Articles | Volume 13, issue 11
Biogeosciences, 13, 3267–3281, 2016
Biogeosciences, 13, 3267–3281, 2016

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 et al.

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Cited articles

ASTM: Standard D3977-97, Standard Test Methods for Determining Sediment Concentration in Water Samples, ASTM International, West Conshohocken, PA, 2013.
Bray, F.: The rice economies: technology and development in Asian societies, Blackwell, London, 1986.
Cao, Z. H., Ding, J. L., Hu, Z. Y., Knicker, H., Kögel-Knabner, I., Yang, L. Z., Yin, R., Lin, X. G., Dong, Y. H., Cao, Z. H., Hu, Z. Y., Yang, L. Z., Yin, R., Lin, X. G., and Dong, Y. H.: Ancient paddy soils from the Neolithic age in China's Yangtze River Delta, Naturwissenschaften, 93, 232–236,, 2006.
Chaplot, V. and Poesen, J.: Sediment, soil organic carbon and runoff delivery at various spatial scales, Catena, 88, 46–56, 2012.
Chaplot, V., Khampaseuth, X., Valentin, C., and Le Bissonnais, Y.: Interrill erosion in the sloping lands of northern Laos subjected to shifting cultivation, Earth Surf. Proc. Land., 32, 415–428,, 2007.
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.
Final-revised paper