Hydromorphic soils, hydrology and water quality: spatial distribution and functional modelling at different scales

Effect of the spatial distribution of physical aquifer properties on modelled water table depth and stream discharge in a headwater catchment

“…In saturated conditions, different pedogenic processes (e.g., lixiviation and redox) can induce topographic variation in the physical properties as observed in these studies and others (Curmi et al, 1998). Other kinds of processes have not been investigated.…”

“…The land use is intensive farming, with 32% of the surface area covered by meadows, 30% by maize, 23% by winter cereals and the remainder by leguminous plants, fallows and colza. Intensive soil, hydrologic, agronomic and geologic studies have been undertaken during the past ten years (Bruneau et al, 1995;Crave and Gascuel-Odoux, 1997;Curmi et al, 1998;Franks et al, 1998;Molenat et al, , 2005Molenat et al, , 2008Pauwels et al, 2000). It belongs to the ERO AgrHyS (French Environmental Observatory on transfer time in agricultural catchments), an experimental catchment network for studying the response time of hydro-chemical fluxes to the evolution of agricultural practices (www.inra.fr/ore agrhys).…”

“…Three main formations are identified from the soil surface to the bedrock composed of Brioverian schist: the soil, the unconsolidated weathered bedrock, and the fissured and fractured weathered bedrock. The soils are silty loams, depths ranging from 0.5 to 1.5 m (Curmi et al, 1998). The soil system comprises an upland well-drained domain, with an average saturated hydraulic conductivity of 10 −5 m/s, and a poorly drained bottomland with an average hydraulic conductivity of 10 −6 m/s.…”

“…In these models and most other hillslope models, soil and aquifer properties were assumed to be laterally homogeneous, whereas many field observations show lateral variations in soil depth, porosity and conductivity. These variations are local (Tromp van Meerveld et al, 2007) or linked to topography with respect to soil (Curmi et al, 1998) or weathered materials (Dewandel et al, 2003(Dewandel et al, , 2006. Few modelling studies have investigated the effect of these lateral variations.…”

Humusica 2, article 10: Histic humus systems and forms – Key of classification

“…Both distinctions, fens and bogs on one side, large and small systems on the other, interfere and generate the Histic humus systems we enumerate here down. Please refer to specialized publications for investigations about the processes of formation of these soils, some among many (Bock and Köthe, 2008;Boixadera et al, 2003;Christiansen et al, 2012;Clarke et al, 2003;Curmi et al, 1998Curmi et al, , 1993Ferronato et al, 2016;Hong et al, 2016;Hussain and Swindale, 1970;Jungkunst et al, 2008;Jungkunst and Fiedler, 2007;Kögel-Knabner et al, 2010;Kolli, 2011;Kraus and Aslan, 1993;Kust, 1995;Lange et al, 2011;Licht et al, 2014;Loustau and Toutain, 1987;Mafra et al, 2007;Munch and Ottow, 1983;Nawaz et al, 2014;Ottow and Munch, 1978;Rashid and Schaefer, 1985;Rawls et al, 2003;Spohn et al, 2016;Targulian and Krasilnikov, 2007;Trebitz et al, 2005;Vicca et al, 2009;Vittori Antisari et al, 2016;Well et al, 2003;Winkler et al, 2016), for more detailed field descriptions and soil parameters surveys, or present time challenges involving submerged soils, among many works (Adhikari and Hartemink, 2016;Balks and Zabowski, 2016;Batjes, 2014;Bou Kheir et al, 2010;Canarache et al, 2006;Chaplot et al, 2003…”