Pollen Flux and Surface Soil Pollen Assemblages in East Part of the Yinshan Mountains, Earthern of China

• 1、College of Resources and Environment, Hebei Normal University

Abstract：A study on pollen flux and surface pollen assemblages from peak meadow, birch forest, Ostryopsis shrub, artificial pine forest and weeds grassland in Manhan and Daqing Mountains in the east part of Yinshan Mountains showed that the diversities of pollen flux and pollen content are obvious among different vegetation types, even among different sample sites in the same vegetation type. The Tauber trap sample has smaller pollen source area than surface soil sample and reflects surrounding vegetation well. The trap sample is easily influenced by anthophilous pollen and local plants pollen, which makes the trap sample cannot distinguish vegetation type well in Discriminant analysis. The cluster analysis results show that pollen assemblages between traps and surface samples are different. Pollen percentages of Pinus, Artemisia, Chenopodiaceae and Betula in surface samples are higher than that of Tauber trap samples, indicating these pollen taxa have strong ability of transportation and preservation. Gramineae pollen is a kind of under-representative pollen types and weak to be preserved. It is very important to pay great attention in interpreting fossil pollen.

Keywords： Pollen influx, surface pollen, Manhan Mountain, Daqing Mountain, east part of Yinshan Mountains