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Johnston, Robyn M.Hoanh, Chu ThaiLacombe, GuillaumeLefroy, R.D.B.Pavelic, PaulFry, Carolyn[Managing water in rainfed agriculture in the Greater Mekong Subregion. Final report prepared by IWMI for Swedish International Development Cooperation Agency (Sida).]Managing water in rainfed agriculture in the Greater Mekong Subregion. Final report prepared by IWMI for Swedish International Development Cooperation Agency (Sida).

Study region : In this study, 33 catchments across the Lower Mekong Basin in Southeast Asia are examined to detect historical changes in their hydrological response via a model-based methodology. Study focus : Intensive development over the past half century across Southeast Asia’s Lower Mekong B...


Lyon, S.W.King, K.Polpanich, O.Lacombe, Guillaume[Assessing hydrologic changes across the Lower Mekong Basin]Assessing hydrologic changes across the Lower Mekong Basin

Hydropower and irrigation developments to address rising demand for food and energy are modifying the water balance of the Mekong Basin. Infrastructure investment decisions are also frequently made from a sub-catchment perspective. This paper compares river flows with irrigation development stage...


Lacombe, GuillaumeDouangsavanh, SomphasithBaker, J.Hoanh, Chu ThaiBartlett, R.Jeuland, M.Phongpachith, C.[Are hydropower and irrigation development complements or substitutes?: the example of the Nam Ngum River in the Mekong Basin]Are hydropower and irrigation development complements or substitutes?: the example of the Nam Ngum River in the Mekong Basin

In the Dry Zone of Myanmar, variability in water resources and insufficient capacity to manage that variability is one of the main causes of food insecurity. Seasonal water scarcity is widely acknowledged to be a key constraint to livelihoods and peoples’ wellbeing. This paper describes analyses ...


Douangsavanh, SomphasithMcCartney, Matthew P.Lacombe, Guillaume[Mapping irrigated areas in the dry zone of Myanmar by differentiating evapotranspiration from irrigated and rain-fed areas [Abstract only]]Mapping irrigated areas in the dry zone of Myanmar by differentiating evapotranspiration from irrigated and rain-fed areas [Abstract only]

Increasing demographic pressure, economic development and resettlement policies in the Lower Mekong Basin induce greater population dependency on river flow to satisfy growing domestic and agricultural water demands. This dependency is particularly tight in upland areas where alternative water re...


Lacombe, GuillaumeDouangsavanh, SomphasithVogel, R.McCartney, Matthew P.Chemin, Yann H.Rebelo, Lisa-MariaSotoukee, Touleelor[Simple power-law models to predict flow metrics for water resource and risk management along the Mekong tributaries. [Abstract only]]Simple power-law models to predict flow metrics for water resource and risk management along the Mekong tributaries. [Abstract only]

Hiwasaki, L.Bolliger, Adrian M.Lacombe, GuillaumeRaneri, Jessica E.Schut, MarcStaal, Steven J.[Integrated systems research for sustainable smallholder agriculture in the Central Mekong: Achievements and challenges of implementing integrated systems research]Integrated systems research for sustainable smallholder agriculture in the Central Mekong: Achievements and challenges of implementing integrated systems research

Lacombe, GuillaumeBolliger, Adrian M.Harrison, RhettTo Thi Thu Ha[Integrated tree, crop and livestock technologies to conserve soil and water, and sustain smallholder farmers’ livelihoods in Southeast Asian uplands]Integrated tree, crop and livestock technologies to conserve soil and water, and sustain smallholder farmers’ livelihoods in Southeast Asian uplands

Though there are surprisingly few estimates of the economic benefits of coordinated infrastructure development and operations in international river basins, there is a widespread belief that improved cooperation is beneficial for managing water scarcity and variability. Hydro-economic optimizatio...


Jeuland, M.Baker, J.Bartlett, R.Lacombe, Guillaume[The costs of uncoordinated infrastructure management in multi-reservoir river basins]The costs of uncoordinated infrastructure management in multi-reservoir river basins

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

Groundwater recharge remains almost totally unknown across the Mekong River Basin, hindering the evaluation of groundwater potential for irrigation. A regional regression model was developed to map groundwater recharge across the Lower Mekong Basin where agricultural water demand is increasing, e...


Lacombe, GuillaumeDouangsavanh, SomphasithVongphachanh, S.Pavelic, Paul[Regional assessment of groundwater recharge in the lower Mekong Basin]Regional assessment of groundwater recharge in the lower Mekong Basin

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