کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9447956 1618285 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Desert vegetation and timing of solar radiation
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Desert vegetation and timing of solar radiation
چکیده انگلیسی
Timing and amount of solar radiation were examined as factors influencing the distribution of seven perennial plants on a small mountain located in the Chihuahuan Desert. Average direct beam solar radiation fluxes at differing times throughout the day and year were estimated with computer calculations. Principal components analysis was used to reduce the number of solar radiation parameters and include the maximum available information with a manageable number of variables. The remaining solar radiation parameters were compared to plant distributions using redundancy analysis and generalized additive models. Unimodal, bimodal, and monotonic responses were all found depending upon the species and solar radiation parameter. Niche separation at this location depends upon the timing as well as the amount of solar radiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 60, Issue 4, March 2005, Pages 697-707
نویسندگان
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