Total Vegetation 1973
收藏DataONE2016-10-29 更新2024-06-26 收录
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资源简介：
The coverage contains 1973 vegetation polygons representing GCES monitoring sites. These data were developed as study by Dr. G. Waring Northern AZ. University of current and historical riparian vegetation trends in the Grand Canyon. These data were delineated from historical photography (enlarged to 1:2400 scale) flown on June 16 1973. The flow of the Colorado River during acquisition was 2,700 to 14,000 CFS. These data were further edited by J. B. Sankey to only include polygons mapped by G. Waring with > 60 % vegetation canopy cover.
创建时间：
2016-12-01
