Tesis doctoral de Loaiza Usuga Juan Carlos
The main aim of this work is to study the hydrological dynamics of a mediterranean mountain basin affected by land use changes, by means of the monitoring of soil and surface water. This aim has been reached by measuring and simulating hydric balance components of different soils and under different vegetation types, that expand along water and temperature transition regimes. this research has been done in ribera salada basin (catalan pre pyrenees, ne spain), with an area of 222.5 km2, altitudes between 420 and 2385 m and slopes higher than 20%. The substrate consists of massive calcareous conglomerates, calcilutites and limestones. Mean annual precipitation ranges from 507 to 978 mm. Soils are shallow, calcareous and stony, being most of them inceptisols (typic calciusteps, typic haploustepts) and entisols (typic ustifluvents, typic udorthortents). In the upper and moister part of the basin soil decarbonatation takes place. Forest use is predominant, going from brook forest environments to subalpine and submediterranean vegetation. Agricultural uses are mainly cereals, potatoes and pastures. One of the most important characteristics in this basin is the important soil use changes in the last 50 years, due to the abandonment of farms and traditional crops. eight sites were studied, corresponding to soils under quercus ilex, brook forest, pinus sylvestris, pasture, crops (cereal-potatoes) and pinus uncinata. From 1997 until 2005, soil moisture, run-off, water flow and interception have been monitored. From 2004 on infiltration data has been recorded. Meteorological variables were measured by means of a complete meteorological station, from xac (catalan agrometeorological network). the observed results show the predominance of ustic moisture regimes (sss, 2006), to xeric during the driest years. The models nsm «newhall simulation model» (newhall, 1976) and jsm «jarauta simulation model» (jarauta 1989) were used to model soil moisture and temperature regimes. Ns
Datos académicos de la tesis doctoral «Soil hydrology in the ribera salada catchment (catalan prepyrenees). application of hydrologic models for the estimation of hydrologic transitional regimes«
- Título de la tesis: Soil hydrology in the ribera salada catchment (catalan prepyrenees). application of hydrologic models for the estimation of hydrologic transitional regimes
- Autor: Loaiza Usuga Juan Carlos
- Universidad: Lleida
- Fecha de lectura de la tesis: 29/10/2007
Dirección y tribunal
- Director de la tesis
- Poch Claret Rosa María
- Tribunal
- Presidente del tribunal: jaume Porta casanellas
- eusebi Jarauta bragulat (vocal)
- francesc Gallart gallego (vocal)
- valentijn Pauwels (vocal)