Channel cross-section heterogeneity of particulate organic carbon transport in the Huanghe

Abstract 13 C and 14 C). Clear vertical and lateral heterogeneities of the physical and chemical properties of SPM are observed within the river cross-section. For instance, finer SPM carry more POC in general with higher 14 C activity near the surface of the right bank. Notably, we discuss how bank erosion in the alluvial plain is likely to generate lateral heterogeneity in POC composition. The Huanghe POC is millennial-aged (4020 ±  500 radiocarbon years) and dominated by organic carbon (OC) from the biosphere, while the lithospheric fraction is ca. 12 %. The mobilization of aged and refractory OC, including radiocarbon-dead biospheric OC, from deeper soil horizons of the loess–paleosol sequence through erosion in the Chinese Loess Plateau is an important mechanism contributing to fluvial POC in the Huanghe drainage basin. Altogether, anthropogenic activities can drastically change the compositions and transport dynamics of fluvial POC, consequentially altering the feedback of the source-to-sink trajectory of a river system to regional and global carbon cycles.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Channel cross-section heterogeneity of particulate organic carbon transport in the Huanghe ; volume:12 ; number:1 ; year:2024 ; pages:347-365 ; extent:19 ; Earth surface dynamics ; 12, Heft 1 (2024), 347-365 (gesamt 19)

Beteiligte, Orts- und Zeitangaben

• Urheber: Ke, Yutian ; Calmels, Damien ; Bouchez, Julien ; Massault, Marc ; Chetelat, Benjamin ; Noret, Aurélie ; Cai, Hongming ; Chen, Jiubin ; Gaillardet, Jérôme ; Quantin, Cécile

Weitere Informationen

• DOI: 10.5194/esurf-12-347-2024
• URN: urn:nbn:de:101:1-2024022203313158207516
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 14.08.2025, 11:00 MESZ