scholarly journals Techno-moder: A proposal for a new morpho-functional humus form developing on Technosols revealed by micromorphology

Geoderma ◽  
2020 ◽  
Vol 375 ◽  
pp. 114526
Author(s):  
Gabin Colombini ◽  
Apolline Auclerc ◽  
Françoise Watteau
Keyword(s):  
Humus Form

scholarly journals Modeling Spatial Patterns of Humus Forms in Montane and Subalpine Forests: Implications of Local Variability for Upscaling

2018 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
Niels Hellwig ◽  
Dylan Tatti ◽  
Giacomo Sartori ◽  
Kerstin Anschlag ◽  
Ulfert Graefe ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Ground Cover ◽  
Landscape Scale ◽  
Local Scale ◽  
Mountain Forest ◽  
High Mountain ◽  
Subalpine Forests ◽  
Humus Forms ◽  
Humus Form ◽  
Local Variability

Humus forms are a distinctive morphological indicator of soil organic matter decomposition. The spatial distribution of humus forms depends on environmental factors such as topography, climate and vegetation. In montane and subalpine forests, environmental influences show a high spatial heterogeneity, which is reflected by a high spatial variability of humus forms. This study aims at examining spatial patterns of humus forms and their dependence on the spatial scale in a high mountain forest environment (Val di Sole/Val di Rabbi, Trentino, Italian Alps). On the basis of the distributions of environmental covariates across the study area, we described humus forms at the local scale (six sampling sites), slope scale (60 sampling sites) and landscape scale (30 additional sampling sites). The local variability of humus forms was analyzed with regard to the ground cover type. At the slope and landscape scale, spatial patterns of humus forms were modeled applying random forests and ordinary kriging of the model residuals. The results indicate that the occurrence of the humus form classes Mull, Mullmoder, Moder, Amphi and Eroded Moder generally depends on the topographical position. Local-scale patterns are mostly related to micro-topography (local accumulation and erosion sites) and ground cover, whereas slope-scale patterns are mainly connected with slope exposure and elevation. Patterns at the landscape scale show a rather irregular distribution, as spatial models at this scale do not account for local to slope-scale variations of humus forms. Moreover, models at the slope scale perform distinctly better than at the landscape scale. In conclusion, the results of this study highlight that landscape-scale predictions of humus forms should be accompanied by local- and slope-scale studies in order to enhance the general understanding of humus form patterns.

scholarly journals Effect of forest tree species on the humus form state at lower altitudes 

2012 ◽  
Vol 51 (No. 2) ◽  
pp. 60-66 ◽  
Author(s):  
V. V Podrázský ◽  
J. Remeš
Keyword(s):  
Organic Matter ◽  
Species Composition ◽  
Site Effects ◽  
Nutrient Dynamics ◽  
Forest Tree ◽  
Negative Effects ◽  
Litter Accumulation ◽  
Spruce Stands ◽  
Humus Form ◽  
Humus Accumulation

  The paper documents the effects of forest stands of different species composition on the humus form state and soil profile chemistry. It compares the situation in mixed broadleaved (ash, oak, hornbeam), basswood and spruce stands. Spruce demonstrates the site degradation effects: raw humus accumulation, soil acidification, negative effects on nutrient dynamics. Both broadleaved stands were similar as for site effects, lower litter accumulation, more rapid organic matter mineralization and more rapid nutrient cycling and intense uptake were documented in the basswood stand.  

scholarly journals Positive feedback loop between earthworms, humus form and soil pH reinforces earthworm abundance in European forests

2020 ◽  
Vol 34 (12) ◽  
pp. 2598-2610
Author(s):  
Ellen Desie ◽  
Koenraad Van Meerbeek ◽  
Hans De Wandeler ◽  
Helge Bruelheide ◽  
Timo Domisch ◽  
...  
Keyword(s):  
Soil Ph ◽  
Positive Feedback ◽  
Feedback Loop ◽  
Positive Feedback Loop ◽  
European Forests ◽  
Humus Form

Tree or soil? Factors influencing humus form differentiation in Italian forests

Geoderma ◽  
2016 ◽  
Vol 264 ◽  
pp. 195-204 ◽  
Author(s):  
Anna Andreetta ◽  
Guia Cecchini ◽  
Eleonora Bonifacio ◽  
Roberto Comolli ◽  
Simona Vingiani ◽  
...  
Keyword(s):  
Soil Factors ◽  
Factors Influencing ◽  
Humus Form

scholarly journals Opposite responses of vascular plant and moss communities to changes in humus form, as expressed by the Humus Index

2008 ◽  
Vol 19 (5) ◽  
pp. 645-652 ◽  
Author(s):  
Arnault Lalanne ◽  
Jacques Bardat ◽  
Fouzia Lalanne‐Amara ◽  
Thierry Gautrot ◽  
Jean‐François Ponge
Keyword(s):  
Vascular Plant ◽  
Humus Form

Humus Form Development during Forest Restoration in Exclosures of the Tigray Highlands, Northern Ethiopia

2009 ◽  
Vol 17 (2) ◽  
pp. 280-289 ◽  
Author(s):  
Katrien Descheemaeker ◽  
Bart Muys ◽  
Jan Nyssen ◽  
Wim Sauwens ◽  
Mitiku Haile ◽  
...  
Keyword(s):  
Forest Restoration ◽  
Northern Ethiopia ◽  
Humus Form ◽  
Form Development
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