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Sediment transport by the burrowing activity of snow vole (Chionomys nivalis) in subalpine prairies of the Parâng Mountains (Romania): quantitative modelling and methodological perspectives
Geomorphology ( IF 3.1 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.geomorph.2020.107519
Daniel Germain , Ana-Neli Ianăş , Mircea Voiculescu

Abstract Over the last decades, animal activity has been explored and reported as a potential source of natural hazards, such as the destruction of a beaver dam potentially triggering a flash flood downriver. However, the sediment source or sediment budget related to animal activity has received very little attention from geoscientists to date. The main goal of this study is to quantify the biogenic activity of the European snow vole (Chionomys nivalis) as a sediment source in the subalpine prairies of the Parâng Mountains, Southern Carpathians. Only the direct action of this rodent was analyzed, namely the spatial distribution and frequency of burrowing, quantitative analysis of the mounds, and rate of sediment excavation and mass transfer caused by burrowing and tunnel digging. To do this, 838 burrows and mounds were mapped and measured in eleven plots, and excavated volumes of sediment and mass transfers were calculated following three approaches: 1) measuring the weight of excavated debris; 2) measuring the dimensions of excavated debris; and 3) measuring burrow dimensions. The fieldwork revealed three preferred aspects: south, southeast, and west. The amount of displaced soil was highly variable depending on the approach used, ranging from 3.41 m3/ha to 21.08 m3/ha. As such, snow vole biogenic activity, which is due to the long-term opening of the landscape for traditional transhumance and sheep farming, should be considered to be an important sediment source in the subalpine and alpine prairies of the Parâng Mountain.

中文翻译:

在 Parâng 山脉(罗马尼亚)的亚高山大草原中,雪田鼠(Chionomys nivalis)的挖洞活动造成的沉积物运输:定量建模和方法论观点

摘要 在过去的几十年中,动物活动已被探索并报告为自然灾害的潜在来源,例如海狸大坝的破坏可能引发下游的山洪暴发。然而,迄今为止,与动物活动相关的沉积物来源或沉积物收支很少受到地球科学家的关注。本研究的主要目标是量化欧洲雪田鼠(Chionomys nivalis)作为南喀尔巴阡山脉帕朗山脉亚高山草原沉积物来源的生物活动。只分析了这种啮齿动物的直接作用,即挖洞的空间分布和频率,土墩的定量分析,以及挖洞和隧道挖掘引起的泥沙挖掘和传质速率。去做这个,在 11 个地块中绘制和测量了 838 个洞穴和土丘,并通过三种方法计算了挖掘出的沉积物和传质量:1)测量挖掘出的碎片的重量;2) 测量挖掘出的碎片的尺寸;3) 测量洞穴尺寸。实地考察揭示了三个偏好的方面:南部、东南部和西部。根据所使用的方法,置换土壤的数量变化很大,从 3.41 立方米/公顷到 21.08 立方米/公顷不等。因此,由于传统迁徙和绵羊养殖景观的长期开放,雪田鼠生物活动应被视为帕朗山亚高山和高山草原的重要沉积物来源。1) 测量挖掘出的杂物的重量;2) 测量挖掘出的碎片的尺寸;3) 测量洞穴尺寸。实地考察揭示了三个偏好的方面:南部、东南部和西部。根据所使用的方法,置换土壤的数量变化很大,从 3.41 立方米/公顷到 21.08 立方米/公顷不等。因此,由于传统迁徙和绵羊养殖景观的长期开放,雪田鼠生物活动应被视为帕朗山亚高山和高山草原的重要沉积物来源。1) 测量挖掘出的杂物的重量;2) 测量挖掘出的碎片的尺寸;3) 测量洞穴尺寸。实地考察揭示了三个偏好的方面:南部、东南部和西部。根据所使用的方法,置换土壤的数量变化很大,从 3.41 立方米/公顷到 21.08 立方米/公顷不等。因此,由于传统迁徙和绵羊养殖景观的长期开放,雪田鼠生物活动应被视为帕朗山亚高山和高山草原的重要沉积物来源。根据所使用的方法,置换土壤的数量变化很大,从 3.41 立方米/公顷到 21.08 立方米/公顷不等。因此,由于传统迁徙和绵羊养殖景观的长期开放,雪田鼠生物活动应被视为帕朗山亚高山和高山草原的重要沉积物来源。根据所使用的方法,置换土壤的数量变化很大,从 3.41 立方米/公顷到 21.08 立方米/公顷不等。因此,由于传统迁徙和绵羊养殖景观的长期开放,雪田鼠生物活动应被视为帕朗山亚高山和高山草原的重要沉积物来源。
更新日期:2021-02-01
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