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Soil organic carbon (SOC) and total nitrogen (TN) play major roles in soil quality and the global carbon budget. They can be measured rapidly and cost-effectively via visible and near-infrared reflectance (VNIR) spectroscopy. However, the reliability of this method is questionable because of the effects of heterogeneity. At present, only a few publications have addressed the effect of soil layers...
The release and stability of soil water-dispersible colloids (WDC) in the soil structure are critical for colloid-facilitated soil organic carbon sequestration and contaminants transport. In this study, the potential effects of temperature and associated organic carbon (OC) on the release of WDCs in three silt loam topsoils with the same clay content (~20%) under different land uses were investigated...
The aim of the paper is to compare soil organic carbon (SOC) concentration and stock in a Rendzic Leptosol and a Dystric Andosol as two SOC-rich soil types. Because SOC differences between them are difficult to determine from soil databases, a suitable surface geological configuration of andesite lenses embedded within a flat limestone plateau was used for a direct comparison. All the other site conditions...
The spatial heterogeneity of phosphorus (P) and different P forms in soils has implications for plant, microbial, and ecosystem P supply. Little information is available concerning the small-scale vertical and horizontal distributions of P and important variables for P binding at the soil profile scale. We assessed spatial patterns of total P and different P fractions, and of major P binding partners...
Aggregation is an important physical process to study during the early formation of Technosols. It is known to be influenced both by the organic matter content and soil biota. Constructed Technosols represent good models to test the importance of these factors since their composition can be easily manipulated by mixing different proportions of parent materials and introducing soil organisms. In this...
As a unique biomarker of terrigenous organic matter (OM), lignin has provided valuable information for tracing the sources of OM in land to ocean transfer. Oceanian small mountainous rivers (SMRs) are characterized by extremely high erosional rate and quick change in microclimate within watershed, which may potentially affect the distribution of soil OC and lignin concentrations and compositions....
Emerging evidence shows that interactions between soils and subsurface flow paths contribute to spatial variations in stream water chemistry in headwater catchments. However, few have yet attempted to quantify chemical variations in soils at catchment and hillslope scales. Watershed 3 (WS3) at Hubbard Brook Experimental Forest, New Hampshire, USA, was studied in order to better understand pedogenesis...
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