Mountain Wetland Distributions Controlled by Landforms and Snow Depth at Quaternary Volcanoes in Northeastern Japan: Assessing the Vulnerability of Wetlands to Reduced Snowfall
Mountain Wetland Distributions Controlled by Landforms and Snow Depth at Quaternary Volcanoes in Northeastern Japan: Assessing the Vulnerability of Wetlands to Reduced Snowfall
复制标题
日本东北部第四纪火山地形和积雪深度控制的山地湿地分布：评估湿地对降雪减少的脆弱性
DOI：
10.1007/s13157-022-01633-8
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发表时间：
2022
期刊：
影响因子：
2
通讯作者：
Sugai Toshihiko
中科院分区：
文献类型：
--
作者：
Sasaki Natsuki;Sugai Toshihiko
我们在日本东北部的三个第四纪火山地区的山地湿地的地形和年最大积雪深度进行分类，以确定其建立的要求。结果表明，不同类型山地湿地的分布反映了凹地地貌的存在和对凹地地貌的水源补给。湿地主要位于原始火山表面或滑坡（陡崖和沉积物）上。前者既包括靠降水维持的湿地，这种湿地位于积雪覆盖的山脊附近，直接由融雪补给;也包括靠地下水维持的湿地，这种湿地要么位于被雪山山坡包围的当地平地上，要么位于熔岩流的终点，那里的积雪要少得多。滑坡湿地在大规模滑坡中更为常见，并且在某种程度上与积雪深度无关;它们发生在原生和次生滑坡形成的洼地中，主要由丰富的地下水补给。我们得出的结论是，原始火山表面的山脊上的降水灌溉湿地比滑坡地下水灌溉湿地对气候变化更敏感。
We classified mountain wetlands in three Quaternary volcanic areas in northeastern Japan in relation to landforms and annual maximum snow depth to determine the requirements for their establishment. We found that the distributions of different types of mountain wetlands reflected the existence of concave landforms and water sources recharging those landforms. Wetlands were located mainly on original volcanic surfaces or on landslides (scarps and deposits). The former included both precipitation-fed wetlands, which occurred near snow-covered ridges and were recharged directly by snowmelt, and groundwater-fed wetlands, which occurred either on local flats surrounded by snowy mountain slopes or at the termini of lava flows, which had much less snow cover. Landslide wetlands were more common on large-scale landslides and were somewhat independent of snow depth; they occurred in depressions formed by primary and secondary landslides and were predominantly recharged by abundant groundwater. We concluded that precipitation-fed wetlands on ridges of original volcanic surfaces are more sensitive to climate change than are groundwater-fed wetlands on landslides.