作者: R. H. Whittaker , W. A. Niering
DOI: 10.2307/1934875
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摘要: Vegetation of the southwest slope Santa Catalina Mountains southeastern Arizona was sampled and transects prepared for 1,000—ft (305 m) elevation belts on granite gneiss soils from summit forests (2,440—2,750 to base mountains (900 m). Transects also represented subalpine above 2,750 m in Pinaleno Mts. vegetation valley plain or bajada below mountains, samples were taken volcanic 900 Tucson Principal community—types high elevations low are: forest (Picca engelmanni Abies lasiocarpa), montane fir (Abies concolor, Pseudotsuga menziesii), pine (Pinus ponderosa, P. strobiformis), pine—oak (P. Quercus hypoleucoides), woodlands chihuahuana, Q. hypoleucoides, arizonica), pygmy conifer—oak scrub cembroides, Juniperus deppeana, arizonica, emoryi, Arctostaphylos pringlei, A. pungens, monocot shrubs), open...