Rice domestication and climatic change: phytolith evidence from East China |
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| Authors: | HOUYUAN LU ZHENXIA LIU NAIQIN WU SERGE BERNÉ YOSHIKI SAITO BAOZHU LIU LUO WANG |
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| Institution: | (e-mail: ), Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;French Oceanographic Institute, IFREMER, BP 70, FR-29280 Plouzane, France;Geological Survey of Japan, AIST, Central 7, Higashi 1-1-1, Tsukuba, Ibaraki, 305–8567, Japan;Coastal Studies Institute, Louisiana State University, Baton Rouge, LA 70803, USA;Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Fossil rice phytoliths have been identified from a lateglacial to Holocene sequence of epicontinental sediments in the East China Sea that were probably transported by the Yangtze River from its middle and/or lower reaches. The rice phytoliths occurred first in the sequence at about 13900 cal. yr BP and disappeared during the period of 13000-10000 cal. yr BP, implying the earliest domesticated cereal crops of the world ever reported. Based on the records of phytoliths, pollen, diatoms and foraminifera from the sequence, the climate between 13000 and 10000 cal. yr BP was notably colder (Younger Dryas). The coincidence of disappearance of domesticated rice phytoliths with cold climate conditions may suggest a great climatic influence on human activities during that time. Warmer and wetter conditions during the period 13900 to 13000 cal. yr BP and after 10000 cal. yr BP have probably favoured rice domestication in the area. |
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