Nation-Wide Forest Mapping and Timber Volume Estimation Using Landsat-5 TM Imagery

摘要

The project described was supported by the United Nations Industrial Development Organization (UNIDO). The main objective of this project was to obtain basic forest information for development, promotion, and utilization of alternative sources of energy based on the use of the country's natural resources. A methodology is described which used LANDSAT TM data as a first segment of a two-stage sampling plan designed to produce typical forest information for the plantations and to map forest areas in Uruguay. From this project it can be concluded that the total forest area is about 3 percent of the total land area in Uruguay. The plantation forest, which has high productivity of woods, is about 23.7 percent of total forested areas. The overall interpretation and mapping accuracies werer 90.6 andn 83.3 percent, respectively. The total stand timber volume of pine and eucalypt plantation was estimated at 3,539,418.15 cubic meters and 24,231,118.83 cubic meters, respectively. From all the results obtained the project would conclude that LANDSAT-5 TM imagery, at a scale of 1:100,000, served well as the primary source of data from forest area mapping and timber inventory over a nation-wide level.