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IssuesenvironnementLandLibrary Resource
There are 6, 186 content items of different types and languages related to environnement on the Land Portal.

environnement

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Genetic considerations in ecosystem restoration using native tree species. State of the World’s Forest Genetic Resources – Thematic Study.

Journal Articles & Books
Décembre, 2014

There is renewed interest in the use of native tree species in ecosystem restoration for their biodiversity benefits. Growing native tree species in production systems (e.g. plantation forests and subsistence agriculture) can also ensure landscape functionality and support for human livelihoods. Achieving these full benefits requires consideration of genetic aspects that are often neglected, such as suitability of germplasm to the site, quality and quantity of the genetic pool used and regeneration potential.

Future socioeconomic changes

Reports & Research
Février, 2013
Afrique
Afrique orientale

Development of socio-economic scenarios and translating them into suitable storylines and provide an overview of potential data to be used for a quantification of future disease vulnerabilities

Evaluating fire severity in Sudanian ecosystems of Burkina Faso using Landsat 8 satellite images

Journal Articles & Books
Mars, 2017
Burkina Faso
Afrique
Afrique occidentale

The fire severity of the 2013–2014 fire season within Sudanian ecosystems in Burkina Faso was evaluated from Landsat 8 images using derivatives of the Normalized Burn Ratio algorithm (NBR). The relationship between the image-derived severity and the field observed severity i.e. Composite Burn Index (CBI) was best described by a nonlinear model of the form y = a + b*EXP(CBI *c) (R2 = 0.66). Classification of the image-derived burned area into burn severity classes achieved a classification Kappa accuracy statistic of 0.56.

Environmental issues and ILCA research agenda

Conference Papers & Reports
Décembre, 1993

As the only international centre that is solely concerned with African livestock, ILCA has a responsibility to play a lead role in defining the agenda of research issues related to livestock development and environmental policy in Africa. This paper presents a framework appropriate for defining that agenda and for guiding analysis of particular research issues and gives some detail on how ILCA might approach the specific area of range management policy in the arid and semi-arid areas.

Effect of grazing on plant attributes and hydrological properties in the sloping lands of the East African highlands

Journal Articles & Books
Décembre, 2002
Afrique
Afrique orientale

Extending livestock grazing to the steep slopes has led to unstable grazing systems in the East African Highlands, and new solutions and approaches are needed to ameliorate the current situation. This work was aimed at studying the effect of livestock grazing on plant attributes and hydrological properties. The study was conducted from 1996 to 2000 at the International Livestock Research Institute at Debre Ziet Research Station. Two sites were selected: one at 0-4% slope, and the other at 4-8% slope.