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The enrichments of organic matter and total nitrogen in sediment as affected by relavant factors
Journal of Geographical Sciences, 2004Serious soil erosion has already resulted in degradation of the Loess Plateau of China. Soil erosion is commonly accompanied by extensive soil nutrient loss. Because of enrichment processes, sediment nutrient content is often higher than that of natural soil.
Zhang Xingchang +2 more
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Exploring Coconut Husk as an Organic Matter Enrichment Alternative in Sediment Toxicity Test
Archives of Environmental Contamination and ToxicologyThe use of artificial sediment in toxicity testing is required in studies assessing the impact of chemicals on benthic communities and testing chemicals for registration, as it offers increased repeatability and enhances consistency across bioassays and laboratories.
Davide Asnicar, Benjamin de Jourdan
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Research on preservation and enrichment mechanisms of organic matter in muddy sediment and mudstone
Science in China Series D: Earth Sciences, 2007Using multidiscipline methodologies, the differences in preservation and enrichment mechanisms of organic matter (OM) in muddy sediment and mudstone are investigated. In clay fractions, concentrations of TOC and chloroform bitumen “A” are significantly higher than those in coarser fractions. This indicates that clay minerals (CM) play an important role
JinGong Cai +6 more
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Organic matter and metal enrichment in black shales of the Illinois Basin, USA
2000The New Albany Shale of Indiana is one of several Devonian to Mississippian-age shales that are locally enriched in organic matter and a suite of metals. Previous studies of metal enrichment in black shales have been numerous. Mechanisms of metal concentration in the black shales have been shown to be variable, ranging from primary syngenetic metal ...
E. M. Ripley, N. R. Shaffer
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Earth and Planetary Science Letters, 2006
Abstract Because of a systematic enrichment in deuterium, the insoluble organic matter (IOM) of the carbonaceous chondrites is considered to have formed in the interstellar medium. However, the D / H ratios in IOM remain much lower than those measured in the organic molecules commonly observed in the dense interstellar medium. In this study, the
Remusat, L. +4 more
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Abstract Because of a systematic enrichment in deuterium, the insoluble organic matter (IOM) of the carbonaceous chondrites is considered to have formed in the interstellar medium. However, the D / H ratios in IOM remain much lower than those measured in the organic molecules commonly observed in the dense interstellar medium. In this study, the
Remusat, L. +4 more
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Oecologia, 2007
The mechanisms behind the (13)C enrichment of organic matter with increasing soil depth in forests are unclear. To determine if (13)C discrimination during respiration could contribute to this pattern, we compared delta(13)C signatures of respired CO(2) from sieved mineral soil, litter layer and litterfall with measurements of delta(13)C and delta(15)N
Björn, Boström +2 more
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The mechanisms behind the (13)C enrichment of organic matter with increasing soil depth in forests are unclear. To determine if (13)C discrimination during respiration could contribute to this pattern, we compared delta(13)C signatures of respired CO(2) from sieved mineral soil, litter layer and litterfall with measurements of delta(13)C and delta(15)N
Björn, Boström +2 more
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HERBS' ROLE IN THE ENRICHMENT OF CHESTNUT SOILS WITH ORGANIC MATTER AND NUTRIENTS
Proceedings of Gorsky State Agrarian University, 2022A.A. Sabanova +3 more
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Nitrogen enrichment decreases seagrass contributions to refractory organic matter pools
Limnology and OceanographyAbstractCoastal nitrogen enrichment significantly contributes to the decline of seagrass health and habitat, thereby diminishing its capacity to capture and sequester carbon (i.e., Blue Carbon). However, the consequences to blue carbon stocks due to sublethal changes in chemical recalcitrance of seagrass organic matter (OM) caused by nitrogen ...
Hongxue Luo +8 more
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Enrichment of Organic Matter from Clays
Geologiska Föreningen i Stockholm Förhandlingar, 1960G. Assarsson, V. Grundulis
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Salinity–Organic Matter Coupling Facilitates Geogenic Ammonium Enrichment in Coastal Aquifer Systems
Environmental Science & TechnologyExcessive geogenic ammonium (NH4+-N), derived from the mineralization of naturally nitrogen-containing organic matter (OM), has gained increasing attention, particularly in coastal aquifers. However, the mechanisms linking groundwater NH4+-N enrichment to salinity and its interaction with dissolved organic matter (DOM) and soluble organic matter (SOM ...
Yaojin Xiong +6 more
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