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Book (stand-alone)FRA 2000 assessing state and change in global forest cover: 2000 and beyond 2000
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No results found.The United National Food and Agriculture Organisation (FAO), at the request of the member nations and the world community, regularly reports on status and trends in the world’s forest resources. This paper briefly describes the methods used in past surveys, describes the data and methods to be used to complete the 2000 Forest Resource Assessments, and proposes a follow-on continuous world forest survey system to enable FAO to provide the necessary information on a permanent basis. This paper is based on a background document and on the results of an Expert Advisory Meeting on FRA 2000 held in Rome, Italy on March 6-10, 2000. Keywords: Inventory, Assessment, Monitoring, Global, Satellite, Tropical -
Book (stand-alone)Field documentation of forest cover changes for the Global Forest Resources Assessment 2000 2000
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No results found.FAO, at the request of member nations and the world community, regularly monitors the world’s forests through the Forest Resources Assessment Programme. The next report, the Global Forest Resources Assessment 2000 (FRA 2000), will review the forest situation by the end of the millennium. FRA 2000 will include country-level information based on existing forest inventory data, regional investigations of land-cover change processes, and a number of global studies focusing on the interaction between people and forests. The FRA 2000 report is made public at the end of the year. Findings will be distributed on the World Wide Web in the year 2000. One component of FRA 2000 is a survey of forest cover changes using satellite remote sensing. The survey is based on a pan-tropical sample of 117 Landsat TM images from three points in time during the period 1980-2000. The images are interpreted as to observable changes in the forest cover, and will provide objective estimates on a regional level. T his working paper documents both quantitatively and qualitatively three observed forest cover changes in the northeastern part of Thailand. The objectives and methodology of the RSS are described in detail in the Forest Resources Assessment Working Paper number eight. -
Book (stand-alone)FRA 2000 - Global forest cover mapping 2001
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No results found.Many countries periodically produce national reports on the state and change of forest resources, using statistical surveys and spatial mapping of remotely sensed data. At the global level, the Food and Agriculture Organization (FAO) of the United Nations has conducted a Forest Resources Assessment (FRA) program every 10 years since 1980, producing statistics and analysis that give a global synopsis of forest resources in the world. For the year 2000 of the FRA program (FRA2000), a global forest cover map was produced to provide spatial context to the extensive survey. The forest cover map, produced at the U.S. Geological Survey (USGS) EROS Data Center (EDC), has five classes: closed forest, open or fragmented forest, other wooded land, other land cover, and water. The first two forested classes at the global scale were delineated using combinations of temporal compositing, modified mixture analysis, geographic stratification, and other classification techniques. The remaining three FA O classes were derived primarily from the USGS global land cover characteristics database (Loveland et al. 1999). Validated on the basis of existing reference data sets, the map is estimated to be 77 percent accurate for the first four classes (no reference data were available for water), and 86 percent accurate for the forest and nonforest classification. The final map will be published as an insert to the FAO FRA2000 report, and the map data are available through the EDC web page.
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