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CYCLES DE VIE DES SOLS DE L’OUEST LAUSANNOIS. Facteurs et acteurs de l’anthropopédogénèse

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The mapping of moisture content, composition and texture of soils is attracting a growing interest, in particular with the goal of evaluating threats to soil quality, such as soil salinization. Fast non-invasive geophysical surveys are often used in this c ...

American Geophysical Union2011

TCA, time compression approximation, is a practical and often quite accurate tool to predict postponding infiltration for field applications. A modified approximation (MTCA) can be used just as easily and, in general, will reduce the error by about 50%. Th ...

American Geophysical Union2011

Effect of temperature on water retention phenomena in deformable soils: theoretical and experimental aspects

Simon Salager

In this paper, a theoretical and experimental investigation of the effect of temperature on water retention phenomena in deformable soils is presented. A general law expressing the change in suction with water content, temperature and void ratio is propose ...

Wiley-Blackwell2010

Anthropogenic nutrient enrichment of mountain grasslands has boosted grasses and fast-growing unpalatable plants at the expense of slow-growing species, resulting in a significant loss in biodiversity. A potential tool to reduce nutrient availability and a ...

2009

Behavior of Unsaturated Aggregated Soil in Oedometric Condition

Lyesse Laloui, Laurent Vulliet, Azad Koliji

Natural and agricultural soils usually possess an aggregated structure; in the sense that they are composed of aggregates and large inter-aggregate pores. Under the natural condition, these soils are usually unsaturated and the large pores are easily drain ...

2009

The fate and transport of As was examined at an industrial site where soil- and groundwater contamination are derived from the application of As2O3 as a herbicide. Application of arsenical herbicides was discontinued in the 1970s and soils in the source ar ...

2009

Carbon, oxygen and nitrogen dynamics in a soil profile: Model development and application

David Andrew Barry, Alessandro Brovelli, Jordi Batlle-Aguilar

In order to meet demands for crops, pasture and firewood, the rate of land use change from forested to agricultural uses steadily increased over several decades, resulting in an increased release of nutrients towards groundwater and surface water bodies. I ...

2009

Factors affecting the dissolution kinetics of volcanic ash soils: Dependencies on pH, CO2, and oxalate

Janet Gordon Hering

Laboratory experiments were conducted with volcanic ash soils from Mammoth Mountain, California to examine the dependence of soil dissolution rates on pH and CO2 (in batch experiments) and on oxalate (in flow-through experiments). In all experiments, an in ...

2004

Lindane and Technical HCH Residues in Indian Soils and Sediments: A Critical Appraisal

Jean-Paul Schwitzguebel, Sylvie Vullioud-Marcacci

Even at low residue concentrations, persistent organic pollutants (POPs) are of increasing concern all over the world. They include numerous organochlorine pesticides, like hexachlorocyclohexane (HCH), known for its toxicity, lipophilic properties and very ...

2004

Assessment of microbial community changes and limiting factors during bioremediation of hydrocarbon-polluted soil with new miniaturized physiological methods

Karin Kaufmann

Due to human activities, organic pollutants are spilled to the environment where they threaten public health, often as contaminants of soil or groundwater. Living organisms are able to transform or mineralize many organic pollutants, and bioremediation tec ...

EPFL2004