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Many external effects of land use change are based on modifications of lateral flows of soil, water, air, fire or organisms. Lateral flows can be intercepted by filters and thus the severity and spatial range of external effects of land use change is under the influence of filter effects. Whereve...


Noordwijk, Meine vanPoulsen, J.G.Ericksen, Polly J.[Quantifying off-site effects of land use change: filters, flows and fallacies]Quantifying off-site effects of land use change: filters, flows and fallacies

This article discuss a search for a common understanding of three environmental problems linked to land use change in Southeast Asia: smoke pollution, degradation of biodiversity functions, and degradation of watershed functions. The objectives of this special issue are to identify usable data an...


Tomich, Thomas P.Chomitz, K.Francisco, H.Izac, N.A.Murdiyarso, DanielRatnere, B.D.Thomas, D.E.Noordwijk, Meine van[Policy analysis and environmental problems at different scales: asking the right questions]Policy analysis and environmental problems at different scales: asking the right questions

Land and water degradation due to on-site soil/nutrient loss and off-site pollution/sedimentation are serious environmental problems. Landscape planning and management tools are essential to implement best management practices targeted at locations where they are needed most. Although many soil/w...


Tamene, LulsegedBao Le QuangVlek, Paul L.G.[A landscape planning and management tool for land and water resources management: an example application in northern Ethiopia]A landscape planning and management tool for land and water resources management: an example application in northern Ethiopia

To meet the demand deficit in Kathmandu Valley, the Government of Nepal has planned to supply an additional 510 million liters per day (mld) of water by implementing the Melamchi Water Supply Project (MWSP) in the near future. In this study, we aim to assess the spatial distribution of groundwate...


Thapa, Bhesh Raj[Implications of the Melamchi water supply project for the Kathmandu Valley groundwater system]Implications of the Melamchi water supply project for the Kathmandu Valley groundwater system

Intensification of rainfed agriculture in the Ethiopian highlands has resulted in soil degradation and hardpan formation, which has reduced rooting depth, decreased deep percolation, and increased direct runoff and sediment transport. The main objective of this study was to assess the potential i...


Hussein, Misbah A.Muche, HabtamuSchmitter, PetraNakawuka, ProssieTilahun, Seifu A.Langan, SimonBarron, JennieSteenhuis, Tammo S.[Deep tillage improves degraded soils in the (sub) humid Ethiopian highlands]Deep tillage improves degraded soils in the (sub) humid Ethiopian highlands

In discussing the 1997 UN Watercourse Convention, McCaffrey (1998) gave a theoretical example of the late-developer problem. This paper complements that theoretical example with a real case study of the Zerafshan basin in Central Asia. While McCalliey addressed the water quantity issue in his exa...


Olsson, O.Wegerich, KaiKabilov, F.[Water quantity and quality in the Zerafshan River Basin: only an upstream riparian problem?]Water quantity and quality in the Zerafshan River Basin: only an upstream riparian problem?

El objetivo principal de este trabajo es el de examinar la consistencia de los resultados de una metodología participativa para evaluar la pobreza con las medidas de pobreza de carácter objetivo y con lo esperado para dos cuencas en Colombia, de acuerdo con sus características. Los resultados obt...


Peralta, AGarcía, J.A.Johnson, Nancy L.[Dinámica y definición de pobreza en los Andes colombianos : Enfoques participativos versus enfoques objetivos = Dynamics and definitions of poverty in the Colombian Andes: Participatory and objective approaches]Dinámica y definición de pobreza en los Andes colombianos : Enfoques participativos versus enfoques objetivos = Dynamics and definitions of poverty in the Colombian Andes: Participatory and objective approaches

Watersheds, especially in the developing world, are increasingly being managed for both environmental conservation and poverty alleviation. How complementary are these objectives? In the context of a watershed, the actual and potential linkages between land and water management and poverty are co...


Johnson, Nancy L.García, J.Rubiano Mejía, Jorge EliécerQuintero, MarcelaEstrada, R.D.Mwangi, E.Peralta, A.Granados, S.[Water and poverty in two Colombian watersheds]Water and poverty in two Colombian watersheds

The current study shows the process and the results of a methodology proposed to contribute with the issue of how to evaluate the adaptation to climate variability and future climate change. The proposed methodology consists of a standard to evaluate farmer’s adaptation to climate variability, ma...


Benegas, L.Jiménez, F.Locatelli, BrunoFaustino, J.Campos, M.[A methodological proposal for the evaluation of farmer’s adaptation to climate variability, mainly due to drought in watersheds in Central America]A methodological proposal for the evaluation of farmer’s adaptation to climate variability, mainly due to drought in watersheds in Central America

The assessment on key ecological factors affecting runoff and soil erosion and the usefulness of plot-level monitoring of soil erosion was conducted by collecting runoff and soil loss records from 14 runoff plots. The runoff plots were set up in two catchments in Central Kalimantan, Indonesia, wh...


Hartanto, H.Prabhu, R.Widayat, A.S.E.Asdak, C.[Factors affecting runoff and soil erosion: plot-level soil loss monitoring for assessing sustainability of forest management]Factors affecting runoff and soil erosion: plot-level soil loss monitoring for assessing sustainability of forest management

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