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Journal of Mountain Science 2020年第5期17卷 1013-1031页

作者： SERRANO Enrique LóPEZ-MORENO Juan Ignacio GóMEZ-LENDE Manuel PISABARRO Alfonso MARTíN-MORENO Raúl RICO Ibai ALONSO-GONZáLEZ Esteban Dept of GeographyUniversity of ValladolidValladolid 47011Spain Dept of Geoenvironmental Processes and Global ChangePyrenean Institute of EcologyZaragoza 50.080Spain Dept.Specific Didactics.Autonom University of Madrid.Madrid 28049Spain Dept of GeographyPrehistory and ArcheologyUniversity of the Basque CountryVitoria 01006Spain

Seasonally frozen ground,mountain permafrost and cryogenic geomorphological processes are important components of the Pyrenean high *** work presents the results of a study on the distribution of frozen ground in a marginal and paraglacial environment of temperate *** inventory was made of landforms and indicators of frozen ground,and frozen ground was mapped *** 2014 and 2016 ground temperatures and thermal regimes were monitored,basal temperatures of snow-cover(BTS)were measured and a thermal map was *** thermal behaviours were detected among different elevations and slope *** processes are the most widespread,in which frost weathering and nivation,together with gelifluction and cryoturbation,are the most efficient processes;the latter two are generally linked to the presence of frozen *** fall in air and ground temperatures with altitude,slope orientations,and snowpack thickness and evolution determine ground thermal *** the study area,three types of thermal regimes were established:climate-controlled,snowcover-controlled,and frozen *** frozen ground occurs across a broad range of elevation between 2650 and 3075 m asl,whereas possible permafrost only occurs above 2750 m asl.

关键词： Geomorphology periglacial Seasonally frozen ground Mountain permafrost Pyrenees

CHARACTERISTICS OF periglacial GEOMORPHOLOGY IN THE SOURCE AREA OF THE HUANGHE RIVER

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Chinese Geographical Science 1993年第2期3卷 69-78页

作者：郭鹏飞边纯玉 1. Lanzhou Hydrogeological and Engineering Geologic Centre Ministry of Geology and Minerals 730000 Lanzhou PRC 2. 906 Hydrogeological and Engineering Geologic Team Ministry of Geology and Minerals 810000 Xining PRC

There widely occur stretches of permafrost at more than 3,800-4,200 meters above sea level in the source area of the Huanghe (Yellow) River. The periglacial geomorphology develops quite well, including frozen disintegration geomorphology, freezing and thawing geomorphology in cold environments, periglacial dune, buried ices and fossil periglacial phenomena. In light of the relation between stratigraphy and periglacial phenomena, three periglacial periods can be divided, which are the Middle Pleistocene periglacial period, the Late Pleistocene periglacial period and modern periglacial period.

关键词： source area of the Huanghe River periglacial geomorphology periglacial period

DISTRIBUTION OF periglacial GEOMORPHOLOGY AND THE RELATIONSHIP BETWEEN periglacial GEOMORPHOLOGY AND GLACIATED HISTORY ON FILDES PENINSULA, KING GEORGE ISLAND,ANTARCTICA

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Chinese Geographical Science 1993年第2期3卷 85-92页

作者：朱诚崔之久

As for the formation of the submerged trough of Maxwell Bay and the external agent geomorphic-phenomena of Fildes Peninsula, we can use glaciated theory to explain them. Moreover, based on a large number of field investigation by foreign colleagues and the authors, we can consider that the last glaciated ice-stream which had a great effect on current periglacio-landform distribution, mainly flowed along the direction from northwest to southeast. The periglacio-geomorphic distribution of the peninsula has a deep brand of glaciated history. Three kinds of different profile assemblage features show that the periglacial landform have an internal relationship in genesis. They also show a difference between stoss and leeward slopes by glaciated effect.

关键词： Fildes Peninsula periglacial geomorphology glaciated history

Plant functional traits and microbes vary with position on striped periglacial patterned ground at Glacier National Park, Montana

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Journal of Geographical Sciences 2019年第7期29卷 1127-1141页

作者： APPLE Martha Elizabeth RICKETTS Macy Kara MARTIN Alice Caroline Department of Biological Sciences Montana Technological University Butte Montana 59701 USA Department of Botany The University of Wyoming Laramie Wyoming 82071 USA Division of Biological Sciences The University of Montana Missoula Montana 59812 USA

The retreating snowfields and glaciers of Glacier National Park, Montana, USA, present alpine plants with changes in habitat and hydrology. The adjacent and relic periglacial patterned ground consists of solifluction terraces of green, vegetation-rich stripes alternating with sparsely vegetated brown stripes. We established georeferenced transects on striped periglacial patterned ground for long-term monitoring and data collection on species distribution and plant functional traits at Siyeh Pass and at Piegan Pass at Glacier National Park. We documented species distribution and calculated the relative percent cover(RPC) of qualitative functional traits and used 16 S rRNA from soil samples to characterize microbial distribution on green and brown stripes. Plant species distribution varied significantly and there were key differences in microbial distribution between the green and brown stripes. The rare arctic-alpine plants Draba macounii, Papaver pygmaeum, and Sagina nivalis were restricted to brown stripes, where the RPC of xeromorphic taprooted species was significantly higher at the leading edge of the Siyeh Pass snowfield. Brown stripes had a higher percentage of the thermophilic bacteria Thermacetogenium and Thermoflavimicrobium. Green stripes were co-dominated by the adventitiously-rooted dwarf shrubs Salix arctica and the possibly N-fixing Dryas octopetala. Green stripes were inhabited by Krummholz and seedlings of Abies lasiocarpa and Pinus albicaulus. Prosthecobacter, a hydrophilic bacterial genus, was more abundant on the green stripes, which had 6,524 bacterial sequences in comparison to the 1,183 sequences from the brown stripes. While further research can determine which functional traits are critical for these plants, knowledge of the current distribution of plant species and their functional traits can be used in predictive models of the responses of alpine plants to disappearing snowfields and glaciers. This research is important in conservation of r

关键词： alpine plants plant functional traits microbes periglacial patterned ground climate change Glacier National Park, Montana