Elemental mobilisation by sheet erosion affected by soil organic carbon and water fluxes along a radiotraced soil catena with two contrasting parent materials

Geomorphology ◽  
2020 ◽  
Vol 370 ◽  
pp. 107387
Author(s):  
Leticia Gaspar ◽  
Ivan Lizaga ◽  
Ana Navas
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Water Fluxes ◽  
Parent Materials ◽  
Soil Catena ◽  
Sheet Erosion

scholarly journals Controls on Soil Organic Carbon Partitioning and Stabilization in the California Sierra Nevada

Soil Systems ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 41 ◽  
Author(s):  
Craig Rasmussen ◽  
Heather Throckmorton ◽  
Garrett Liles ◽  
Katherine Heckman ◽  
Stephen Meding ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Sierra Nevada ◽  
Residence Time ◽  
Ponderosa Pine ◽  
Forest Ecosystems ◽  
Storage Capacity ◽  
Parent Materials ◽  
Soil Weathering ◽  
White Fir

There is a critical need to quantify the role of soil mineral composition on organic carbon (C) stabilization in forest soils. Here, we address this need by studying a matrix of forest ecosystems and soil parent materials with the objective of quantifying controls on the physical partitioning and residence time of soil organic carbon. We sampled soil profiles across a climate gradient on the western slope of the California Sierra Nevada, focusing on three distinct forest ecosystems dominated by ponderosa pine, white fir, or red fir, on three igneous parent materials that included granite, andesite, and basalt. Results indicated that short-range order mineral phases were the dominant factors accounting for the variation in soil carbon content and residence time. The results further suggested an interaction between ecosystem fire regime and the degree of soil weathering on the partitioning, chemical composition, and residence time of C in density separated soil physical fractions. These results suggest a link between the degree of soil weathering and C storage capacity, with a greater divergence in storage capacity and residence time in the Inceptisols, Entisols, and Andisols of the white fir and red fir ecosystems relative to minimal variation in the highly weathered Ultisols and Alfisols of the ponderosa pine ecosystem.

scholarly journals Parent Material Effect on Soil Organic Carbon Concentration under Primeval European Beech Forests at a Regional Scale

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 405
Author(s):  
Viliam Pichler ◽  
Erika Gömöryová ◽  
Christoph Leuschner ◽  
Marián Homolák ◽  
Ioan Vasile Abrudan ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Concentration ◽  
Regional Scale ◽  
European Beech ◽  
Parent Material ◽  
Climatic Variables ◽  
Stand Volume ◽  
Parent Materials ◽  
Organic Carbon Concentration

The research presented herein explores soil organic carbon concentration (SOCC) under monodominant primeval forests of European beech trees and their association with parent material on a regional scale. Soil sampling to a maximum depth of 0.8 m was conducted in six localities in the West, East, and South Carpathians, Eastern Albanides, and Central Apennines, situated on different parent materials. Samples were analysed for SOCC by the dry combustion method. The average SOCC values representing individual localities ranged from 12.5 g kg−1 to 154.8 g kg−1 with a 99.7% coefficient of variation. SOCC association with climatic variables and forest stand volume data available from the literature were assessed by a Pearson correlation coefficient. Differences in SOCC among localities caused by site conditions were treated as a fixed factor in Welch’s ANOVA and found to be significant (p < 0.05) in the majority of cases. The associations between SOCC and climatic variables or stand volume were nonsignificant or perturbed. Since they validly explained less than 10% of the overall SOCC variance, the results of multiple comparison tests were assessed and interpreted in view of distinct parent materials.

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