灾难性滑坡后植被恢复和景观演变模式的重建(1248年,法国阿尔卑斯山脉格拉尼埃山)

IF 3.3 2区 地球科学 Q2 ENVIRONMENTAL SCIENCES
A. Quiquerez , E. Gauthier , V. Bichet , C. Petit , L. Murgia , H. Richard
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引用次数: 3

摘要

调查过去人类与环境的相互作用为理解景观对灾难性事件的反应提供了线索。本研究使用多代理方法重建了一个地区在过去800年里的景观变化,该地区的斜坡和土壤在公元1248年被格兰尼埃山滑坡(法国阿尔卑斯山)重塑。从滑坡形成的圣安德烈湖(Lake St. andr)提取的89厘米沉积物岩心进行花粉和沉积物分析,用于重建植被恢复和农牧活动。基于地籍图的土地覆盖变化研究补充了对湖泊沉积物的分析。航空照片提供了18世纪以来空间景观组织的信息。结果表明,土地利用系统的显著变化与社会、政治和经济事件密切相关。就在滑坡发生后,先锋植被群落开始迅速重新定居。尽管冲突导致农业衰退的短暂阶段,农牧活动从16世纪开始多样化,土地利用以农田、葡萄园和草原为主。耕地,尤其是葡萄园的扩张一直持续到19世纪。20世纪初,这片土地的特点是以混合家庭农业为基础的农牧经济。从20世纪60年代开始,放牧停止了,乳制品生产被葡萄种植所取代。因此,滑坡后农牧系统的变化反映了复杂的地貌、政治、社会和经济相互作用。该研究还展示了多代理方法如何解读景观演变,揭示景观变化背后的人与环境相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reconstructing patterns of vegetation recovery and landscape evolution after a catastrophic landslide (Mont Granier, French Alps, 1248 CE)

Investigating past human-environment interactions provides clues to understand landscape responses to catastrophic events. This study uses a multiproxy approach to reconstruct landscape change over the past 800 years, in an area where slopes and soils were reshaped by the Mont Granier landslide (French Alps) in 1248 CE. Pollen and sediment analyses of an 89-cm sediment core retrieved from Lake St. André, a lake formed by the landslide, were used to reconstruct vegetation recovery and agro-pastoral activities. These analyses of lake sediments were supplemented by studying land-cover changes based on cadastral maps. Aerial photographs provided information about spatial landscape organization from the 18th century onwards. Results showed that significant changes in land-use systems were closely linked to social, political, and economic events. Rapid recolonization by pioneer vegetation communities began just after the landslide. Despite short phases of conflict-induced agricultural decline, agro-pastoral activities diversified from the 16th century onwards, with land use dominated by croplands, vineyards, and grasslands. The extension of arable lands, particularly vineyards, continued until the 19th century. At the beginning of the 20th century, this territory was characterized by an agro-pastoral economy based on mixed family farming. From the 1960 s onwards, cattle grazing ceased, and dairy production was replaced by viticulture.

Changes in the agro-pastoral system after the landslide therefore reflect complex geomorphological, political, social, and economic interactions. This study also demonstrates how a multiproxy approach can decipher landscape evolution and reveal the human-environment interactions behind landscape change.

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来源期刊
Anthropocene
Anthropocene Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)
CiteScore
6.30
自引率
0.00%
发文量
27
审稿时长
102 days
期刊介绍: Anthropocene is an interdisciplinary journal that publishes peer-reviewed works addressing the nature, scale, and extent of interactions that people have with Earth processes and systems. The scope of the journal includes the significance of human activities in altering Earth’s landscapes, oceans, the atmosphere, cryosphere, and ecosystems over a range of time and space scales - from global phenomena over geologic eras to single isolated events - including the linkages, couplings, and feedbacks among physical, chemical, and biological components of Earth systems. The journal also addresses how such alterations can have profound effects on, and implications for, human society. As the scale and pace of human interactions with Earth systems have intensified in recent decades, understanding human-induced alterations in the past and present is critical to our ability to anticipate, mitigate, and adapt to changes in the future. The journal aims to provide a venue to focus research findings, discussions, and debates toward advancing predictive understanding of human interactions with Earth systems - one of the grand challenges of our time.
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