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Library ResourceInformes e investigacionesDiciembre, 2007Eritrea
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Library ResourceArtículos de revistas y librosDiciembre, 2015Sudáfrica, Brasil, India, China, África austral
Acacia mearnsii De Wild (black wattle) is an important plantation species for tannin production and woodchip exports in South Africa and Brazil. This study provides an updated overview of the black wattle industries in both countries, including planted areas and land ownership, silviculture and management, bark extract production, woodchip exports, as well as key research and development issues. The current total planted area to black wattle is 110 000 ha in South Africa and c. 170 000 ha in Brazil. In both countries black wattle is mainly cultivated by farmers (c.
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Library ResourceArtículos de revistas y librosDiciembre, 2015Níger, Global
Whether aggravated agricultural drought in the Sahel is related to a changing climate (meteorological drought, i.e., deficit of rainfall or unfavourable rainfall distribution) or to land use and land degradation (soil-water drought, i.e., decreased water infilitration and water holding capacity) is a much-debated issue.
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Library Resource
Options for Improved Water Pricing
Informes e investigacionesArtículos de revistas y librosJunio, 2016Malí, ÁfricaLarge-scale agricultural land investments in Africa are often considered solely from the land perspective. Yet land, water and other natural resources are closely interlinked in agricultural production and in sustaining rural livelihoods. Such investments involving irrigation will potentially have implications for water availability and utilization by other users, making it imperative to regard water as an economic rather than a free good.
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Library ResourceArtículos de revistas y librosDiciembre, 2015Ghana
Policy-makers consider participatory reforestation and forest resource management to be the key to reducing the problems of deforestation and forest degradation. In this regard, the government of Ghana introduced a modified taungya system as a mechanism to restore degraded forest reserves under the National Forest Plantation Development Programme to allow landless farmers access to land for temporary crop production and secured tree tenure rights.
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Library ResourceArtículos de revistas y librosDiciembre, 2011Esuatini
This article describes the use of a Bayesian network (BN) for the classification of land cover from satellite imagery in northern Swaziland. The main objective of this work was to apply and evaluate the efficacy of a BN for land-cover classification using gap-filled and terrain-corrected Landsat 7 Enhanced Thematic Mapper Plus (ETM+) imagery acquired on 15 May 2007. The posterior probabilities (parameters) were estimated using the expectation-maximization (EM) and conjugate gradient descent (CGD) algorithms.
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Library ResourceDocumentos de política y resúmenesDiciembre, 2009Namibia
Land tenure in Namibia is regulated by a variety of Acts, some of which date back to as far as 1937, and some of which are
yet to be approved by Cabinet. This variety of Acts makes it difficult to evaluate the performance of land administration as a
whole, and the appropriateness of coercive instruments with regards to urban land tenure in particular. In this article we
evaluate how urban land tenure regularization practices are conducted in Namibia, and to compare new formal procedures,
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Library ResourceArtículos de revistas y librosDiciembre, 2012Ghana
Little research has been conducted on how differing spatial resolutions or classification techniques affect image-driven identification and categorization of slum neighborhoods in developing nations. This study assesses the correlation between satellite-derived land cover and census-derived socioeconomic variables in Accra, Ghana to determine whether the relationship between these variables is altered with a change in spatial resolution or scale.
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Library ResourceArtículos de revistas y librosDiciembre, 2012Botswana
Local and national public sector stakeholders are considered to be primary stakeholders and their knowledge and support for conservation initiatives of transfrontier parks are important for sustainable management of resources. Hence, it is critical to assess the attitudes and opinions of a major stakeholder group in order to establish partnerships between protected areas (PAs), adjacent communities and other management agencies.
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Library ResourceArtículos de revistas y librosDiciembre, 2012Etiopía
In Tigray, Ethiopia, land degradation is a dominant environmental problem and hence the regional government has undertaken restoration measures on degraded soils since 1991. The present study was aimed to assess the impact of land uses and soil management practices on soil properties, and consequently on soil quality of degraded soils. The catchments selected were Maileba and Gum Selassa, and land uses included cultivated (CL), grazing (GL), plantation (PA) and area exclosure (AE). Replicated soil samples were collected from topsoil and profiles of four land-use types in both catchments.
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