کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5788309 1642451 2017 46 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vegetation cover changes during the last 7200 years at 2000 m in the Southwestern Alps (Lautaret Pass, France): A combined palynological and paleobotanical study
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فسیل شناسی
پیش نمایش صفحه اول مقاله
Vegetation cover changes during the last 7200 years at 2000 m in the Southwestern Alps (Lautaret Pass, France): A combined palynological and paleobotanical study
چکیده انگلیسی
We present a multidisciplinary approach to document the vegetation and landscape of Upper Guisane Valley around the Lautaret Pass area in the French Southwestern Alps since 7200 calyr BP. We combined pollen analysis in a peat bog (at 2044 m) with a leaf imprint study in two nearby travertine systems (at 2100 and 1950 m). During the last 7200 years, there was an open landscape with scarce trees such asconifers including Larix decidua Mill., Pinus spp., and Abies alba Mill. 2100 m was the highest altitude where fossils of A. alba Mill. have been reported in the Guisane Valley. These results, according to the pollen record of anthropogenic indicators and an increasing biodiversity of grasslands, suggest a human presence in the pass area since ca 6500 years with a pre-Roman deforestation. This human impact has become maximum from 1100 calyr BP to present, resulting from cereal crop agriculture and deforestation. The comparative study of the different records confirmed the role played by the exposition in the forest dynamics of the alpine valleys during the Holocene.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Review of Palaeobotany and Palynology - Volume 246, November 2017, Pages 32-43
نویسندگان
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