{"title":"Simulative analysis of ammonia exchange between the atmosphere and plant communities","authors":"Thomas R. Sinclair, Raymond F. Van Houtte","doi":"10.1016/0304-1131(82)90016-9","DOIUrl":null,"url":null,"abstract":"<div><p>A soil-plant-atmosphere model was used to evaluate the effects on ammonia (NH<sub>3</sub>) exchange of changing leaf NH<sub>3</sub> compensation concentration, atmospheric NH<sub>3</sub> concentration, and soil surface NH<sub>3</sub> flux density. An increase in NH<sub>3</sub> compensation concentration from 0.5 to 5.0 μg/m<sup>3</sup> resulted in a small, constant decrease in the NH<sub>3</sub> uptake rates by the crop canopy under all conditions simulated. Ambient concentration and soil flux density proved to be the most critical variables in influencing net vegetative-soil NH<sub>3</sub> exchange. Variation in soil flux density determined whether the system evolved or consumed NH<sub>3</sub>. Consequently, differences between systems in soil flux density may result in NH<sub>3</sub> transfer via the atmosphere from agricultural lands to natural lands.</p></div>","PeriodicalId":100064,"journal":{"name":"Agriculture and Environment","volume":"7 3","pages":"Pages 237-242"},"PeriodicalIF":0.0000,"publicationDate":"1982-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-1131(82)90016-9","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agriculture and Environment","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0304113182900169","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
A soil-plant-atmosphere model was used to evaluate the effects on ammonia (NH3) exchange of changing leaf NH3 compensation concentration, atmospheric NH3 concentration, and soil surface NH3 flux density. An increase in NH3 compensation concentration from 0.5 to 5.0 μg/m3 resulted in a small, constant decrease in the NH3 uptake rates by the crop canopy under all conditions simulated. Ambient concentration and soil flux density proved to be the most critical variables in influencing net vegetative-soil NH3 exchange. Variation in soil flux density determined whether the system evolved or consumed NH3. Consequently, differences between systems in soil flux density may result in NH3 transfer via the atmosphere from agricultural lands to natural lands.
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