Sediment trap efficiency of paddy fields at the watershed scale in a  mountainous catchment in northwest Vietnam

Slaets, Johanna I. F.; Schmitter, Petra; Hilger, Thomas; Vien, Tran Duc; Cadisch, Georg

doi:https://doi.org/10.5194/bg-13-3267-2016

Articles | Volume 13, issue 11

https://doi.org/10.5194/bg-13-3267-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-13-3267-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 11

Research article

|

03 Jun 2016

Research article |

| 03 Jun 2016

Sediment trap efficiency of paddy fields at the watershed scale in a mountainous catchment in northwest Vietnam

Johanna I. F. Slaets, Petra Schmitter, Thomas Hilger, Tran Duc Vien, and Georg Cadisch

Supplement

https://doi.org/10.5194/bg-13-3267-2016-supplement

Data sets

Quantifying uncertainty on sediment loads using bootstrap confidence intervals J. I. F. Slaets, H.-P. Piepho, P. Schmitter, H. P. Hilger, and G. Cadisch https://www.uni-hohenheim.de/bioinformatik/beratung/index.htm

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Short summary

Maize production on steep slopes causes erosion. Where the eroded material ends up is not well understood. This study assessed transport of sediment in mountainous Vietnam, where maize is cultivated on slopes and rice is cultivated in valleys. Per year, 64 tons per hectare of sediments are brought into the rice fields and 28 tons of those are deposited there. The sediment fraction captured by the paddies is mostly sandy, while fertile silt and clay are exported. Upland erosion thus impacts rice production.