Role of dynamic environmental change in sustaining the protracted process of rice domestication in the lower Yangtze River
Role of dynamic environmental change in sustaining the protracted process of rice domestication in the lower Yangtze River
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动态环境变化在维持长江下游水稻长期驯化过程中的作用
DOI：
10.1016/j.quascirev.2020.106456
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发表时间：
2020-08-15
影响因子：
4
通讯作者：
Huan, Xiujia
中科院分区：
文献类型：
--
作者：
He, Keyang;Lu, Houyuan;Huan, Xiujia
最近考古植物学和遗传学证据的增加提供了对农业起源和植物驯化的洞察，这表明一个耗时数千年的漫长过程始于10,000个BP或更新世晚期。与西南亚和中美洲全新世早期完成的谷物驯化相比，中国将水稻驯化推迟到全新世中期的原因尚不清楚。通过对河姆渡遗址高分辨率HMD1602岩心的沉积相和植硅体分析，揭示了环境变化对水稻驯化的动态影响。首次在该遗址的浅海沉积物下发现了水稻植硅体，将瑶江流域的人类活动历史和水稻驯化过程推后到8200-7600 ka a BP。河姆渡遗址水稻驯化过程在7600~7100年间出现明显的间断，受海侵和古台风事件的影响较大。此外，古环境和考古植物学记录的综合表明，水稻的开发和驯化分别在13,000-10000,7900-7400和6400-5600年BP期间中断了三次。第一次水稻开发的中断是由年轻的仙女座引起的，在西南亚和中国引发了大约10,000卡a BP的种植，而第二次水稻驯化的中断是由海洋入侵造成的，这推迟了只驯化水稻的时间。因此，水稻驯化的完成推迟到全新世中期，是气候环境不稳定和海平面波动的结果，最终导致水稻驯化过程的不连续。(C)2020爱思唯尔有限公司。保留所有权利。
Recent increases in archaeobotanical and genetic evidence offer insights into agricultural origins and plant domestication, which suggest a protracted process taking thousands of years that began by 10,000 cal a BP or in the late Pleistocene. Compared to the cereal domestication that was accomplished in the early Holocene in Southwest Asia and Mesoamerica, the reasons for the delay in rice domestication in China until the middle Holocene remain unclear. In the present study, the dynamic influence of environmental change on rice domestication was revealed by evidence from sedimentary facies and phytolith analysis of the high-resolution HMD1602 core from the Hemudu site. Rice phytoliths were recovered from beneath the neritic sediment at this site for the first time, which pushes the history of human activities and the process of rice domestication in the Yaojiang Valley back to 8200-7600 cal a BP. The process of rice domestication at the Hemudu site developed discontinuously with an obvious interruption during 7600-7100 cal a BP, which was significantly influenced by marine transgression and palaeo-typhoon events. Furthermore, synthesis of palaeoenvironmental and archaeobotanical records suggests that rice exploitation and domestication was interrupted three times during 13,000-10000, 7900-7400 and 6400-5600 cal a BP, respectively. The first interruption of rice exploitation was induced by the Younger Dryas, which triggered the onset of cultivation at approximately 10,000 cal a BP in Southwest Asia and China, while the second two interruptions of rice domestication were caused by marine transgressions, which postponed the domestication of only rice. Therefore, the delayed accomplishment of rice domestication until the middle Holocene resulted from an unstable climatic environment and sea-level fluctuations, which ultimately led to the discontinuous process of rice domestication. (C) 2020 Elsevier Ltd. All rights reserved.