This work was supported by the National Natural Science Foundation of China(Grant No.40171095);the National Natural Science Foundation of Hebei Province(Grant No.402615);the Special Foundation for Preliminary Research of Key Research Project,Science and Technology Ministry of China(Grant No.2003CCA01800);the National Natural Foundation for the Famous Young(Grant No.49920205).
In order to investigate the indication of major pollen types to source plants, 39 surface pollen samples are collected from 39 plant communities. The results show that diversity of pollen assemblages presents in diffe...