The method of densimetric fractionation was applied to study soil organic matter; it enabled us to distinguish its three fractions, differing in carbon participation in the biological turnover: free particulate organic matter (fPOM 1.6 ). The latter fraction dominated in the upper mineral soil ...
The composition of soil includes organic matter, minerals, water and air. Which part mainly comes from the atmosphere? A. Organic matter B. Minerals C. Water D. Air 相关知识点: 试题来源: 解析 D。解析:土壤的组成成分中,矿物质(B选项)主要来源于岩石圈;有机物(A选项)主要由生物遗体分解而来,...
forest soils, Cambisols, Podzols, genetic soil types, wettability, soil wettability, soil organic matterphilic nor hydrophobic, however, exhibit a subcritical level of water repellence (e.g., Hallett et al., 2001). The Soil organic matter (SOM) as a solid or as a film at mineral surfaces...
In Situ DRIFT Characterization of Organic Matter Composition on Soil Structural Surfaces.doi:10.2136/sssaj2008.0103The properties of preferential flow path surfaces may affect transport processes in structured soil. Wetting and sorption depends on the organic matter (OM) at the effective outermost surface...
The biochemical mechanisms responsible for soil organic C (SOC) accumulation under N enrichment are not well understood. By examining two N types (NH4Cl and NaNO3) and three rates (0, 40, and 120 kg N ha1 yr1), we investigated the concentration and distribution of SOC by using soil aggreg...
Enrichment of lignin-derived carbon in mineral-associated soil organic matter. Environ. Sci. Technol. 53, 7522–7531 (2019). Google Scholar Wan, D. et al. Iron oxides selectively stabilize plant-derived polysaccharides and aliphatic compounds in agricultural soils. Eur. J. Soil Sci. 70, 1153...
Wetland soil organic matter composition in a Mediterranean semiarid wetland (Las Tablas de Daimiel, Central Spain): Insight into different carbon sequestra... Wetland soils from a Mediterranean semiarid wetland (Las Tablas de Daimiel, Central Spain) were studied to characterize the organic matter (...
Changes in the molecular composition of soil organic matter (SOM) resulting from compost application are not sufficiently known at the molecular scale even though this is a major issue for soil fertility and soil carbon sequestration. Therefore, the present study investigated effects of long-term com...
The largest terrestrial carbon sink on earth is soil carbon stocks. As the climate changes, the rate at which the Earth’s climate warms depends in part on the persistence of soil organic carbon. Microbial turnover forms the backbone of soil organic matt
The clay minerals you find in soil are the result of chemical weathering. Clay minerals are called secondary minerals, because their composition has been altered. Okay. So we have weathered rock, which needs to be combined with organic matter. ...