长江中下游地区新石器文化时期的植被、环境和人类活动特征研究

稻作文化 植被环境 新石器 人地关系 长江中下游
舒军武 2014-01 项目
Holocene environmental changes consist of natural variability and human activities. In the context of the current global warming, the human-nature relationship becomes a hot topic in the global change researches due to worldwide concerns for our environment deterioration. The middle and lower reaches of the Yangtze River in China is an ideal area to investigate the human-nature relationship because it is located in the typical Asian monsoon realm sensitive to climate change and it is a key place where Neolithic rice cultures originated and developed. This study use well- dated fine lake sediments from Lake Dongting, Lake Poyang, etc. for high-resolution pollen, phytolith, and charcoal analyses in order to reconstruct and interpret vegetation history, fire regime and climate changes. Furthermore, we focus on the two centers of Neolithic rice-dominated cultures, that is, Liyang Plain in Human Pronvince and Puyang River drainage in Zhejiang Pronvince,to make pollen, phytolich and charcoal analyses for representative and less-disturbed archaeological profiles. Key indicators of human impact will be used to discuss anthropogenic influence on vegetation and environment. Emphasis will be laid on to reveal the detailed process of human activities and to discern the different response of vegetation disturbance and environment change to changing rice practices from the slash-and-burn to plough cultivation. We will make comparison of environment variation in its relation to rice agricultures to discuss the spatial-temporal changes of the human-nature relationship in the middle and lower reaches of the Yangtze River and their driving mechanisms. Our research will contribute to understanding the prehistoric human-nature relationship and to predicating the future environment change in the study area.
全新世环境变化受自然变化和人类活动共同作用和影响,在当今全球变暖背景下,关注人类生存环境,探讨两者相互关系是目前全球变化研究紧迫的热点科学问题。我国长江中下游地区地处典型东亚季风环境变化敏感区,又是新石器稻作文化起源和发展的核心区,是研究人地关系的理想区域。本研究择选洞庭湖、鄱阳湖等高质量钻孔岩芯,结合高精度的年代标尺,通过孢粉、植硅体、炭屑等代用指标的高分辨率综合分析,重建和解译全新世植被史、火活动及气候环境序列;同时,围绕长江中游湖南澧阳平原和下游浙江浦阳江流域两大新石器文化中心,基于典型遗址点边缘剖面记录的人类活动信息,着重揭示人类活动细节过程和刀耕火种到犁耕等不同稻作农作阶段对植被及环境的影响特征;综合对比长江中下游两地环境演变与稻作农业活动特点的异同,探讨两者相互作用的时空变化及其规律和机理。本项目对深入认识史前人地关系和未来环境变化预测具有重要的学术价值和现实意义。