Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only]
Soil erosion delivers an excessive quantity of sediment to rivers of Southeastern Asia. Land use is rapidly changing in this region of the world, and these modifications may further accelerate soil erosion in this area. Although the conversion of forests into cropland has often been investigated, mu...
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
2017
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/97646 |
| _version_ | 1855542590340857856 |
|---|---|
| author | Evrard, O. Ribolzi, Olivier Huon, S. Rouw, Anneke de Silvera, N. Latsachack, K.O. Soulileuth, B. Lefevre, I. Lacombe, Guillaume Sengtaheuanghoung, Oloth Valentin, Christian |
| author_browse | Evrard, O. Huon, S. Lacombe, Guillaume Latsachack, K.O. Lefevre, I. Ribolzi, Olivier Rouw, Anneke de Sengtaheuanghoung, Oloth Silvera, N. Soulileuth, B. Valentin, Christian |
| author_facet | Evrard, O. Ribolzi, Olivier Huon, S. Rouw, Anneke de Silvera, N. Latsachack, K.O. Soulileuth, B. Lefevre, I. Lacombe, Guillaume Sengtaheuanghoung, Oloth Valentin, Christian |
| author_sort | Evrard, O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil erosion delivers an excessive quantity of sediment to rivers of Southeastern Asia. Land use is rapidly changing in this region of the world, and these modifications may further accelerate soil erosion in this area. Although the conversion of forests into cropland has often been investigated, much fewer studies have addressed the replacement of traditional slash-and-burn cultivation systems with commercial perennial monocultures such as teak plantations. The current research investigated the impact of this land use change on the hydrological response and the sediment yields from a representative catchment of Northern Laos (Houay Pano, 0.6 km²) where longterm monitoring (2002-2014) was conducted (http://msec.obs-mip.fr/). The results showed a significant growth in the overland flow contribution to stream flow (from 16 to 31%). Furthermore, sediment yields strongly increased from 98 to 609 Mg km-2. These changes illustrate the severity of soil erosion processes occurring under teak plantations characterized by the virtual absence of understorey vegetation to dissipate raindrop energy, which facilitates the formation of an impermeable surface crust. This counter-intuitive increase of soil erosion generated by afforestation reflects the difficulty to find sustainable production solutions for the local populations of Southeastern Asia. To reduce soil loss under teak plantations, the development of extensive agro-forestry practices could be promoted. |
| format | Conference Paper |
| id | CGSpace97646 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | CGSpace976462024-03-06T10:16:43Z Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] Evrard, O. Ribolzi, Olivier Huon, S. Rouw, Anneke de Silvera, N. Latsachack, K.O. Soulileuth, B. Lefevre, I. Lacombe, Guillaume Sengtaheuanghoung, Oloth Valentin, Christian erosion sediment land use farmland teak plantations catchment areas stream flow vegetation local communities agroforestry Soil erosion delivers an excessive quantity of sediment to rivers of Southeastern Asia. Land use is rapidly changing in this region of the world, and these modifications may further accelerate soil erosion in this area. Although the conversion of forests into cropland has often been investigated, much fewer studies have addressed the replacement of traditional slash-and-burn cultivation systems with commercial perennial monocultures such as teak plantations. The current research investigated the impact of this land use change on the hydrological response and the sediment yields from a representative catchment of Northern Laos (Houay Pano, 0.6 km²) where longterm monitoring (2002-2014) was conducted (http://msec.obs-mip.fr/). The results showed a significant growth in the overland flow contribution to stream flow (from 16 to 31%). Furthermore, sediment yields strongly increased from 98 to 609 Mg km-2. These changes illustrate the severity of soil erosion processes occurring under teak plantations characterized by the virtual absence of understorey vegetation to dissipate raindrop energy, which facilitates the formation of an impermeable surface crust. This counter-intuitive increase of soil erosion generated by afforestation reflects the difficulty to find sustainable production solutions for the local populations of Southeastern Asia. To reduce soil loss under teak plantations, the development of extensive agro-forestry practices could be promoted. 2017 2018-10-12T03:50:47Z 2018-10-12T03:50:47Z Conference Paper https://hdl.handle.net/10568/97646 en Limited Access Evrard, O.; Ribolzi, O.; Huon, S.; de Rouw. A.; Silvera, N.; Latsachack, K. O.; Soulileuth, B.; Lefevre, I.; Lacombe, Guillaume; Sengtaheuanghoung, O.; Valentin, C. 2017. Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] Paper presented at the American Geophysical Union Fall Meeting (AGU), New Orleans, USA, 11-15 December 2017. 1p. |
| spellingShingle | erosion sediment land use farmland teak plantations catchment areas stream flow vegetation local communities agroforestry Evrard, O. Ribolzi, Olivier Huon, S. Rouw, Anneke de Silvera, N. Latsachack, K.O. Soulileuth, B. Lefevre, I. Lacombe, Guillaume Sengtaheuanghoung, Oloth Valentin, Christian Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title | Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title_full | Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title_fullStr | Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title_full_unstemmed | Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title_short | Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only] |
| title_sort | conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of southeastern asia abstract only |
| topic | erosion sediment land use farmland teak plantations catchment areas stream flow vegetation local communities agroforestry |
| url | https://hdl.handle.net/10568/97646 |
| work_keys_str_mv | AT evrardo conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT ribolziolivier conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT huons conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT rouwannekede conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT silveran conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT latsachackko conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT soulileuthb conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT lefevrei conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT lacombeguillaume conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT sengtaheuanghoungoloth conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly AT valentinchristian conversionoftraditionalcroplandintoteakplantationsstronglyincreasedsoilerosioninmontanecatchmentsofsoutheasternasiaabstractonly |