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Groundwater contribution to streamflow sustains biodiversity and enhances ecosystem services, especially under monsoon-driven climate where stream baseflow is often the only available water resource during the dry season. We assessed how land use change influences streamflow and its groundwater c...


Ribolzi, OlivierLacombe, GuillaumePierret, A.Robain, H.Sounyafong, P.Rouw, Anneke deSoulileuth, B.Mouche, E.Huon, S.Silvera, N.Latxachak, K.O.Sengtaheuanghoung, OlothValentin, C.[Interacting land use and soil surface dynamics control groundwater outflow in a montane catchment of the lower Mekong basin]Interacting land use and soil surface dynamics control groundwater outflow in a montane catchment of the lower Mekong basin

In Montane Southeast Asia, deforestation and unsuitable combinations of crops and agricultural practices degrade soils at an unprecedented rate. Typically, smallholder farmers gain income from “available” land by replacing fallow or secondary forest by perennial crops. We aimed to understand how ...


Lacombe, GuillaumeValentin, ChristianSounyafong, P.Rouw, Anneke deSoulileuth, B.Silvera, N.Pierret, A.Sengtaheuanghoung, OlothRibolzi, Olivier[Linking crop structure, throughfall, soil surface conditions, runoff and soil detachment: 10 land uses analyzed in northern Laos]Linking crop structure, throughfall, soil surface conditions, runoff and soil detachment: 10 land uses analyzed in northern Laos

The humid tropics are exposed to an unprecedented modernization of agriculture involving rapid and highly-mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as an unambiguous solution for restoring ecosystem services and enhancing biodiversity. One cons...


Lacombe, GuillaumeRibolzi, OlivierRouw, Anneke dePierret, AlainLatsachak, K.Silvera, N.Pham Dinh, R.Orange, D.Janeau, Jean L.Soulileuth, B.Robain, H.Taccoen, A.Sengphaathith, P.Mouche, E.Sengtaheuanghoung, OlothTran Duc, T.Valentin, Christian[Afforestation by natural regeneration or by tree planting: examples of opposite hydrological impacts evidenced by long-term field monitoring in the humid tropics]Afforestation by natural regeneration or by tree planting: examples of opposite hydrological impacts evidenced by long-term field monitoring in the humid tropics

Groundwater is a vital resource for rural populations in tropical areas who depend on seasonal rainfall. Groundwater is often the only source of water feeding streams, allowing them to flow throughout the dry season. The aim of this study was to evaluate two models for estimating the average dura...


Bourdon, EmmanuelBlavet, D.Luankongkam, O.Soulileuth, B.Chanhphengxay, A.Pierret, AlainRibolzi, Olivier[Semi-quantitative evaluation of waterlogging duration using two models based on soil colour in a representative upland catchment of northern Lao PDR]Semi-quantitative evaluation of waterlogging duration using two models based on soil colour in a representative upland catchment of northern Lao PDR
Huon, S.Ribolzi, OlivierAubry, E.Soulileuth, B.Longchamp, M.Angeli, N.Sengtaheuanghoung, Oloth[Iron and manganese concentration levels in watercress cultivated within the main stream of the Houay Pano catchment, northern Lao PDR]Iron and manganese concentration levels in watercress cultivated within the main stream of the Houay Pano catchment, northern Lao PDR

The humid tropics are exposed to an unprecedented modernisation of agriculture involving rapid and mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as an unambiguous solution for restoring ecosystem services and enhancing biodiversity. One consequence...


Lacombe, GuillaumeRibolzi, OlivierRouw, Anneke dePierret, A.Latsachak, K.Silvera, N.Dinh, R.P.Orange, D.Janeau, Jean L.Soulileuth, B.Robain, H.Taccoen, A.Sengphaathith, P.Mouche, E.Sengtaheuanghoung, OlothTran Duc, T.Valentin, Christian[Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling]Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling

Soil erosion supplies large quantities of sediments to rivers of Southeastern Asia. It reduces soil fertility of agro-ecosystems located on hillslopes, and it degrades, downstream, water resource quality and leads to the siltation of reservoirs. An increase in the surface area covered with commer...


Ribolzi, OlivierEvrard, O.Huon, S.Rouw, Anneke deSilvera, N.Latsachack, K.O.Soulileuth, B.Lefevre, I.Pierret, A.Lacombe, GuillaumeSengtaheuanghoung, OlothValentin, Christian[From shifting cultivation to teak plantation: effect on overland flow and sediment yield in a montane tropical catchment]From shifting cultivation to teak plantation: effect on overland flow and sediment yield in a montane tropical catchment

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