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Hydrological consequences of landscape fragmentation in mountainous northern Vietnam: evidence of accelerated overland flow generation
Measurements of saturated hydraulic conductivity (Ks) and indices of Horton overland flow (HOF) generation are used to assess the influence of landscape fragmentation on near-surface hydrologicExpand
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Sediment induced soil spatial variation in paddy fields of Northwest Vietnam
Abstract The aim of this study was to assess the impact of various sedimentation pathways (flooding, irrigation and runoff) on the spatial variability of soil fertility in rice paddy terraces inExpand
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Mitigation potential of soil conservation in maize cropping on steep slopes
Abstract Maize ( Zea mays ) cropping has greatly increased in Southeast Asia since the mid-1990s, mainly by expanding its production into steep forested uplands. This led to severe erosion, soilExpand
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Analysis of the sustainability within the composite swidden agroecosystem in northern Vietnam: 1. Partial nutrient balances and recovery times of upland fields
Abstract Composite swiddening is defined as an agroecosystem that integrates upland rotating crop/fallow plots and downstream permanent wet rice fields into a single household resource system.Expand
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Recognizing contemporary roles of swidden agriculture in transforming landscapes of southeast Asia.
Geography Department, AS2-04-21, 1 Arts Link, Kent Ridge. National University of Singapore117570, Singapore, emailgeoadz@nus.edu.sg†Program on Environment, East-West Center, 1601 East-West Road,Expand
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A Nutrient Balance Analysis of the Sustainability of a Composite Swiddening Agroecosystem in Vietnam's Northern Mountain Region
This paper reports some results of the first three years of an on-going research project on nutrient balances in a composite swidden agroecosystem. In a composite swiddening system, householdsExpand
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A turbidity-based method to continuously monitor sediment, carbon and nitrogen flows in mountainous watersheds
Summary The aim of this study was to develop a method to continuously monitor sediment, carbon and nitrogen concentrations in streams using turbidity sensors. Field experiments were conducted in anExpand
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Hydrological consequences of landscape fragmentation in mountainous northern Vietnam: Buffering of Hortonian overland flow
Summary We use a hydrology-based fragmentation index to explore the influence of land-cover distribution on the generation and buffering of Hortonian overland flow (HOF) in two disturbed uplandExpand
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Compound-specific δ13C isotopes and Bayesian inference for erosion estimates under different land use in Vietnam
Abstract Recent studies have pointed out the potential of the compound specific stable isotope (CSSI) technique based on long-chain fatty acids methylester (FAME) to identify hot spots of soilExpand
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Linking spatio-temporal variation of crop response with sediment deposition along paddy rice terraces
Abstract In tropical mountainous regions of South East Asia, intensive cultivation of annual crops on steep slopes makes the area prone to erosion resulting in decreasing soil fertility. SedimentExpand
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