Middle Holocene coastal environment and the rise of the Liangzhu City complex on the Yangtze delta, China
Middle Holocene coastal environment and the rise of the Liangzhu City complex on the Yangtze delta, China
复制标题
全新世中期海岸环境与长江三角洲良渚城市群的崛起
DOI：
10.1016/j.yqres.2015.10.001
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发表时间：
2015
影响因子：
2.3
通讯作者：
Zhongyuan Chen
中科院分区：
文献类型：
--
作者：
Yan Liu;Qianli Sun;Ian Thomas;Li Zhang;Brian Finlayson;Weiguo Zhang;Jing Chen;Zhongyuan Chen
大型史前城市良渚及其相关的土堤出现在长江三角洲海岸，经过两千年的居住在这一地区的分散社区。其发展的细节已在文献中广泛讨论。我们的研究结果表明，城市有选择地建在海湾的头部由山支持，接近食物，淡水和木材，并与沿海灾害的保护。放射性碳和光释光测年表明，该土堤形成于4.8- 4.5ka之间，土堤形成时间稍晚，约为4.1ka。在此期间，咸水湿地正在改变为淡水，以应对冰后期海平面上升稳定的快速海岸侵蚀。这促进了水稻种植，并通过精心的城市规划促进了城市的发展。较新的大型土堤和人工池塘可能表明对防洪和灌溉的需求日益增加。
The large prehistoric city of Liangzhu and its associated earthen dike emerged on the Yangtze delta-coast after two millennia of occupation in this area by scattered communities. Details of its development have been widely discussed in the literature. Our results reveal that the city was selectively built at the head of an embayment backed by hills, with close access to food, freshwater and timber, and with protection from coastal hazards. Radiocarbon and optically stimulated luminescence (OSL) dating shows that it was built around 4.8–4.5 ka, and the earthen dike was constructed a little later at ~ 4.1 ka. During this time, saltwater wetlands were changing to freshwater in response to rapid coastal progradation as the postglacial sea-level rise stabilized. This facilitated rice farming and furthered the development of the city with elaborate city planning. The younger large-scale earthen dike and artificial ponds possibly suggest increasing demand for flood mitigation and irrigation.