Vegetation influence on soil formation rate in a proglacial chronosequence (Lys Glacier, NW Italian Alps)

被引:68
作者
D'Amico, Michele E. [1 ]
Freppaz, Michele
Filippa, Gianluca
Zanini, Ermanno
机构
[1] Univ Turin, DISAFA, Grugliasco, TO, Italy
关键词
Soil formation; Proglacial area; Soil chronosequence; Podzolization; Subalpine soils; Alpine soils; SWISS ALPS; PRIMARY SUCCESSION; MENDENHALL GLACIER; SOUTHEAST ALASKA; DAMMA GLACIER; FRENCH ALPS; MORAINES; ALPINE; PODZOL; SWITZERLAND;
D O I
10.1016/j.catena.2013.10.001
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Climate change has huge impacts on alpine ecosystems. One of the most visible effects in the Alps is glacier retreat since the end of the Little Ice Age (LIA), which caused the exposure of previously glaciated surfaces. These surfaces are open-air laboratories, verifying theories regarding ecosystem and soil development. In order to increase our knowledge on the effects of time and vegetation primary succession on soil development in proglacial areas, we sampled soils and surveyed plant communities on stable points in the proglacial area of the Lys glacier, in the Italian north-western Alps (Valle d'Aosta Region). The sampling points were located on dated sites (based on literature and/or historical photographs). Glacial till is attacked by weathering processes immediately after deposition and stabilization, with a consequent loss of soluble compounds, decrease of pH and primary mineral weathering. The speed of these processes was largely increased after the establishment of a continuous vegetation cover, thanks to the organic matter accumulation caused by litter input and root decomposition below the soil surface. On sialic glacial tills, below timberline and under a quasi-climax larch-Rhododendron forest, fast and steady decrease in pH values, increase in organic matter content and horizon differentiation were observed. In particular, genetic eluvial horizons formed in approximately 60 years, while diagnostic albic horizons were developed after ca. 90 years, pointing to an early start of the podzolization processes. Cheluviations of Fe and, secondarily, Al were analytically verified. However, illuviations of Fe, Al and organic matter in incipient B horizons were not sufficient to obtain diagnostic spodic horizons on LIA materials. Under grazed grassland below timberline and alpine prairie above timberline, acidification and weathering were slightly slower, and no redistribution with the depths of Fe and Al oxi-hydroxides was observed. A cambic Bw horizon developed on the oldest LIA moraines. Therefore it seemed that this fast onset of the podzolization process in comparison to other proglacial chronosequences in the Alps was mainly driven by vegetation properties rather than by specific climatic conditions. (C) 2013 Elsevier B.V. All rights reserved.
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页码:122 / 137
页数:16
相关论文
共 63 条
  • [1] Humic acid characteristics in podzol soil chronosequence
    Abakumov, Evgeny
    Trubetskoj, Oleg
    Demin, Dmitry
    Celi, Luisella
    Cerli, Chiara
    Trubetskaya, Olga
    [J]. CHEMISTRY AND ECOLOGY, 2010, 26 : 59 - 66
  • [2] Soil development on moraines of Mendenhall Glacier, southeast Alaska .1. The moraines and soil morphology
    Alexander, EB
    Burt, R
    [J]. GEODERMA, 1996, 72 (1-2) : 1 - 17
  • [3] Chemical weathering in the foreland of a retreating glacier
    Anderson, SP
    Drever, JI
    Frost, CD
    Holden, P
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 2000, 64 (07) : 1173 - 1189
  • [4] [Anonymous], 2006, World Reference Base for Soil Resources 2006, V103
  • [5] [Anonymous], FLORA ITALIA
  • [6] Chemical and Biological Gradients along the Damma Glacier Soil Chronosequence, Switzerland
    Bernasconi, Stefano M.
    Bauder, Andreas
    Bourdon, Bernard
    Brunner, Ivano
    Buenemann, Else
    Christl, Iso
    Derungs, Nicolas
    Edwards, Peter
    Farinotti, Daniel
    Frey, Beat
    Frossard, Emmanuel
    Furrer, Gerhard
    Gierga, Merle
    Goeransson, Hans
    Guelland, Kathy
    Hagedorn, Frank
    Hajdas, Irka
    Hindshaw, Ruth
    Ivy-Ochs, Susan
    Jansa, Jan
    Jonas, Tobias
    Kiczka, Mirjam
    Kretzschmar, Ruben
    Lemarchand, Emmanuel
    Luster, Joerg
    Magnusson, Jan
    Mitchell, Edward A. D.
    Venterink, Harry Olde
    Ploetze, Michael
    Reynolds, Ben
    Smittenberg, Rienk H.
    Staehli, Manfred
    Tamburini, Federica
    Tipper, Edward T.
    Wacker, Lukas
    Welc, Monika
    Wiederhold, Jan G.
    Zeyer, Josef
    Zimmermann, Stefan
    Zumsteg, Anita
    [J]. VADOSE ZONE JOURNAL, 2011, 10 (03): : 867 - 883
  • [7] Structural relationships among vegetation, soil fauna and humus form in a subalpine forest ecosystem: a Hierarchical Multiple Factor Analysis (HMFA)
    Bernier, Nicolas
    Gillet, Francois
    [J]. PEDOBIOLOGIA, 2012, 55 (06) : 321 - 334
  • [8] SINGLE-TREE INFLUENCE ON SOIL PROPERTIES IN THE MOUNTAINS OF EASTERN KENTUCKY
    BOETTCHER, SE
    KALISZ, PJ
    [J]. ECOLOGY, 1990, 71 (04) : 1365 - 1372
  • [9] Alpine and Subalpine Vegetation Chronosequences following Deglaciation in Coastal Alaska
    Boggs, K.
    Klein, S. C.
    Grunblatt, J.
    Boucher, T.
    Koltun, B.
    Sturdy, M.
    Streveler, G. P.
    [J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH, 2010, 42 (04) : 385 - 395
  • [10] Braun-Blanquet J, 1948, Vegetatio, V2, P20