[口头报告]Global changes alter the amount and composition of land carbon deliveries to European rivers and seas

Global changes alter the amount and composition of land carbon deliveries to European rivers and seas
编号:1813 稿件编号:3314 访问权限:私有 更新:2023-04-10 17:10:59 浏览:149次 口头报告

报告开始:2023年05月07日 10:32 (Asia/Shanghai)

报告时间:12min

所在会议:[21] 21、碳中和科学与技术 » [21A-2] 21A-2 碳中和科学与技术

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摘要
Lateral carbon transfer along the land-ocean continuum is a key component of global carbon cycle, yet its response to global change is poorly quantified. Here, we use a land-surface model to simulate vertical (soil-plant-atmosphere) and lateral (land-river-ocean) carbon exchanges in Europe between 1901–2014 and investigate the effect of atmospheric carbon dioxide, climate and land use changes on lateral carbon transfer. We find that global change during 1901–2014 led to a significant increase in the total terrestrial carbon delivery to European rivers (33% increase) and to the sea (20% increase). Carbon delivery increased in the dissolved phase and decreased in the particulate phase. Climate change, increased atmospheric carbon dioxide and land-use change explain 62%, 36% and 2% of the temporal change in European lateral carbon transfer during the study period, respectively. Our findings suggest that redistribution of soil carbon due to lateral carbon transfer induced a 5% reduction in the net land carbon sink in Europe.
 
关键字
Global change,Lateral carbon transfer,terrestrial carbon cycle,soil erosion,climate change
报告人
张海成
中山大学

稿件作者
张海成 中山大学
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