Pollen evidence to interpret the history of rice farming at the Hemudu site on the Ningshao coast, eastern China
Pollen evidence to interpret the history of rice farming at the Hemudu site on the Ningshao coast, eastern China
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DOI：
10.1016/j.quaint.2016.05.016
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发表时间：
2016-12
影响因子：
2.2
通讯作者：
Y. Liu;Qianli Sun;D. Fan;Xiaohe Lai;Lichen Xu;B. Finlayson;Zhongyuan Chen
中科院分区：
文献类型：
--
作者：
Y. Liu;Qianli Sun;D. Fan;Xiaohe Lai;Lichen Xu;B. Finlayson;Zhongyuan Chen
在河姆渡考古遗址附近采集了一个3.12米长的沉积物柱状样，名为HMD，以解码该遗址自全新世中期以来的水稻种植历史及其与环境变化的关系。微体化石结果与岩心岩性表明，早在6500年前，河姆渡人就定居在潮坪上，这是一个微咸的沉积。淡化环境表明丰富的水生草本植物和下降甲藻atca.6500-6200卡年BP有利于人类的职业和水稻种植协助清除和射击。随后松花粉和蕨类孢子显著增加，表明在较冷的气候环境下可能会加强河流作用，这可能限制了祖先的生活空间，并削弱了该地点的水稻种植活动。水稻种植返回约。5500 -5200 cal yr BP与改善的气候和适宜的沿海环境，证明了增加禾本科花粉，木炭仍然和出现更多的网站在晚期河姆渡文化阶段。从5200 cal yr BP，蕨类孢子和淡水藻类增加，这意味着扩大水体可能与姚江的迁移，使河姆渡网站不再有利于人类居住。
A 3.12-m sediment core named HMD was retrieved near the Hemudu archaeological site to decode the rice farming history and its connection to the environment change at the site since mid-Holocene. Microfossil results together with core lithology indicated a brackish supra-tidal flat deposition prior toca.6500 years ago, on which the Hemudu people settled. A desalinized environment indicated by abundant aquatic herbs and declined dinoflagellate atca.6500–6200 cal yr BP would have favored human occupation and rice farming assisted by clearing and firing. This then followed by a significant increase ofPinuspollen and fern spores, suggesting enhanced fluvial processes possibly under a cooler climate setting, which might have constrained the living space for the ancestors and weakened the rice farming activities at the site. Rice farming returned atca.5500–5200 cal yr BP with an ameliorated climate and suitable coastal environment as evidenced by increases of Poaceae pollen, charcoal remains and the emergence of more sites at the late Hemudu Culture stage. Fromca.5200 cal yr BP, fern spores and freshwater algae increased, implying an expanded waterbody probably associated with the migration of the Yaojiang River that made the Hemudu site no longer favorable for human occupation.