose-response relationships. (c) 2009 Elsevier Ltd. All rights reserved.

Ort, förlag, år, upplaga, sidor
2009. Vol. 43, nr 12, s. 1945-1953
Nyckelord [en]
Ozone, Crop yield, Asia, Rice, Wheat, Soybean, Food security
Nationell ämneskategori
Miljövetenskap
Forskningsämne
Miljö
Identifikatorer
URN: urn:nbn:se:smhi:diva-621DOI: 10.1016/j.atmosenv.2009.01.005ISI: 000264999900001OAI: oai:DiVA.org:smhi-621DiVA, id: diva2:807261
Tillgänglig från: 2015-04-23 Skapad: 2015-04-21 Senast uppdaterad: 2017-12-04Bibliografiskt granskad

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