Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 159.
  1. Library Resource
    Articles et Livres
    décembre, 2016
    Éthiopie

    The role of land registration in reducing rural poverty has been debated for several decades. This article analyses the impacts of land registration on land rentals, security of land tenure, disputes over land, use of credit facilities from formal financial institutions and gender access and control over land. Our findings are based on data collected between April and December 2011 in irrigation systems in three regional states of Ethiopia using in‐depth interviews and field surveys.

  2. Library Resource
    Articles et Livres
    décembre, 2008
    Thaïlande

    Thai national irrigation systems, serving a large number of small paddy farmers, require water users' organization for effective and sustainable joint management; however, water users' organizations (WUOs) presently cover only 27% of the total irrigation area. This three-year action research investigated the difficulties in organizing water users in the Khlong Thadi Weir System in southern Thailand by immersion into the socio-economic conditions of Muslim farmers in farm turnout No. 4 of the 1L-4R-LMC canal and the conventional on-farm irrigation development there.

  3. Library Resource
    Articles et Livres
    décembre, 2015

    Process controls on water, sediment, nutrient, and organic carbon exports from the landscape through runoff are not fully understood. This paper provides analyses from 446 sites worldwide to evaluate the impact of environmental factors (MAP and MAT: mean annual precipitation and temperature; CLAY and BD: soil clay content and bulk density; S: slope gradient; LU: land use) on annual exports (RC: runoff coefficients; SL: sediment loads; TOCL: organic carbon losses; TNL: nitrogen losses; TPL: phosphorus losses) from different spatial scales.

  4. Library Resource
    Articles et Livres
    décembre, 2014
    Inde

    In the present study, a semi‐distributed hydrological model soil and water assessment tool (SWAT) has been employed for the Ken basin of Central India to predict the water balance. The entire basin was divided into ten sub basins comprising 107 hydrological response units on the basis of unique slope, soil and land cover classes using SWAT model. Sensitivity analysis of SWAT model was performed to examine the critical input variables of the study area.

  5. Library Resource
    Articles et Livres
    décembre, 2009

    Most desertification research focuses on degradation assessments without putting sufficient emphasis on prevention and mitigation strategies, although the concept of sustainable land management (SLM) is increasingly being acknowledged. A variety of already applied conservation measures exist at the local level, but they are not adequately recognised, evaluated and shared, either by land users, technicians, researchers, or policy makers. Likewise, collaboration between research and implementation is often insufficient.

  6. Library Resource
    Articles et Livres
    décembre, 2016
    Éthiopie

    Soil quality (SQ) assessment from farmers' point of view can be used as a primary indicator for planning sustainable agriculture. Despite this fact, limited information is documented with regard to SQ indicators, for example weed species, crop types and management practices from farmers' knowledge perspectives. The aims of this study are to analyse factors that determine farmers' knowledge of SQ, identify SQ indicators of weed species and crop types across different SQ status and assess soil‐and‐crop management practices that maintain SQ in the Mai‐Negus catchment, northern Ethiopia.

  7. Library Resource
    Articles et Livres
    décembre, 2015
    Maroc, Afrique septentrionale

    Atriplex nummularia has been extensively planted in Northern Africa to combat desertification. However, few studies evaluated the effectiveness of these interventions. This study aimed at assessing the dynamic performance of a number of Atriplex plantations located in the Marrakech province in terms of multitemporal dry biomass production. Three SPOT 5 images (2004, 2008 and 2012) and field biomass measurements were integrated to quantify the dry biomass production dynamics of plantations established from 1996 to 2007. Different plant ages covered the whole plant life cycle curve.

  8. Library Resource
    Articles et Livres
    décembre, 2014
    Espagne

    Land use change as conversion pasture to forest produces several changes on hydrological cycle. In this paper, we analyse the effects on stream discharge of afforestation of a small watershed devoted to pasture using the HBV hydrological model. Streamflow data obtained over the first 10 years after planting were employed to evaluate the capacity of HBV model to simulate hydrological behaviour of catchment after afforestation. Obtained results indicate that the estimation of streamflow was accurate as reflected by statistics (R² = 0.90, NSC = 0.89 and PBIAS = 0.34).

  9. Library Resource
    Articles et Livres
    décembre, 2014
    Chine

    The aim of this study was to examine the influence of land cover changes on soil organic carbon (SOC) and soil total nitrogen (STN) in the Daqing Prefecture of China, where heavy industrialisation in the form of dense oil wells has impacted the environment. Time‐series presentations for the period 1978 to 2008 of remotely sensed data and soil survey data were used to assess the extent of the changes.

  10. Library Resource
    Articles et Livres
    décembre, 2016
    Kenya

    Rehabilitating degraded rangelands using enclosures offers various benefits to agro‐pastoral households. However, enclosure benefits cannot be generalized as there are variations across dryland ecosystems and societies. This study assessed the qualitative and quantitative benefits derived from rehabilitating degraded rangelands using private enclosures in Chepareria, West Pokot County, Kenya.

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