Holocene landscape evolution of a nivation hollow on Gassan volcano, northern Japan
Holocene landscape evolution of a nivation hollow on Gassan volcano, northern Japan
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DOI：
10.1016/j.catena.2005.02.004
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发表时间：
2005-07-31
期刊：
影响因子：
6.2
通讯作者：
Kariya, Y
中科院分区：
文献类型：
--
作者：
Kariya, Y
本文描述了对日本北方雪蚀洼地的景观系统（地貌、植被、表土和积雪持续时间）的详细调查结果，并讨论了它们在全新世的演变。研究的雪蚀洼地由三个同心圆区域组成，其景观和历史发展各不相同。最外围的积雪消失得早的区域覆盖着矮小的树木，Sasa kurilensis（亚高山竹子）灌木丛和雪床草。化石的固体流叶和排水沟是常见的。在这一地带，斜坡稳定和植被建立（渗透和解决的斜坡上的植被），其次是成壤发生后12,350卡BP。在中间地带，山坡上大多覆盖着雪床植物，并观察到草皮堆积的ten-aces和轻微的滑塌。该带经历了斜坡稳定和植被建立，然后在4870 calBP成壤。最内侧的区域与雪蚀空心盆地中心的雪致裸露地面重叠。活跃的地貌过程在这里运作，并有丰富的冲浪水和溪流的痕迹。该区不存在腐殖土。雪蚀洼地景观发展的这些差异可能反映了与全新世气候变化相关的雪消失时间的时间变化。(c)2005 Elsevier B.V.保留所有权利。
This paper describes the results of detailed surveys for the landscape systems (landforms, vegetation, topsoils and snow cover duration) of a nivation hollow in northern Japan and discusses their evolution in the Holocene epoch. The nivation hollow studied consists of three concentric zones whose landscapes and historical development are different. The outermost zone where snow disappears early is covered with dwarfed trees, Sasa kurilensis (subalpine bamboo) thicket and snowbed grasses. Fossil solifluction lobes and drainage channels are common. In this zone, slope stabilization and vegetation establishment (penetration and settlement of vegetation on slopes) followed by pedogenesis occurred after 12,350 cal BP. In the middle zone, slopes are mostly covered with snowbed plants, and turf-banked ten-aces and minor slumps are observed. This zone experienced slope stabilization and vegetation establishment followed by pedogenesis after 4870 cal BP. The innermost zone overlaps with the snow-induced bare ground in the centre of the nivation hollow basin. Active geomorphic processes operate here and traces of surficial wash and rills are abundant. Humic soils are not present in this zone. These differences in landscape development of the nivation hollow may reflect the temporal changes in the timings of snow disappearance associated with the Holocene climatic variabilities. (c) 2005 Elsevier B.V. All rights reserved.