Acta Anthropologica Sinica ›› 2024, Vol. 43 ›› Issue (01): 19-39.doi: 10.16359/j.1000-3193/AAS.2023.0076

• Research Articles • Previous Articles     Next Articles

Human adaptive behaviors during the Middle Pleistocene Climatic Transition in the Nihewan Basin

PEI Shuwen1(), XU Zhe1,2, YE Zhi1,2, MA Dongdong1,3, JIA Zhenxiu4   

  1. 1. Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044
    2. University of Chinese Academy of Sciences, Beijing 100049
    3. Instituto de Historia, CSIC. Albasanz 26-28. 28037 Madrid, Spain
    4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101
  • Received:2023-06-28 Online:2024-02-15 Published:2024-02-06

Abstract:

The relationship between hominin evolution, technological developments, and environmental change has always been at the frontier of academic attention. The mid-Pleistocene Climate Transition (MPT) where the cycle, frequency and amplitude of climate change alters, occurred between 1.25 and 0.7 MaBP. This critical period promoted an initial migration wave of Homo erectus (Out of Africa I) and accelerated the spread of Homo erectus(equipped with Acheulean technology) to Eurasia from Africa. According to recent studies, the spread of Homo erectus taking Oldowan toolkits to middle/high latitudes of East Asia can be traced back to 2.12 MaBP. Around 1.66 MaBP, humans occupied the Nihewan Basin, leaving behind abundant and dense Paleolithic archaeological sites showing clear diverse and flexible adaptive behavioral characteristics. This paper presents a preliminary study between environmental change and human survival behaviors of several important sites (Feiliang, Madigou, Cenjiawan, and Dongutuo, etc.) during the MPT from the Cenjiawan platform in the eastern part of the Nihewan Basin.

Raw material procurement and exploration strategies indicate that local materials were adopted by early humans in the Cenjiawan platform. Exploration of different raw materials from sites depended on the distance from the raw material source instead of being directly influenced by environmental fluctuations. Freehand direct hard hammer percussion was the dominant technique especially during the MPT period. Although bipolar knapping was adopted by early humans, it had a complementary role that showed flexibility in knapping skills and enhancement of cognitive abilities of early humans to overcome constraints imposed by different qualities of raw materials. Attribute analysis of cores and flakes showed that core reduction and flaking procedures improved during the MPT period. The high quality of chert was selected as the most favorable raw material for stone knapping in the Nihewan Basin. Not only the number of tool types increased and the degree of retouch methods diversified, but complexity of various types of small scrapers, points, bores, notches, denticulates and multi-edged small tools increased significantly over time. In addition, evidence of core rotation and bifacial working of small clasts across some of the Nihewan assemblages like the Madigou knappers indicate that hominins had the ability to fashion bifacial implements and potentially LCTs. It can be deduced that increased environmental fluctuation and paleoecological variability during the MPT may have contributed to technological flexibility and diversification in response to new climatic challenges.

This paper provides new insights into the understanding of human behavioral adaptation that corresponded with environmental fluctuations from African to high-latitude arid-semi-arid regions in East Asia.

Key words: Nihewan Basin, Mid-Pleistocene, Climate transition, Human adaptive behavior, Environmental fluctuation

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