Assertion: arboreal pollen | /r/HasProperty | betula
Facets:
value: mainly
type: DEGREE
Source sentences:
text: The results reveal that the pollen assemblages are dominated by arboreal pollen, which accounts for an average of 52% and mainly includes Pinus, deciduous Quercus, Carpinus, Betula, Nitraria, Castanea, and Ulmus.