Showing papers by "G. Arturo Sánchez-Azofeifa published in 2003"
TL;DR: In this article, the authors quantified deforestation and secondary growth trends within and around protected areas between 1960 and 1997, and found that inside of national parks and biological reserves, deforestation rates were negligible and outside of National Parks and Biological reserves, there is a net forest gain for the 1987/1997 time period.
255 citations
TL;DR: In this article, a method is presented to identify local areas of high rates of deforestation within larger areas, using remote sensing and geographic information systems (GIS), and these deforestation hot spots are identified using a local analysis approach, considering for every location only land cover changes taking place in the immediate vicinity, and they thus reflect local deforestation.
34 citations
01 Jan 2003
TL;DR: In this article, the authors present a monitoring system for land use and land cover change (LUCC) to support the implementation of sustainable development policies, for example, what constitutes an appropriate data collection approach for the purposes of forest cover classification.
Abstract: Researchers and practitioners in the land use and land cover change (LUCC) community are often confronted with the need to prepare field expeditions to acquire data necessary to calibrate and validate processes associated with mapping areas/regions. As LUCC becomes more important for strategies aimed at planning for sustainable development, information related to the biophysical condition of the earth’s surface (land cover) and the purpose for which the land is being used (land use) are critical for the correct interpretation of land surface observations obtained from airborne and space borne instruments. In the process of defining a monitoring system for LUCC to support the implementation of sustainable development policies, several questions, must be addressed, for example, what constitutes an appropriate data collection approach for the purposes of forest cover classification? What is the relative importance of canopy understorey information? How can direct ground observations be linked to observations from remote sensing platforms?
2 citations