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我国北方大部分地区,距今8000年前后的降温事件之后,才真正意味着人类的全新世气候适宜期的开始。距今5500年前后降温以及由此带来的干旱,使甘青地区这一时期人口与资源之间的矛盾的激化,甘青地区葫芦河流域仰韶文化中晚期出现的社会复杂性,可能是在资源紧张状态下的一种人类文化行为的生态调整。甘青地区距今4500年气候转变可能首先促进或刺激了齐家文化的发展。但随着气候转变的幅度增加,环境条件渐趋恶劣并超过了当时人类所能承受的极限,西北地区史前农业体系不可避免的发生彻底地解体和衰落。长期的干旱环境可能是导致齐家文化的衰落以及齐家文化之后较长时间农业文化的低潮的重要原因之一。
Most parts of northern China, dating back to about 8,000 years ago, after the cooling event, it really means that the climate of mankind Holocene began. The cooling of the 5500 years ago and the consequent drought have intensified the conflict between population and resources in Gansu and Gansu during the late Gansu-Yangshao culture. Ecological Adjustment of a Kind of Human Cultural Behavior under the Condition of Resource Tension. Gan Qing region from 4500 years ago climate change may be the first to promote or stimulate the development of Qi culture. However, with the increase of climate change, the environmental conditions become worse and worse than the limit that mankind can afford at that time. The prehistoric agricultural system in Northwest China will inevitably undergo a complete dissolution and decline. The long-term arid environment may be one of the important reasons leading to the decline of Qijia culture and the downturn of agricultural culture after Qijia culture for a long time.