Changes in the concentrations of airborne Picea schrenkiana pollen in response to temperature changes in the Tianshan Mountain area Effects of Heavy Liquid Floating on the Calculation of Pollen Concentration Diurnal Variation of Tree Pollen Concentration and Its Relation to Microclimate Factors on Hard Ground Surface in Beijing Urban Area Airborne Pollen Grains of Burdur, Turkey The influence of urban surface condition on diurnal variation of tree pollen dispersal Predicting Yield of Castanea millissima with Pollen Concentration