Precipitation change and its effects on prehistorical human activities in the Gonghe Basin, Northeastern Qinghai-Tibet Plateau during middle and late Holocene

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Hou, Xiaoqing^1 ; Hou, Guangliang^2 ; Wang, Fangfang^1 ; Wang, Qingbo^1

School of Life and Geographic Science, Qinghai Normal University, XiNing

810008, China^1

Physical Geography and Environmental Process Key Laboratory of Qinghai Province, Qinghai Normal University, XiNing

810008, China^2

关键词: Economic patterns;    Human activities;    Mean annual precipitation;    Meteorological data;    Precipitation change;    Production modes;    Qinghai Tibet plateau;    Stationary phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032016/pdf
DOI  :  10.1088/1755-1315/121/3/032016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Northeastern Qinghai-tibet Plateau is considered as the ideal region for study of the climate change during the Holocene. Based on the meteorological data, the surface & fossil pollen data, this paper reconstructed the precipitation series of the region since middle Holocene with the GIS and MAT techniques, and discussed its relationship with prehistorical human activities. The results indicate that there are four major climatic phases: (I) Middle Holocene Humid Phase (6300-5000 aBP), with the primitive millet-farming first imported into the region; (II) Late Middle Holocene Sub-humid Phase (5000-3900 aBP), with the millet-farming spread rapidly within the region; (III) Late Holocene Fluctuation Phase (3900-2900 aBP), with the mean annual precipitation dropped down to lower than 240 mm, and a production mode-shift to a combination of cropping and husbandry; (IV) Late Holocene Stationary Phase (2900-0 aBP), with a precipitation alike the modern time, and a steady farming-pastoral economic pattern.