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The present study was undertaken in Lao PDR to investigate the impacts of organic and clay-based soil amendments on maize yield, total nutrient uptake and crop water productivity (CWP), and analyze the economic return of such interventions. Structured field experiments were established over two c...


Mekuria, Wolde M.Noble, A.D.Hoanh, Chu ThaiMcCartney, Matthew P.Sengtaheuanghoung, OlothSipaseuth, N.Douangsavanh, SomphasithLangan, Simon J.Getnet, Kindie[The potential role of soil amendments in increasing agricultural productivity and improving the livelihood of smallholders in Lao PDR]The potential role of soil amendments in increasing agricultural productivity and improving the livelihood of smallholders in Lao PDR

To provide data that are lacking at the catchment scale, outflow and sediment yield have Been monitored from 8 small (0.5-64 ha) rural catchments since 2001 in northern Lao PDR. Soil conservation strategies have been developed and tested on three of these catchments. Results clearly show that sed...


Sengtaheuanghoung, OlothValentin, ChristianRibolzi, OlivierRouw, Anneke deThiebaux, Jean-Pierre[The impact of rapid land use changes upon sediment yields from agricultural catchments in northern Lao PDR]The impact of rapid land use changes upon sediment yields from agricultural catchments in northern Lao PDR

We investigated whether the Vietnam War bombing and conflict-induced exodus could have altered the hydrological behaviour of the Mekong Basin. The rainfall-runoff relationship was analysed in 2 catchments over period 1960-2004 (figure 1). In each catchment, rainfall and runoff time series togethe...


Lacombe, GuillaumePierret, AlainHoanh, Chu ThaiSengtaheuanghoung, Oloth[Hydrological consequences of armed conflicts and massive migrations in the Lower Mekong Basin over the second half of the 20th Century. [Abstract only].]Hydrological consequences of armed conflicts and massive migrations in the Lower Mekong Basin over the second half of the 20th Century. [Abstract only].

We investigated the impact of land-use change on the hydrology of different major Lao tributary watersheds of Mekong River. The region is the North of Laos centred on Luang Prabang and the watersheds are the Nam Khan, Nam Ou, Nam Suong, Nam Lik and Nam Ngum. An additional small agricultural catch...


Mouche, E.Moussu, F.Mugler, C.Ribolzi, OlivierValentin, C.Sengtaheuanghoung, OlothLacombe, Guillaume[Impact of land-use change on the hydrology of North Lao PDR watersheds]Impact of land-use change on the hydrology of North Lao PDR watersheds

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,...


Evrard, O.Ribolzi, OlivierHuon, S.Rouw, Anneke deSilvera, N.Latsachack, K. O.Soulileuth, B.Lefevre, I.Lacombe, GuillaumeSengtaheuanghoung, OlothValentin, C.[Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only]]Conversion of traditional cropland into teak plantations strongly increased soil erosion in montane catchments of Southeastern Asia [Abstract only]

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