The research work was conducted on eroded soil in the Keroua forest of Saida, Algeria, whose objective is to know changes physicochemical and biological properties soils subjected effect water erosion. samples were taken a depth between 0-10 cm each zone (eroded control zone). Our results show that are most affected by erosion where there significant decrease basal respiration microbial biomass...

Mountains, ocean currents, forests, and swamps have played an important role in regulating global climate for hundreds of millions of years, but the truly novel event of the Cenozoic was the evolution and expansion of grasslands, with their uniquely coevolved grasses and grazers. Neogene expansion of the climatic and geographic range of grasslands at the expense of woodlands is now revealed by ...

Alluvial soils are reservoirs of metal contaminants such as Pb that originate from many different sources and are integrated temporally and spatially through erosional and depositional processes. In this study the source, lability and solubility of Pb were examined in a range of alluvial soils from the middle and lower River Trent and its tributary the River Dove using Pb isotope apportionment ...

A better process understanding of how water erosion influences the redistribution of soil organic carbon (SOC) is sorely needed to unravel the role of soil erosion for the carbon (C) budget from local to global scales. The main objective of this study was to determine SOC redistribution and the complete C budget of a loess soil affected by water erosion. We measured fluxes of SOC, dissolved org...

Abstract The data sources for the study were results of a continuous agrochemical (for 3 cycles) and soil erosion survey soils, as well official statistical data. period was characterized by an increase in content organic matter 0.35%, alkaline hydrolyzable nitrogen 20 mg/kg, pH acidity degree 0.15 units, reduction amount medium acidic soils 16.4%. It found that on poorly eroded decreases 0.4%,...

Potential C and N mineralization and soil microbial biomass C (SMBC) are soil biological properties important in understanding nutrient and organic matter dynamics. Knowledge of soil water content at a matric potential near ®eld capacity is needed to determine these biological properties. The objective of this study was to examine whether adjustment of soil water content to a common level of wa...

Lal et al. have recently argued (1, 2) that restoring soil carbon levels worldwide is important for a number of purposes, including reducing atmospheric CO 2 concentrations. We agree, but we question how much eroded soil C is ultimately delivered to the atmosphere. Previous estimates of the proportion of eroded soil carbon oxidized range from 0% to near 100% (3, 4). We believe that the true val...

Relationships between soils and their position in the landscape have been well established in most parts of the world. Such relationships are useful when mapping soils and geographically identifying soil classes based on a set of diagnostic soil characteristics and horizons. Human infl uence may alter the pattern, and here we report on a series of soilscapes in Wisconsin, USA that have been str...