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polyphagia n.1.【醫學】多食癥;貪食。2.【動物;動物學】雜食性...

polyphase

The great bustard is polyphagia bird , but it feeds mainly on plants . the feeding field habitat selection relate with that whether the grassland burn or not last year . the important factors that determine the feeding field selection are the plant species , vegetative cover score . density hemerrocallis minor and the density of pedacularis sp . on burning grasslandsjthe density of vegetation . insects quanlity . plant species richness and the height of plant are the main factors that determine the feeding field selection on unburning grasslands 大鴇是雜食性鳥類,但以植物性食物為主。對于取食地的選擇往往跟草原上一年是否被火燒過有關。在火燒地,植物種類數、植被蓋度、小黃花菜密度和蒿密度是取食地選擇的重要因素;在非火燒地,植被密度、昆蟲數量、植物物種豐富度及植物高度在大鴇取食地選擇中發揮重要作用。