DOI: 10.1016/j.quascirev.2017.11.026
Scopus记录号: 2-s2.0-85034823547
论文题名: Alluvial plain dynamics and human occupation in SW Amazonia during the Holocene: A paleosol-based reconstruction
作者: Lombardo U. ; Rodrigues L. ; Veit H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 180 起始页码: 30
结束页码: 41
语种: 英语
英文关键词: Amazonia
; Holocene
; Human-environment interactions
; Paleogeography
; Paleosol
; Rivers
; South America
Scopus关键词: Dynamics
; Nickel
; Stratigraphy
; Amazonia
; Holocenes
; Human-environment interaction
; Paleogeography
; Paleosol
; South America
; Rivers
; environmental change
; floodplain
; fluvial geomorphology
; foreland basin
; Holocene
; nature-society relations
; paleogeography
; paleosol
; reconstruction
; river
; Amazonia
; Beni
; Bolivia
; Bolivia
; Llanos de Mojos
; South America
英文摘要: The present study reconstructs Holocene fluvial dynamics in the southern Amazonian foreland basin through the analysis of 36 stratigraphic profiles taken along a 300 km long transect across the Llanos de Moxos (LM), in the Bolivian Amazon. Based on 50 radiocarbon ages from paleosols intercalated with fluvial sediments, the most important changes in floodplain dynamics on a millennial scale are reconstructed and the links between pre-Columbian cultural processes and environmental change in the region explored. Results show that the frequency of river avulsions and crevasses, as inferred from the number and age of the cored paleosols, is stable from 8k cal. yrs BP to 4k cal. yrs BP and increases significantly from 4k to 2k cal. yrs BP, following the strengthening of el Niño/la Niña cycle and an increase in average precipitation. Fluvial activity then decreases and reaches its minimum after 2k cal BP. A comparison between the stratigraphic record and the archaeological record shows a match between periods of landscape stability in SW Amazonia (low river activity) and periods of pre-Columbian human occupation. The first Amazonians lived in the LM until 4k yrs. BP, when an abrupt increase in the frequency of river avulsions and crevasses forced the abandonment of the region. After two thousand years of archaeological hiatus, which matches the period of highest river activity in the region, agriculturists reoccupied the Bolivian Amazon. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112324
Appears in Collections: 气候减缓与适应
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作者单位: University of Pompeu Fabra, Ramon Trias Fargas 25-27, Mercè Rodoreda, Barcelona, ES-08005m, Spain; Centre d'Ecologie Fonctionnelle et Evolutive, CNRS, 1919 Route de Mende, Montpellier, 34230, France; Institute of Geography, University of Bern, Hallerstrasse 12, Bern, CH-3012, Switzerland
Recommended Citation:
Lombardo U.,Rodrigues L.,Veit H.. Alluvial plain dynamics and human occupation in SW Amazonia during the Holocene: A paleosol-based reconstruction[J]. Quaternary Science Reviews,2018-01-01,180