| 1 | Evolution of prehistoric agriculture in central Gansu Province,China:A case study in Qin'an and Li County显示文摘This study,based on environmental archaeological studies focused on Qin'an County and Li County in Gansu Province,China,shows that during 8-7.3 ka BP few cultivated crop seeds were found.After 6.4 ka BP,during the Banpo period,many crop seeds appeared,indicating the development of agriculture.Millet agriculture in this area appeared and flourished a little later than in the Central Plain of China.Climate change is an important factor that influenced the development of agriculture in this area.The rapid expansion of agriculture during late Yangshao and Changshan benefited from the humid and warm climate in the mid-Holocene,especially the emergence of rice.After 4 ka BP,climate became drier,and agriculture began to decline.So Siwa Culture is characterized by pastoral economy,until the Eastern Zhou period,agriculture began to recover,when wheat and barley appeared in Li County,indicating diversification of agriculture of this time. | AN ChengBang JI DuXue CHEN FaHu DONG GuangHui WANG Hui DONG WeiMiao Zhao XueYe | 2010 | Chinese Science Bulletin2010，55，18： | 10 |
| 2 | Archaeological records of Dadiwan in the past 60 ka and the origin of millet agriculture显示文摘This paper reports the recent excavation of Unit Dadiwan06 at the Dadiwan site in Qin’an County, Gansu.A 65 ka chronological framework is established for Dadiwan06 on the basis of absolute dating (AMS 14C and OSL), stratigraphy, climate change events and archaeology.Artifact distributions reveal patterns of human behavioral variation and adaptation over the past 60 ka, from primitive hunting and gathering to advanced hunting and gathering, to primitive Neolithic agriculture, and finally to advanced Neolithic agriculture. | ZHANG DongJu CHEN FaHu BETTINGER R L BARTON L JI DuXue MORGAN C WANG Hui CHENG XiaoZhong DONG GuangHui GUILDERSON T P ZHAO Hui | 2010 | Chinese Science Bulletin2010，55，16： | 6 |
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