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中坝制盐遗址的孢粉分析与古植被、古环境   总被引:1,自引:0,他引:1  
考古证据表明,距今4000多年以前,重庆三峡地区的中坝遗址就开始了规模性的盐业生产.为了解盐业生产的环境背景及其影响,在中坝遗址厚达12.5m的文化堆积层进行了孢粉取样和分析.AMS 14C测年结果显示,这些样品分别来自新石器时代晚期(4420~3700aB.P.)、商至西周(3550~2700aB.P.)和东周(27...  相似文献   
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In this paper, the spatial and temporal distribution of the settlement sites of six periods from the Neolithic Age to the Shang and Zhou dynasties in northern Shandong was investigated using the ArcGIS program, and the relationship between settlement distribution and environmental changes was discussed, based on the proxy records of climatic and environmental change contained in the sediments from three sections at the Shuangwangcheng site and the previous work. The results show that the climate was warm and humid and the sea level was relatively high during the period of 8000-5000 a BP in the study area, and the ancient people lived in the relatively flat (slope of 〈2°) areas at high elevation (20-300 m above sea level), such as diluvial tableland and alluvial plain. On the other hand, few archaeological sites in the low-lying plain in the west of the study area indicate that few people lived there during that period. This might be attributed to frequent flooding in the area. After 5000 years ago, the scope of human activity extended to the area close to the sea because the relatively colder and drier climate results in sea-level fall, meanwhile the low-lying plain in the west was occupied by the ancient people. The study area of this period was characterized by the rapid development of prehistoric culture, the intensified social stratification and the emergence of early city-states. However, around 4000 a BP, the abrupt change in climate and the increase in frequency and intensity of floods severely disrupted human activities, and eventually led to the decline of the Yueshi culture. During the Shang and Zhou dynasties, the climatic conditions gradually stabilized in a mild-dry state, which promoted the redevelopment and flourish of the Bronze Culture. The previous situation, which was characteristic of sparse human settlements due to freshwater shortage and unfitted conditions for sedentary agriculture, changed during the Shang and Zhou dynasties in northern coastal wetlands.Local residents effectively adapted themselves to the tough environmental conditions by producing sea-salt, which led to the rapid growth of human activities.  相似文献   
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华北不同地区全新世环境演变对古文化发展的影响   总被引:8,自引:17,他引:8       下载免费PDF全文
辽西牛河梁、内蒙古中南部庙子沟和甘肃秦安大地湾是中国北方的3个重要新石器文化遗址.本文利用孢粉、黏土矿物等古气候指标对3个遗址所在地区的全新世气候变化进行了研究,并结合这些地区的地理位置和地质地形条件等特征,分析和探讨了这些地区的自然条件和全新世环境演变及其与古文化发展的关系,阐明了不同地点的环境及其演变的共性和差异以及对古文化发展的影响.  相似文献   
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以无定河流域的数字高程模型为主要研究对象,利用地理信息系统软件进行空间分析,与陕西北部无定河流域龙山时期遗址的分布位置叠置和聚类分析,讨论聚落选址与地貌类型、距河流水平距离、河网等级等6个地形地貌因子之间的关系。结果发现,全新世中期无定河流域人类在聚落选址时,对水文条件、地貌和地面坡度条件有较强的倾向性,而对地面朝向无明显倾向性。选址时选择地形地貌影响因子的优先顺序为:地貌类型、遗址距河流距离、遗址处地面坡度、遗址处河流等级、遗址处地面朝向。  相似文献   
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本文对辽宁凌源市红山文化牛河梁遗址区的地形进行了考察,对建筑石料进行了鉴定,证明当时人类对地形和岩性的认识和利用已具有较高水平。对遗址文化层的动植物残体分析、孢粉分析及附近大凌河上游全新世沉积剖面的孢粉分析基础上,对牛河梁遗址形成的环境背景和红山文化晚期繁荣的原因及人地关系问题进行了分析探讨。  相似文献   
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山东北部地区聚落遗址时空分布与环境演变的关系   总被引:4,自引:1,他引:3  
利用GIS软件对山东北部地区聚落遗址时空分布特征进行分析,并结合双王城剖面沉积环境分析和前人研究成果探讨了聚落时空分布与环境演变之间的关系。结果表明:距今8000-5000 年间,在气候温暖湿润和海面相对较高的环境背景下,人类活动主要集中在海拔相对较高(20~200 m),地形较为平坦(坡度< 2°)的洪积台地和冲积平原上;西部平原地区由于地势低洼,容易积水而发生水患,因而很少有遗址分布。距今5000 年之后,气候暖湿程度降低,海平面持续下降,人类活动范围明显向海扩展;西部低洼地区在气候变干和海面降低的双重影响下,自然环境得到改善,也开始被古人广泛开发利用。这一时期区域文化繁荣发展,逐渐形成社会结构复杂、城邦林立的初期文明。然而距今4000 年左右,由于气候变化和洪患灾害加剧,史前文化开始明显衰落。商周时期气候环境趋于稳定,文化发展再次兴盛。北部滨海平原地区随着生产技术的进步,人类适应区域资源环境条件,在早期农业人群难以定居的滩涂地上形成以盐业生产为主要经济活动的聚落群。  相似文献   
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