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Título

Paleoenvironmental Changes during the Last 4000 yr in the Tigray, Northern Ethiopia

AutorMachado, María José ; Pérez-González, Alfredo; Benito, Gerardo
Palabras claveTigray
Paleoenvironmental Changes
Northern Ethiopia
Fecha de publicaciónmay-1988
EditorUniversity of Washington
CitaciónQuateranary Research, 49, 312-321
ResumenIn the Tigray region at the northern Ethiopian Highlands, paleoenvironmental reconstruction based on several infilled valley deposit sequences suggests that the past 4000 yr comprised three major wetter periods (ca. 4000–3500 yr B.P., 2500–1500 yr B.P., and 1000–960 yr B.P.), during which soils were formed, and two degradation episodes (ca. 3500–2500 yr B.P. and 1500–1000 yr B.P.), during which there was an increase of sediment yield from the slopes into the valleys. For the past 1000 yr, and in particular since the early 17th century, stratigraphic records together with historic chronicles suggest increasing aridity. Although difficulties arise in distinguishing between natural and human impacts, particularly in a region with a long established agricultural background, stratigraphical and proxy paleoclimatic data have indicated climate as the main controlling factor responsible for the environmental changes in the Tigray.
Versión del editorhttp://dx.doi.org/10.1006/qres.1998.1965
URIhttp://hdl.handle.net/10261/13213
DOI10.1006/qres.1998.1965
ISSN0033-5894
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