In many regions of the world, soil erosion is one of the main land degradations processes that reduce the soil productivity by removing fertile topsoil layers, thus decreasing levels of organic matter and the nutrients. Therefore erosion researches constitute an important part of the research on the soils. The erosion risk of soils can be evaluated directly carried out in the field, greenhouses or laboratory by means of some experiments or indirectly based on developing and applying models that gives risk expectations for large areas.
Résultats de la recherche
Showing items 1 through 9 of 1073.-
Library ResourceArticles et Livresdécembre, 2015
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Library ResourceArticles et Livresnovembre, 2016
This study focuses on land use in the tsunami inundation area caused by the Great East Japan Earthquake, particularly land use history in the tsunami-affected area. Hanagama District, Yamamoto City, Miyagi prefecture, was selected as the study area. Land use were examined using aerial photographs taken in 1975, 2010 and 2013. Relationships between land use change and the disaster hazard areas, natural land conditions were analyzed with GIS.
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Library ResourceArticles et Livresdécembre, 2008
The degradation of soils with high sand content, in the southwest of the state of Rio Grande do Sul, is due to the vegetal cover withdrawal, forming sandy areas called "areais", which pose a risk to animal husbandry and the prairie ecosystem. A technique of revegetation with cover crops such as Avena strigosa Schieb. and Lupinus albescens H. et Arn., was developed to reduce the soil particle movement by eolic erosion.
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Library ResourceArticles et Livresdécembre, 2016
Context: Various species of forest trees are commonly used for ornamental purposes and are therefore frequently found in nonforest ecosystems. They constitute an important component of the so-called trees outside forests (TOF).
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Library ResourceArticles et Livresdécembre, 2016Serbie
Important hydrological changes, or generally water resources changes, are being observed in Serbia, as well as in many other parts of the world. Many national and international projects and studies address climate change and its impact on water resources. Some focus solely on the impact of climate change, while others also assess the impact of land use changes and/or changes in human use of water.
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Library ResourceDocuments de politique et mémoiresjuin, 2012
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Library ResourceArticles et Livresmars, 2017
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Library ResourceArticles et Livresdécembre, 2013
Poplars and willows provide society with ecosystem services. These include direct economic benefits such as wood, fibre, fuelwood and other forest products. They also include environmental benefits improving the lives of people, such as through rehabilitation of degraded land, restoration of forest landscapes and mitigation of climate change. All of these services support rural livelihoods, enhance food security, alleviate poverty and contribute to sustainable land use and rural development, particularly in developing countries.
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Library ResourceArticles et Livresdécembre, 2013
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Library ResourceArticles et Livresdécembre, 2016Sri Lanka
The island of Sri Lanka is free from serious natural hazards such as volcanic activity and earthquakes resulting from climatic extremes, but there are impacts of many natural disasters, such as landslides, floods and droughts, the intensity and frequency of which are increasing due to human interventions. Some areas of Sri Lanka are also periodically subject to cyclones that occur due to climatic conditions and geographical locations. Land degradation denotes all natural or anthropogenic processes that diminish or impair productivity of land.
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