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Book (stand-alone)Trees, forests and land use in drylands: the first global assessment
Full report
2019Also available in:
No results found.Drylands cover 41 percent of the Earth's land surface. This publication presents the results of the first global assessment of trees, forests and land use in these lands. The assessment breaks new methodological ground: it relies on the visual interpreation of freely available satellite images, carried out by more than 200 experts in a series of regional workshops. Using a tool called Open Foris ollect Earth, developed by FAO in collaboration with Google, participants gathered and analysed information for mrore than 200 000 sample plots worldwide. For each region, the report summarizes the distribution of forests, other wooded land and other land uses including grasslands, croplands, built-up areas and barren land, across all drylands and by aridity zone. It also estimates tree canopy cover, shrub cover, forest type and presence of trees outside forest. Indicatng that the global drylands contain more than one-quarter of the world's forest area, and that trees are present on 31 percent of the world's dryland area, the report provides a baseline for future monitoring and will support countries in their efforts to identify appropriate investments for the restoration and sustainable management of drylands. -
DocumentFRA 2000 - Pan-tropical survey of forest cover changes 1980-2000 - Results and findings 2002
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No results found.The results from the FRA 2000 Remote Sensing Survey cover most of pan-tropical forests under a wide range of ecological conditions, from tropical rainforests to dry forests. Estimates were calculated at different levels: at sampling unit, stratum, sub-regional, regional, pan-tropical levels and at ecological zones level. The reliability of the estimates differs according to the study level. The survey was mainly designed for generating information with an acceptable statistical precision at the regional and pan-tropical levels. Estimates at the subregional level have a relatively low precision but give valuable indications on forest changes processes. -
Book (stand-alone)Assessment of drivers of deforestation and forest degradation in West Africa
Methodology and main findings
2025Also available in:
This report presents the methodology and main findings of an assessment conducted between 2015 and 2020 to identify the primary drivers of deforestation and forest degradation in West Africa. Developed under the project “Global Transformation of Forests for People and Climate,” this assessment supports regional forest governance by providing robust, participatory, and data-driven insights.Combining a systematic literature review with spatial analysis using high-resolution satellite imagery and open-source tools such as SEPAL and Collect Earth, the methodology enabled the identification of changes in land use and forest cover across 64 000 sample plots. National experts from West African countries contributed to the prioritization and interpretation of drivers, ensuring local relevance and ownership.The results reveal that small-scale agriculture, logging, and fire are the predominant drivers of forest change, often occurring in combination within the same plot. These findings highlight the complexity of deforestation and degradation processes and underscore the need for integrated responses. The study also maps the spatial distribution of drivers across countries and provides recommendations for national adaptation of the methodology, policy integration, and community engagement.This assessment offers a replicable framework for understanding forest loss in West Africa and sets the stage for more targeted, science-based forest monitoring and management at both national and regional levels.
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