科齐亚山丘(罗马尼亚南喀尔巴阡山脉)林分落石活动的树枝地貌重建

IF 2.4 2区 农林科学 Q1 FORESTRY Forests Pub Date : 2024-01-08 DOI:10.3390/f15010122
A. Ovreiu, C. Oprea, Andreea Andra-Topârceanu, R. Pintilii
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引用次数: 0

摘要

由于历史档案不全,确定落石的时空模式(如危险分区和相关风险评估)具有挑战性。树枝地貌学方法可以弥补数据的不足,并对几个世纪以来的落石活动进行可靠的重建。这些方法以树木年轮中记录的信号为基础,而这些信号会受到落石碎片机械冲击的影响。在这项研究中,我们分析了南喀尔巴阡山脉一片 0.19 公顷森林中的落石时空分布情况。我们从研究区域内发现的所有 40 棵喀斯特树木(1 棵/47 平方米)中采集了 170 个样本(100 个增量岩芯和 70 个茎盘)。这使我们能够确定 1817 年至 2021 年期间 945 个事件的日期,然后将其与现有的天气记录进行比较。我们的研究结果显示了岩石碎片从源头地区坠落的主要轨迹,以及过程活动的显著时间变化。这些变化仅与气象参数的波动略有关联。尽管气候变暖预计会导致自然灾害加剧,但我们的研究区域显示出目前落石活动略有减少的总体趋势。
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Dendrogeomorphological Reconstruction of Rockfall Activity in a Forest Stand, in the Cozia Massif (Southern Carpathians, Romania)
Determining the spatio-temporal patterns of rockfalls, such as the zonation of hazards and the assessment of associated risks, can be challenging due to poor historical archives. Dendrogeomorphological methods cover this lack of data and provide reliable reconstructions of rockfall activities over several centuries. These methods are based on the signals recorded in the tree rings that are affected by the mechanical impact of falling rock fragments. In this study, we analyzed the spatial and temporal distribution of rockfalls in a 0.19 ha forest area in the Southern Carpathians. We collected 170 samples (100 increment cores and 70 stem discs) from all 40 Picea abies (L.) Karst trees identified in the study area (1 tree/47 m2). This allowed us to date 945 events between 1817 and 2021, which we then compared with available weather records. Our results show the main trajectory of falling rock fragments from the source area, as well as significant temporal variations in process activity. These variations correlate only slightly with fluctuations in meteorological parameters. Despite the expected intensification of natural hazards due to climate warming, our study area shows a general trend towards a slight decrease in rockfall activity at present.
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来源期刊
Forests
Forests FORESTRY-
CiteScore
4.40
自引率
17.20%
发文量
1823
审稿时长
19.02 days
期刊介绍: Forests (ISSN 1999-4907) is an international and cross-disciplinary scholarly journal of forestry and forest ecology. It publishes research papers, short communications and review papers. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.
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