The Multiscale TROPIcal CatchmentS critical zone observatory M-TROPICS dataset II: Land use, hydrology and sediment production monitoring in Houay Pano, northern Lao PDR

Boithias Laurie, Auda Yves, Audry Stéphane, Bricquet Jean-Pierre, Chanhphengxay Alounsavath, Chaplot Vincent, De Rouw Anneke, Henry des Tureaux Thierry, Huon Sylvain, Janeau Jean-Louis, Latsachack Keo Oudone, Le Troquer Yann, Lestrelin Guillaume, Maeght Jean-Luc, Marchand Pierre, Moreau Pierre, Noble A.D., Pando‐Bahuon Anne, Phachomphon Kongkeo, Phanthavong Khambai, Pierret Alain, Ribolzi Olivier, Riotte Jean, Robain Henri, Rochelle-Newall Emma, Sayavong Saysongkham, Sengtaheuanghoung Oloth, Silvera Norbert, Sipaseuth Nivong, Soulileuth Bounsamai, Souliyavongsa Xaysatith, Sounyaphong Phapvilay, Tasaketh Sengkeo, Thammahacksa Chantanousone, Thiebaux Jean-Pierre, Valentin Christian, Vigiak Olga, Viguier Marion, Xayyathip Khampaseuth. 2021. The Multiscale TROPIcal CatchmentS critical zone observatory M-TROPICS dataset II: Land use, hydrology and sediment production monitoring in Houay Pano, northern Lao PDR. Hydrological Processes, 35 (5):e14126, 9 p.

Quartile : Q2, Sujet : WATER RESOURCES

Résumé : Mountain regions of the humid tropics are characterized by steep slopes and heavy rains. These regions are thus prone to both high surface runoff and soil erosion. In Southeast Asia, uplands are also subject to rapid land-use change, predominantly as a result of increased population pressure and market forces. Since 1998, the Houay Pano site, located in northern Lao PDR (19.85_N 102.17_E) within the Mekong basin, aims at assessing the long-term impact of the conversion of traditional slash-and-burn cultivation systems to commercial perennial monocultures such as teak tree plantations, on the catchment hydrological response and sediment yield. The instrumented site monitors hydro-meteorological and soil loss parameters at both microplot (1 m2) and small catchment (0.6 km2) scales. The monitored catchment is part of the network of critical zone observatories named Multiscale TROPIcal CatchmentS (M-TROPICS). The data shared by M-TROPICS in Houay Pano are (1) rainfall, (2) air temperature, air relative humidity, wind speed, and global radiation, (3) catchment land use, (4) stream water level, suspended particulate matter, bed particulate matter and stones, (5) soil surface features, and (6) soil surface runoff and soil detachment. The dataset has already been used to interpret suspended particulate matter and bed particulate matter sources and dynamics, to assess the impact of land-use change on catchment hydrology, soil erosion, and sediment yields, to understand bacteria fate and weed seed transport across the catchment, and to build catchment-scale models focused on hydrology and water quality issues. The dataset may be further used to, for example, assess the role of headwater catchments in large tropical river basin hydrology, support the interpretation of new variables measured in the catchment (e.g., contaminants other than faecal bacteria), and assess the relative impacts of both climate and land-use change on the catchment.

Mots-clés Agrovoc : hydrologie, bassin versant, production de sédiments, Tectona grandis, utilisation des terres, dynamique des populations, évaluation de l'impact, sédiment, érosion, changement climatique, zone humide, eau de ruissellement, dynamique des sédiments

Mots-clés géographiques Agrovoc : République démocratique populaire lao, Asie du Sud-Est

Mots-clés libres : Flash flood, Land-use change, Soil erosion, Southeast Asia, Surface runoff, Suspended sediment, Teak tree plantations, Water level

Agences de financement hors UE : Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Ministry of the Agriculture and Forestry of LaoLao People's Democratic Republic, Université Toulouse III - Paul Sabatier, Observatoire Midi-Pyrénées; Sorbonne Université, International Water Management Institute, Asian Development Bank

Auteurs et affiliations

• Boithias Laurie, Université de Toulouse (FRA) - auteur correspondant
• Auda Yves, Université de Toulouse (FRA)
• Audry Stéphane, Université de Toulouse (FRA)
• Bricquet Jean-Pierre, IRD (FRA)
• Chanhphengxay Alounsavath, NAFRI (LAO)
• Chaplot Vincent, Sorbonne université (FRA)
• De Rouw Anneke, IRD (FRA)
• Henry des Tureaux Thierry, Sorbonne université (FRA)
• Huon Sylvain, IRD (FRA)
• Janeau Jean-Louis, IRD (VNM)
• Latsachack Keo Oudone, IRD (LAO)
• Le Troquer Yann, Sorbonne université (FRA)
• Lestrelin Guillaume, CIRAD-ES-UMR TETIS (TUN) ORCID: 0000-0001-6207-218X
• Maeght Jean-Luc, IRD (THA)
• Marchand Pierre, Sorbonne université (FRA)
• Moreau Pierre, Sorbonne université (FRA)
• Noble A.D., IWMI (LAO)
• Pando‐Bahuon Anne, Sorbonne université (FRA)
• Phachomphon Kongkeo, Ministry of Agriculture and Forestry (Laos) (LAO)
• Phanthavong Khambai, IRD (LAO)
• Pierret Alain, IRD (LAO)
• Ribolzi Olivier, IRD (BFA)
• Riotte Jean, Université de Toulouse (FRA)
• Robain Henri, IRD (THA)
• Rochelle-Newall Emma, IRD (FRA)
• Sayavong Saysongkham, Ministry of Agriculture and Forestry (Laos) (LAO)
• Sengtaheuanghoung Oloth, Ministry of Agriculture and Forestry (Laos) (LAO)
• Silvera Norbert, IRD (FRA)
• Sipaseuth Nivong, Ministry of Agriculture and Forestry (Laos) (LAO)
• Soulileuth Bounsamai, IRD (LAO)
• Souliyavongsa Xaysatith, Ministry of Agriculture and Forestry (Laos) (LAO)
• Sounyaphong Phapvilay, IRD (LAO)
• Tasaketh Sengkeo, IRD (LAO)
• Thammahacksa Chantanousone, IRD (FRA)
• Thiebaux Jean-Pierre, Sorbonne université (FRA)
• Valentin Christian, IRD (FRA)
• Vigiak Olga, IWMI (LAO)
• Viguier Marion, IRD (LAO)
• Xayyathip Khampaseuth, Ministry of Agriculture and Forestry (Laos) (LAO)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605877/)

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