Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 553442
Title Exploring near-surface ground ice distribution in patterned-ground tundracorrelations with topography, soil and vegetation: correlations with topography, soil and vegetation
Author(s) Wang, Peng; Jager, Judith de; Nauta, Ake; Huissteden, Jacobus van; Trofim, Maximov C.; Limpens, Juul
Source Plant and Soil 444 (2019)1-2. - ISSN 0032-079X - p. 251 - 265.
DOI https://doi.org/10.1007/s11104-019-04276-7
Department(s) WIMEK
Plant Ecology and Nature Conservation
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Arctic tundra - Ground ice - Permafrost degradation - Polygon - Thaw depth - Vegetation
Abstract

Aims: For informed predictions on the sensitivity of Arctic tundra landscape to permafrost thaw, we aimed to investigate the distribution pattern of near-surface ground ice and its influencing factors in Northeast Siberia. Methods: Near-surface permafrost cores (60 cm) were sampled along small-scale topographic gradients in two drained lakebeds. We investigated which factors (vegetation, hydrological and soil) correlated strongest with ice content and explored its spatial heterogeneity at different scales (1 to 100 m). Results: The ice content was highest in the depressions of the wet lakebed and lowest at the slopes of the dry lakebed. In the wet lakebed the ice content increased with depth, while in the dry lakebed the vertical distribution depended on topographical position. Spatial variability in ice content was similar at different scales, stressing strong influence of local drivers. 0–60 cm ice content correlated strongest with soil moisture of the overlying unfrozen soil, while 0–20 cm ice content correlated strongest with vegetation characteristics. Conclusions: Our study implies that vegetation effect on microclimate is strong enough to affect near-surface ice distribution, and that ice-rich tundra may be highly sensitive to thaw once climate warming offsets the protective impact of vegetation.

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