Community Research and Development Information Service - CORDIS


Monitering of forest has become a necessity for most tropical countries due to the rapid depletion of their forest resources. The need for continuous global forest monitoring has become more obvious in the context of the potential impact of tropical deforestation on the carbon cycle, on climate change and on the loss of bio-diversity. Although not all information required for forest monitoring can be obtained by means of remote sensing, the role of the latter for continuous monitoring of large areas is unquestioned. However, the regular observation of whole continents is usually confined to the use of coarse resolution satellite images due to cost and time limitations.
The TREES projects has made efforts to contribute to the global assessment of tropical forestcover.During its first phase TREES demonstrated the feasibility of a global forest cover monitoring system based on 1km-resolution satellite images from NOAA AVHRR, displaying the potential but also the limitations of mapping broad forest cover types and of estimating forest area at regional scales.
TREES II * activities focus on the assessment of forest cover change. The change assessment will be based on a sample of high-resolution satellite images, following a prior stratification of forest cover into areas of rapid change and areas where no major changes are expected. Procedures for the identification of such deforestation ' Hot spots' by means of remote sensing gathering information from a group of regional experts. Further attention will be given to the integration of medium resolution satellite images for an improved assessment of forest cover and forest fragmentation. For areas of persistent cloud cover and for specific forest cover conditions the evaluation of radar images is being carried out. .

Additional information

Authors: STIBIG H J, Space Applications Institute, Global Vegetation Monitoring, Ispra (IT);ACHARD F, Space Applications Institute, Global Vegetation Monitoring, Ispra (IT)
Bibliographic Reference: Paper presented: Data Management and Modelling Using Remote Sensing and GIS for Tropical Forest land Inventory, Jakarta (ID), October 26-29, 1998
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, 1-21020 Ispra (IT)
Record Number: 199910256 / Last updated on: 1999-03-12
Original language: en
Available languages: en