Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period

The relationship between the evolution of human societies and their living environments has been discussed intensively in recent decades. It is important to understand the patterns and mechanisms of human–environment interaction and evolution in order to cope with rapidly changing environments in th...

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Main Authors: Huihui Cao, Guanghui Dong
Format: Article
Language:English
Published: KeAi Communications Co. Ltd. 2020-09-01
Series:Regional Sustainability
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666660X20300086
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author Huihui Cao
Guanghui Dong
author_facet Huihui Cao
Guanghui Dong
author_sort Huihui Cao
collection DOAJ
description The relationship between the evolution of human societies and their living environments has been discussed intensively in recent decades. It is important to understand the patterns and mechanisms of human–environment interaction and evolution in order to cope with rapidly changing environments in the modern world. We reviewed the results of dating, archaeobotanical, and zooarchaeological studies from 139 prehistoric sites in the Northeast Tibetan Plateau (NETP) and contiguous regions (NETP-CR: i.e., the Hexi Corridor and western margin of the Chinese Loess Plateau) and compared them with paleoenvironmental records to study variations in spatiotemporal patterns of social development in the area and their relationships with climate and vegetation changes. Our results show that hunter-gatherer groups occupied vast areas of the NETP at low intensities during ~15,000–5500 BP (years before present). This was directly related to forest cover and climate change. An increase in temperature and precipitation turnover of vegetation from desert steppe to alpine meadow/subalpine shrub, and recovery of animal population on the Tibetan Plateau created more food resources and space for hunter-gatherers. Millet farmers settled extensively below 2500 ​m a.s.l. (meters above sea level) in the NETP-CR between ~5500 and 3600 BP, and might have coexisted with hunting groups above 2500 ​m a.s.l. via subsistence exchange. The distribution of human settlements during that period was affected by climate change, with the relatively warm and wet climate promoting the expansion of millet agriculture to the NETP-CR during 5500–4500 BP, while climate deterioration caused humans to retreat to lower altitudes. During 3600–2200 BP, a range of livelihoods emerged in different regions of the NETP-CR. This was promoted by early trans-Eurasian exchange and the development of an agro-pastoral economy that utilized cold-tolerant crops and livestock. This eventually promoted the expansion of permanent human settlements to high-altitude areas in the NETP. This study found that human societies adopted various strategies to adapt to the changing living environment throughout late prehistoric times in the NETP-CR. The results provide a long-term perspective on the trajectory of regional socio-environmental co-evolution.
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spelling doaj.art-5bfe0efa687941a7801a41a88c9d37392022-12-27T04:37:54ZengKeAi Communications Co. Ltd.Regional Sustainability2666-660X2020-09-01115967Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric periodHuihui Cao0Guanghui Dong1Key Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, ChinaKey Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China; Corresponding author. Key Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.The relationship between the evolution of human societies and their living environments has been discussed intensively in recent decades. It is important to understand the patterns and mechanisms of human–environment interaction and evolution in order to cope with rapidly changing environments in the modern world. We reviewed the results of dating, archaeobotanical, and zooarchaeological studies from 139 prehistoric sites in the Northeast Tibetan Plateau (NETP) and contiguous regions (NETP-CR: i.e., the Hexi Corridor and western margin of the Chinese Loess Plateau) and compared them with paleoenvironmental records to study variations in spatiotemporal patterns of social development in the area and their relationships with climate and vegetation changes. Our results show that hunter-gatherer groups occupied vast areas of the NETP at low intensities during ~15,000–5500 BP (years before present). This was directly related to forest cover and climate change. An increase in temperature and precipitation turnover of vegetation from desert steppe to alpine meadow/subalpine shrub, and recovery of animal population on the Tibetan Plateau created more food resources and space for hunter-gatherers. Millet farmers settled extensively below 2500 ​m a.s.l. (meters above sea level) in the NETP-CR between ~5500 and 3600 BP, and might have coexisted with hunting groups above 2500 ​m a.s.l. via subsistence exchange. The distribution of human settlements during that period was affected by climate change, with the relatively warm and wet climate promoting the expansion of millet agriculture to the NETP-CR during 5500–4500 BP, while climate deterioration caused humans to retreat to lower altitudes. During 3600–2200 BP, a range of livelihoods emerged in different regions of the NETP-CR. This was promoted by early trans-Eurasian exchange and the development of an agro-pastoral economy that utilized cold-tolerant crops and livestock. This eventually promoted the expansion of permanent human settlements to high-altitude areas in the NETP. This study found that human societies adopted various strategies to adapt to the changing living environment throughout late prehistoric times in the NETP-CR. The results provide a long-term perspective on the trajectory of regional socio-environmental co-evolution.http://www.sciencedirect.com/science/article/pii/S2666660X20300086Social evolutionClimate changeSubsistence strategyLate prehistoric periodNortheast Tibetan Plateau
spellingShingle Huihui Cao
Guanghui Dong
Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
Regional Sustainability
Social evolution
Climate change
Subsistence strategy
Late prehistoric period
Northeast Tibetan Plateau
title Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
title_full Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
title_fullStr Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
title_full_unstemmed Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
title_short Social development and living environment changes in the Northeast Tibetan Plateau and contiguous regions during the late prehistoric period
title_sort social development and living environment changes in the northeast tibetan plateau and contiguous regions during the late prehistoric period
topic Social evolution
Climate change
Subsistence strategy
Late prehistoric period
Northeast Tibetan Plateau
url http://www.sciencedirect.com/science/article/pii/S2666660X20300086
work_keys_str_mv AT huihuicao socialdevelopmentandlivingenvironmentchangesinthenortheasttibetanplateauandcontiguousregionsduringthelateprehistoricperiod
AT guanghuidong socialdevelopmentandlivingenvironmentchangesinthenortheasttibetanplateauandcontiguousregionsduringthelateprehistoricperiod