The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this study we examined the effects of glucose-C on the activities of fungi and bacteria determined by the method of substrate-induced respiration (SIR) in combination with the selective inhibition technique, the immobilized-S and the arylsulphatase (ARS) activity in two calcareous arable and fallow soils. The amounts of glucose-C were added at six doses: 0, 125, 250, 500, 750 and 1000 mg kg ...
Microorganisms participate in soil carbon storage by contributing biomass in the form of refractory microbial cell components. However, despite the important contribution of microbial biomass residues to the stable carbon pool, little is known about how the contribution of these residues to soil carbon storage varies as a function of depth. In this study, we evaluated microbial residue biomarkers...
The fate of organic matter (OM) in large-scale infiltration basins used for wastewater treatment by the soil aquifer treatment (SAT) system was investigated. Measured changes in the organic matter concentrations in the soil profiles of the infiltration basins and detailed long-term records of OM concentrations in the recharged effluent and in the observation wells and recovery wells water, were used...
Land degradation worldwide over several centuries has become a serious problem. This phenomenon has been accentuated in agricultural areas, where the amount of topsoil loss creates a gradual loss of farmland productivity. Ploughing is responsible for tillage erosion which causes more soil movement than natural soil creepage. In fact sediment transport is more rapid using heavy machinery than with...
The partitioning of dissolved organic carbon (DOC) within mineral soils is primarily controlled by adsorption to soil particle surfaces. We compare the theoretical limitations and modeling accuracy of four isotherm approaches to describe DOC partitioning to soil surfaces. We use 52 mineral soil samples to create linear initial mass (IM), non-linear, and Langmuir isotherms, all relating the initial...
During the last decades, the population of cormorants in Northern Europe has grown rapidly due to protection. Their impact on vegetation has been recognized, as many trees containing cormorant colonies have collapsed, but their influence on the soil phosphorus (P) status and related ecological impacts have not been studied in details.In this study, total and plant available P (P Total , P...
Transport-induced changes in the concentrations of NH 4 Cl (Cu E ) and Na-pyrophosphate (Cu P ) extractable Cu in acid soils were studied by using diffusion cells in order to quantify Cu transport by measuring the variation of Cu E and Cu P in a half-cell with no copper added (receiving half-cell). An empirical approach based on the Freundlich equation was used...
Ten soil colloids were obtained from three kinds of Fe-rich (>50 g kg −1 ) subtropical soil parent materials (Basalt, Sandshale, and Quaternary Period Red Earth) collected in nine sites in Guangdong of China. Effect of the Fe-rich soil colloids and adding Fe(II) and oxalic acid on reductive dechlorination transformation of pentachlorophenol (PCP) were studied on colloids interfaces of reaction...
Joint pedological, geochemical, hydrological and geophysical investigations were performed to study the coexistence of saline and freshwater lakes in close proximity and similar climatic conditions in the Nhecolândia region, Pantanal wetlands in Brazil. The saline lakes are concentrically surrounded by green sandy loam horizons, which cause differential hydrological regimes.Mg-calcite, K-silicates,...
Data on the dynamics of dissolved or water extractable organic matter (DOM, WEOM) in soils are often contradicting, which is especially true for arable soils. Since a complex set of soil inherent and environmental factors affects these dynamics, there is still a great need for additional data. Especially DOM results from (arable) field studies and long-term trials are scarce. We sampled the WEOM of...
Despite their shortcomings, choropleth soil maps remain the most widespread source of information on soil resources. Since most nationwide soil surveys were conducted in the second half of the previous century, a need for upgrading emerges. We evaluated the potential of detailed observations made by a mobile, non-invasive proximal soil sensor to upgrade a part of the 1/20,000 choropleth soil map of...
Although, much research has been done on arsenate adsorption by Al (oxy)hydroxides, relatively little is known about the kinetics of arsenate desorption from these (oxy)hydroxides, especially those formed in the presence of organic acids. The desorption kinetics of arsenate adsorbed on Al (oxy)hydroxides, formed under the influence of tannic acid, was investigated using 0.1 and 0.5 mM phosphate at...
The determination of the two-phase flow coefficients (such as the capillary pressure, P c , and relative permeabilities, k rw , k ro ) is of a key importance to model the two-phase flow processes taking place during contaminant transport in subsurface. In the present work, transient immiscible displacement experiments are performed at various flow rates on long disturbed soil...
Two methods for modelling a coregionalization were compared, the traditional parametric linear model of coregionalization (LMCR) and a non-parametric method based on a Fourier transform of the empirical (cross-) correlogram maps. The methods were compared in terms of how well they fit the experimental correlograms, and the prediction quality of their co-kriged estimates. Three datasets were compared,...
The renaissance was an intellectually-rich period following a period of stasis in the medieval period. Something analogous appears to be currently taking place in soil science where novel approaches to thought are combined with a revival of ideas from the past. Renewed interest in agriculture (food, feed, fuel) and numerous publications have brought soils back onto the global research agenda. The...
Intensive cropping with conventional tillage results in a decline of soil organic carbon (SOC) with consequent deterioration of soil physical properties. Some studies indicate that this decline in SOC can be arrested by way of organic manure application and improved nutrient management practices. This study was conducted to find out the long-term effects of inorganic fertilizer, manure and lime application...
In this study a typical grey-brown podzolic soil was amended with different doses of a brown coal-based preparation called Rekulter (R) largely used in Poland. After seven years, soils were analyzed and humic acids (HAs) were extracted both from the control soil and from the amended soils. All HAs were characterized by Fourier transform infrared spectroscopy and fluorescence spectroscopy both in emission,...
The objective of our study was to compare the performance of the empirical best linear unbiased predictor (E-BLUP) with residual maximum likelihood (REML) with that of regression kriging (RK) for predicting soil organic matter (SOM) with the presence of different external drifts. The study was conducted on a 933 km 2 area in Pinggu district of Beijing. Terrain attributes (elevation, slope...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.