Oasis evolution processes and mechanisms in the lower reaches of Heihe River, Inner Mongolia, China since 1 ka ago
Bibliographic Data
| ID | 12265293 |
|---|---|
| Authors | Hui Zhao (0009-0002-8489-5747, Chinese Academy of Sciences, corresponding author), Yongwei Sheng (0000-0003-4447-944X, Department of Geography, University of California, Los Angeles, USA), Jiawu Zhang (Lanzhou University), Yan Zhao (0009-0007-8186-9443, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, China), Guoqiang Li (0000-0002-1493-6657, Lanzhou University) |
| Year | 2014 |
| Volume | 25 |
| Issue | 3 |
| Pages | 445-453 |
| Publication date | 2014-12-04 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683614561880 |
| OpenAlex | W2093762559 |
| Language | EN |
| References cited | 31 |
Two major oases in the lower reaches of Heihe River, Inner Mongolia of China, the desertified ancient Juyanze oasis (AJO) and the modern Ejina oasis (MEO), experienced dramatic environmental changes and human migrations as documented in historic records. The processes and mechanisms of their evolution are the key for us to understand the environmental changes and human activities in this region, yet are still unclear. This study provides an evolution chronology of these two oases by analyzing the optical dating records from MEO and 14 C dating records from AJO and discusses their evolution mechanisms based on drainage network analysis and field investigations. The optical dating samples collected from aeolian sands below humus layers in Populus euphratica woodlands on MEO indicate that this oasis developed between 1.05 and 0.45 ka ago, while the 14 C dating samples collected from a number of dead P. euphratica trees from AJO consistently suggest that the complete desertification of AJO occurred before ~400 cal. a BP. These new dating results imply that the two oases evolved simultaneously but in opposite directions. That is, AJO desertified while MEO developed gradually in the last 1 ka. Climate change occurring over the last 1 ka in northern China cannot explain the opposite evolution directions of these two adjacent oases. The drainage network analysis based on digital elevation models (DEMs) and field observations and the dates (~0.5 ka) of the top lacustrine layer from GaxuNur Lake north of MEO suggest that the evolution of the two oases was mainly governed by Heihe River migration
Aeolian processes · Archaeology · Biology · China · Chronology · Desertification · Geography · Inner mongolia · Physical geography · Populus euphratica · Woodland · Archaeology and ancient environmental studies · Geology and Paleoclimatology Research · Pleistocene-Era Hominins and Archaeology · Ecology · Geology · Paleontology
Lake Evolution in the Tengger Desert, Northwestern China, during the Last 40,000 Years
An Introduction to Optical Dating
Cosmic ray and gamma ray dosimetry for TL and ESR
Optical dating of sediments
A review of quartz optically stimulated luminescence characteristics and their relevance in single-aliquot regeneration dating protocols
The distribution of apparent dose as determined by Optically Stimulated Luminescence in small aliquots of fluvial quartzImplications for dating young sediments
Cosmic ray contributions to dose rates for luminescence and ESR dating
Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol
A record of Holocene climate change in the Guanzhong Basin, China, based on optical dating of a loess-palaeosol sequence
IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP
| Citation velocity | historical |
|---|---|
| Highly cited | No |