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Showing items 1 through 6 of 6.Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used. This bulletin presents a state-of-the-art overview of nutrient-balance studies.
Invasive tree species are now considered to be a threat to the biological diversity of Southern Africa. Most of the invasive tree species in Southern Africa were either deliberate or accidental introductions. Most of the invasive tree species are exotic, with only one or two being indigenous.
This report summarizes the findings of the e-mail conference that took place from 9 October to 4 November 2002 and which was organized by the Land Degradation Assessment in Drylands project (LADA).
Forests play major roles in climate change. They contribute carbon emissions when destroyed or degraded and they suffer from changing climate, drought and extreme weather.
La définitio n de mécanismes app ropriés à la lu tte contre les activités illé gales et la corruption dans le sec t eur forestier dev rait constituer un des fondements des réformes législativ es entreprises par une majorité de pays africains.