{'fraction_non_alphanumeric': 0.039112050739957716, 'fraction_numerical': 0.013742071881606765, 'mean_word_length': 4.380681818181818, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Palaeoclimate and Palaeoenvironment of the Xiachuan Site

The Fuyihegeliang 富益河圪梁 profile, about 2.6 meters in depth, is a typical profile of the Xia­ chuan 下川 Site. A total of 15 soil samples have been collected from the profile for the pollen study. A number of pollen grains and spores was found from the samples, which represent 64 plant taxa. According to 14C dates, the profile belongs to the Last Glaciation. Climatic classification and pollen zonation of the Glaciation can be operated by three steps, i.e., zones, subzones, and minizones. The minizones only have regional and temporary sense. Zone I, Zone II and Zone III are corresponding to the Early, Middle and Late sub-stages of the Last Glacial stage and the 4, 3 and 2 of the deep sea oxygen isotope stages. Zone II2, Zone II3, Zone IIIa, and Zone IIIb can be well correlated with the stadials (s) and interstadial (i) in North China, such as Ashihe 阿什河 (s), Shangentun 山 根 屯 (i),