Response of rice cultivation to fluctuating sea level during the Mid-Holocene

查看全文 作　　者：ZHENG [1]YunFei;SUN [1]GuoPing;CHEN [1]XueGao

机构地区：[1]Zhejiang Provincial Institute of Cultural Relics and Archaeology,Hangzhou 310014,China

出　　处：《Chinese Science Bulletin》索引2012年第57卷第4期,共9页

基　　金：supported by Zhejiang Provincial Department of Finance;Zhejiang Provincial Department of Culture 摘　　要：Archaeological analysis of a section of ancient rice fields at Tianluoshan for diatoms, seeds and phytoliths has shown that the highest local sea level in eastern China during the Holocene appeared before 7.0 ka BP. Entering the Mid-Holocene, as seawater regressed, a vast wetland plain appeared in the coastal area, where farmers of the Neolithic Hemudu culture cultivated rice. However, there were still several sea-level fluctuations in the Mid-Holocene, of which the biggest were from 6.4 to 6.3 ka BP and from 4.6 to 2.1 ka BP. In addition, in the period dominated by wetland grass vegetation, 6.3 to 4.6 ka BP, smaller fluctuations appar- ently pushed the coastline back on to the land. Even though the sea-level rises associated with these shoreline transgressions did not have the intensity of the highest sea level period, there still would have been profound impacts on the lives and production activities of people living in the region. Archaeological evidence from ancient rice fields at Tianluoshan shows that larger sea-level rise events pushed seawater onto the land and inundated large areas of rice fields, whereas weaker sea-level rise events resulted in the intrusion of seawater along rivers, causing an increase in soil salinity and a decrease in rice yields. The impact of sea-level rise on rice cultivation caused changes in local diet. In regions where rice production fell, the prevalence of gathering and hunting rose. High sea levels in the early Holocene imply that the origin of rice cultivation in the eastern coastal plain is likely to have been in small nearby mountain basins. 关键词：海平面波动全新世中期水稻种植海平面上升海水入侵沼泽湿地考古证据水稻产量

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Response of rice cultivation to fluctuating sea level during the Mid-Holocene

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