کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5780884 1635357 2017 41 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Implications of (reworked) aeolian sediments and paleosols for Holocene environmental change in Western Mongolia
ترجمه فارسی عنوان
پیامدهای رسوبات رشته ای (بازسازی شده) و پالئوسول ها برای تغییر محیط زیست هولزان در مغولستان غربی
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موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Extensive aeolian sediment transport occurred from 17 to 10 ka during the late glacial when climate was cold and dry. Since that period the developing steppe and alpine meadow vegetation served as a dust trap. During the warm and wet early to mid-Holocene sediment transport was reduced under a dense vegetation cover. All paleosols of the investigated archives show late Holocene ages which point to an environmental turning point around 3 ka. Since then, the Neoglacial period started with cooler climate conditions and periglacial processes intensified again. Recognizable glacier advances occurred during the Little Ice Age several centuries ago. Since then, global climate change leads to warmer and more arid conditions. During the late Holocene, a new period of strong geomorphological activity started and huge quantities of aeolian, colluvial and fluvial sediment accumulated. These intensified soil relocation processes cannot be explained exclusively by climate change because there are no explicit indications found in the palynological and lacustrine records of Mongolia. This discrepancy suggests that the additional factor of human impact has to be considered, which amplified the climate signal on the landscape. Simultaneously, when the enhanced geomorphological processes occurred, the prehistoric people changed from hunting and gathering to livestock husbandry. A first extensive population growth of the Scythian nomadic tribes is documented for the beginning of the Bronze Age in Central Asia. This temporal concurrence supports the finding of a first extensive human impact on landscape development.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 292, 1 September 2017, Pages 59-71
نویسندگان
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