Boixadera Jaume
Universitat de Lleida, Medi Ambient i Ciències del Sòl, Faculty Member
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Research Interests: Humanities and Art
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Research Interests: Geography, Expertise, Political Science, Europe, Service, and 5 moreIndicator, Impact, Évaluation, Elevage, and Indicateur
The upper reaches of the Segre river, flowing through the Pyrenees, offers a variety of geomorphic surfaces that allow us to study soil chronosequences. The objective of this work is to widen the knowledge about the main characteristics... more
The upper reaches of the Segre river, flowing through the Pyrenees, offers a variety of geomorphic surfaces that allow us to study soil chronosequences. The objective of this work is to widen the knowledge about the main characteristics and formation processes of some benchmark soils developed on fluvio-glacial, alluvial-fan and terrace materials of Pleistocene and Holocene age related to the Segre river, either siliceous or carbonatic. This knowledge will allow us to identify soil forming processes, commonly found in Mediterranean environments such as carbonate redistribution, clay formation and mobilization and rubefaction, all as functions of parent material and age. Five profiles, ranging from the Lower Pleistocene to the Holocene were classified according to Soil Taxonomy/WRB. The Montferrer profile (Calcic Palexeralf /Calcic Cutanic Luvisol (Chromic) is a deep, partly decarbonated soil, with calcium carbonate accumulation in depth covering glacial features. The Torre del Remei...
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Since the 60’s, many authors have reported the presence of common silt-sized materials in the Ebro valley, on surface formations and positions that have given rise to several interpretations, sometimes contradictory. According to the... more
Since the 60’s, many authors have reported the presence of common silt-sized materials in the Ebro valley, on surface formations and positions that have given rise to several interpretations, sometimes contradictory. According to the references, three main terms are used (gypsiferous silts, loess and flour-like gypsum) applied to silts and fine sands with gypsum accumulations. The two first terms are applied to materials with carbonate contents up to 40-50%, coarse silty to fine sandy textures, and located in different positions. Loess normally appears as thick outcrops on slopes leeward from the main wind direction, with a limited pedogenesis consisting of a partial carbonate mobilisation and gypsum contents between 0 and 30%. The third (gypsum-rich) type has a variable spatial distribution, appearing between limestone layers, along footslopes, outcropping as metric surface formations, or as generalized karstified subsurface accumulations. Their composition is almost 100% silt- to ...
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Research Interests: Geography and Vida Rural
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Agro-hydrological models have increasingly become useful and powerful tools in optimizing water and fertilizer application, and in studying the environmental consequences. Accurate prediction of water dynamics in such models is essential... more
Agro-hydrological models have increasingly become useful and powerful tools in optimizing water and fertilizer application, and in studying the environmental consequences. Accurate prediction of water dynamics in such models is essential for models to produce reasonable results. In this study, detailed simulations were performed for water dynamics of rainfed winter wheat and barley grown under a Mediterranean climate over a 10-year period. The model employed (Yang et al., 2009. J. Hydrol., 370, 177-190) uses easily available agronomic data, and takes into consideration of all key soil and plant processes in controlling water dynamics in the soil-crop system, including the dynamics of root growth. The water requirement for crop growth was calculated according to the FAO56, and the soil hydraulic properties were estimated using peto-transfer functions (PTFs) based on soil physical properties and soil organic matter content. Results show that the simulated values of soil water content ...
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ABSTRACT The full ook is available from the European Soil Portal at the URL: http://eusoils.jrc.ec.europa.eu/esdb_archive/eusoils_docs/esb_rr/n01_EUR16232.pdf
ABSTRACT A detailed cartographic soil inventory was produced with the main objective of quantifying the soil organic carbón content of the soils of the Canalda river basin. Relevant aspects were taken into account for example land use,... more
ABSTRACT A detailed cartographic soil inventory was produced with the main objective of quantifying the soil organic carbón content of the soils of the Canalda river basin. Relevant aspects were taken into account for example land use, climatic gradients, geomorphology and geology. In each pit routine soil physical characteristics were described, but in order to quantify carbon stocks some special measurements were carried out to characterize bulk density and rock fragments. Soil organic carbon was calculated at defined depths and compared between different soils, land uses and altitude. Soil organic carbon changed with depth.
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La superfície regada a Catalunya és d'unes 260.00 ha. aproximadament, la qual constitueix el 26 % de l'àrea conreada i el 8 % de l'àrea total; tot i així, en l'àrea regada es produeix, aproximadament, el 68 % del producte... more
La superfície regada a Catalunya és d'unes 260.00 ha. aproximadament, la qual constitueix el 26 % de l'àrea conreada i el 8 % de l'àrea total; tot i així, en l'àrea regada es produeix, aproximadament, el 68 % del producte final agrari.<br> El pes econòmic de l'àrea regada, la facilitat més gran per introduir noves tecnologies amb una rendibilitat superior
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Maize (Zea mays L.) is a very important crop in many of the irrigated areas of the Ebro Valley (NE Spain). Intensive pig (Sus scrofa domesticus) production is also an important economic activity in these areas, and the use of pig slurry... more
Maize (Zea mays L.) is a very important crop in many of the irrigated areas of the Ebro Valley (NE Spain). Intensive pig (Sus scrofa domesticus) production is also an important economic activity in these areas, and the use of pig slurry (PS) as a fertiliser for maize is a common practise. From 2002 to 2005, we conducted a field
Research Interests: Chemistry, Agronomy, Maize, Nitrogen, Field Trial, and 4 moreGrain Yield, Sus Scrofa, Pig Slurry, and Zea Mays L
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... A los Ingenieros Electrónicos Carolina Acosta Muñoz, Claudia Lucia Cortés Cortés, CarolinaOspina Aguirre y Diego Hernán Peluffo Ordoñez ... A los Ingenieros Civiles Fernando Mejía Fernández, Joan Nathalie Suárez Hincapié y Jorge... more
... A los Ingenieros Electrónicos Carolina Acosta Muñoz, Claudia Lucia Cortés Cortés, CarolinaOspina Aguirre y Diego Hernán Peluffo Ordoñez ... A los Ingenieros Civiles Fernando Mejía Fernández, Joan Nathalie Suárez Hincapié y Jorge Julián Vélez Upegui, por abrirme las ...
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ABSTRACT We are currently seeing a growing demand for natural resource information systems on all scales. Such systems must be useful for solving environmental and agricultural problems of a highly diversified nature. In the case of the... more
ABSTRACT We are currently seeing a growing demand for natural resource information systems on all scales. Such systems must be useful for solving environmental and agricultural problems of a highly diversified nature. In the case of the soil resource, map digitalization is usually the starting point, together with georeferenced data bases of morphological descriptions of profiles and analytical soil data. However, drawing up soil information systems on the basis of new information technologies, are not useful on their own for overcoming various soil related problems affecting modern societies. In all probability, new approaches will be required for drawing up inventories of and mapping the soil resource, as well as a new manner of perceiving the survey object (the soil system). This article proffers a series of reflections on certain problems which currently affect soil survey and soil information system development activities. Some of these problems address issues directly related ...