Post‐landslide soil and vegetation recovery in a dry, montane system is slow and patchy

Post‐landslide soil and vegetation recovery in a dry, montane system is slow and patchy
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在干燥的山地系统中,滑坡后的土壤和植被恢复缓慢且不完整

DOI:
10.1002/ecs2.3346
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发表时间:
2021
期刊:
影响因子:
2.7
通讯作者:
Pawlik, Łukasz
Pawlik, Łukasz
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Buma, Brian;Pawlik, Łukasz

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滑坡是世界范围内常见的森林灾害,是威胁人类生命和财产安全的重要因素。随着风暴的加剧,许多地区的山体滑坡可能会变得更加常见。森林植被可以通过长而深的根穿过和穿过破坏面来提高山坡的稳定性。在美国落基山脉,山体滑坡并不常见,但发生时却很普遍。对这些问题的研究也极为不足,人们对基本的植被恢复过程和重新稳定山丘的植被建立速度知之甚少。本研究首次对落基山脉南部森林滑坡的滑坡后植被恢复进行了评估。六年后,一个重大的滑坡事件,调查的网站有很少的再生在启动区,即使控制土壤覆盖。土壤浅,少氮丰富的起始区以及。无论在载玻片上的位置如何,功能组之间的生根深度相似,但深生根树在起始区中不太常见。在这些低海拔,温暖/干燥的环境中缺乏干扰后的树木再生,在各种干扰类型中很常见,这表明这些山坡的完全树木重新稳定可能是缓慢的或不存在的,特别是随着气候变暖。草的替代可以防止浅层的不稳定性,但不能防止威胁生命和财产的更深层次的群体运动事件。
Landslides are common disturbances in forests around the world, and a major threat to human life and property. Landslides are likely to become more common in many areas as storms intensify. Forest vegetation can improve hillslope stability via long, deep rooting across and through failure planes. In the U.S. Rocky Mountains, landslides are infrequent but widespread when they do occur. They are also extremely understudied, with little known about the basic vegetation recovery processes and rates of establishment which restabilize hills. This study presents the first evaluation of post‐landslide vegetation recovery on forested landslides in the southern Rocky Mountains. Six years after a major landslide event, the surveyed sites have very little regeneration in initiation zones, even when controlling for soil coverage. Soils are shallower and less nitrogen rich in initiation zones as well. Rooting depth was similar between functional groups regardless of position on the slide, but deep‐rooting trees are much less common in initiation zones. A lack of post‐disturbance tree regeneration in these lower elevation, warm/dry settings, common across a variety of disturbance types, suggests that complete tree restabilization of these hillslopes is likely to be a slow or non‐existent, especially as the climate warms. Replacement by grasses would protect against shallow instabilities but not the deeper mass movement events which threaten life and property.
滑坡生态学:滑坡生态学的大尺度和未来方向
DOI: --
发表时间: 2012
期刊:
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DOI: 10.1093/treephys/16.7.635
发表时间: 1996-07
期刊: Tree physiology
影响因子: 4
作者:
J. King;R. B. Thomas;B. Strain
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DOI: --
发表时间: 2013
期刊:
影响因子: --
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Łukasz Pawlik
通讯作者: Łukasz Pawlik