瓦店遗址地层记录的龙山晚期古环境与人类活动  

ENVIRONMENTAL AND ANTHROPOGENIC RECORDS OF LATE LONGSHAN PERIOD AT THE WADIAN SITE

作　　者：李中轩[1] 吴国玺[1] 孙艳丽[1] 张曼[1] 谷蕾[2] 

机构地区：[1]许昌学院城乡规划与园林学院,许昌461000 [2]河南大学环境规划学院,开封475001

出　　处：《海洋地质与第四纪地质》2017年第3期180-186,共7页Marine Geology & Quaternary Geology

基　　金：河南省高等学校重点研究项目(16A170011);国家自然科学基金项目(41541005)

摘　　要：龙山晚期是中华文明酝酿形成的关键时期,位于颍河上游的瓦店遗址文化层较完整地记录了这一时期的环境特征和人类活动。文章测定了瓦店遗址龙山文化晚期遗址地层沉积物的粒度、常量元素、磁化率和木炭屑密度等环境指标;结果表明,龙山晚期的下段地层(约4.2~4.1kaBP)的炭屑密度指标(M/F比值)处于高值区间、Cr/Cu值较低,Pb、Cu元素含量较高、粒度频率分布的细尾端为单峰曲线,表明该时期气候干旱但农业活动相对活跃,但地层沉积动力主要为洪积作用。龙山晚期的上段(约4.1~3.9kaBP)Cr/Cu值较高,Pb、Cu含量下降,炭屑的M/F值走低,沉积物频率曲线的细粒端出现双峰现象,表明地层形成时期为湿润气候,沉积动力多元化,遗址地貌发生了变迁,人类活动的强度较早期有明显减弱。The late Longshan period is a critical time for establishment of Chinese civilization. The archaeo- logical site of Wadian, situated by the upper Ying River in Yuzhou, is one of typical sites formed within this stage. And so the cultural layers contain relatively complete information on both paleo-environment and human activities. The authors measured grain sizes, metal element concentrations, magnetic susceptibility and charcoal density of the layered deposits at the Wadian site in order to construct the interaction between human and environment. Results show that both the M/F ratio of charcoal density and the concentrations of Pb and Cu are high, and the grain size distribution pattern is featured by a unimodal frequency curve at the fine end of the lower layer approximately 4. 1-3. 9kaBP, representing a dry climate and flourishing period of prehistoric farming. In the period from 4.1-3.9kaBP, Cr/Cu ratio goes up but M/F ratio, K, Ca, Cu contents drop down, indicating a wet climate and weak human activity. Some times, there are bimodal frequency curves, suggesting the contribution of eolian transportation.

关 键 词：瓦店遗址 新石器晚期 古环境 龙山文化 

分 类 号：P534.63[天文地球—第四纪地质学]