Nitrogen sources, processes, and associated impacts of climate and land-use changes in a coastal China watershed: Insights from the INCA-N model.
作者： Ayu Ervinia , Jinliang Huang , Zhenyu Zhang
DOI: 10.1016/J.MARPOLBUL.2020.111502
关键词:
摘要: Abstract The Integrated Nitrogen CAtchments (INCA-N) model was applied to identify the sources and processes controlling riverine nitrogen (N) export in Jiulong River watershed, coastal China. Future N exports were simulated under various scenarios of climate land-use changes. modeling results showed good agreement between observed values streamflow, concentrations, loads. It revealed that fertilizer application, atmospheric deposition, sewage discharges main sources, while primary cycling included soil nitrification, denitrification, leaching. Nitrate-N predominantly impacted by change, whereas ammonium-N more affected change. coupled effects changes projected amplify 30%, 36%, 36% for nitrate-N 32%, 48%, 71% during years 2030s, 2050s, 2080s, respectively.
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