Detection of vegetation change using reconnaissance imagery

Vegetation occurs at its highest elevations on equatorial mountains. inspec tion of archival and recent high-resolution reconnaissance imagery of tropi cal mountains shows, in all cases, features indicating an increase in the e levation of mountain vegetation zones and an increase in vigour in the high -elevation vegetation. These changes are consistent with an increased plant performance from increased levels of carbon dioxide in the atmosphere as w ell as with a warmer or more favourable climate.