Indicators of vehicular emission inputs into semi-arid roadside ecosystems
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- 作者：Julie A. Kenkela ; jkenkel@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Thomas D. Siska ; Kevin R. Hultinea ; b ; Steven E. Sesniea ; c ; Matthew A. Bowkerd ; Nancy Collins Johnsona
- 关键词：Nitrogen deposition ; Roadside ; δ15N ; Semi-arid vegetation ; Grand Canyon National Park
- 刊名：Journal of Arid Environments
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：134
- 期：Complete
- 页码：150-159
- 全文大小：1368 K
文摘
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Levels of NOx increase with traffic exposure across spatial and temporal scales.
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Levels of NOx at the South Entrance of GCNP appeared to be concentrated within 15 m of the roadside.
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Confier foliage closest to the roadside was isotopically closer to expected δ15N of vehicular emissions.
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Areas that display N deposition gradients should be studied to understand impacts of N deposition in semi-arid ecosystems.