A5069784720- Soil Geostatistics and Mapping
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Soil and Unsaturated Flow
- Historical and socio-economic studies of Spain and related regions
- Groundwater flow and contamination studies
- Soil Management and Crop Yield
- Soil Moisture and Remote Sensing
- Irrigation Practices and Water Management
- Water Resource Management and Quality
- Geophysical and Geoelectrical Methods
- Groundwater and Isotope Geochemistry
- Hydrology and Sediment Transport Processes
- Tree Root and Stability Studies
- Soil Mechanics and Vehicle Dynamics
- Forest ecology and management
- Geophysical Methods and Applications
- Mineral Processing and Grinding
- Horticultural and Viticultural Research
- Water resources management and optimization
- Geochemistry and Geologic Mapping
- Plant Water Relations and Carbon Dynamics
- Aeolian processes and effects
- Heavy metals in environment
- Karst Systems and Hydrogeology
Universidade de Santiago de Compostela
2015-2024
The characterization of vineyard soil is a key issue for crop management, which directly affects the quality and yield grapes. However, traditional laboratory analysis properties tedious both time cost consuming, not suitable precision viticulture. For this reason, fast convenient technique needed assessment management. Here, spectroscopy appears as alternative to assist analysis. This work focuses on estimating by spectroscopy. Our study was carried out using 96 samples collected from three...
Abstract Groundwater availability, management and protection are great challenges for the sustainability of groundwater resources in scattered rural areas Atlantic regions Europe where is only option water supply. This report presents a hydrogeological study coastal granitic area Oia northwestern Spain, which has unique geomorphological features with steep slopes favoring erosion weathered granite. The conceptual model includes: (1) regolith layer, present flat summit mountains; (2) slope...
Abstract. Quantifying groundwater recharge in crystalline rocks presents great difficulties due to the high heterogeneity of underground medium (mainly, fracture network, which determines hydraulic parameters bedrock like conductivity or effective porosity). Traditionally these have been considered very low permeability, and their resources usually neglected; however, they can be local importance when a net well-developed fractures. The current European Water Framework Directive requires an...
Nutrient maps based on intensive soil sampling are useful to develop site-specific management practices. Geostatistical methods have been widely used determine the spatial correlation and range of dependence at different scales. If is detected, modelled semivariograms can then be map interested variable by kriging, an interpolation method that produces unbiased estimates with minimal estimation variance. The objectives this paper were examine distribution micronutrients Cu, Zn, Fe Mn...
Soil properties show a high spatio-temporal variability, affecting productivity and crop quality within given field. In new vineyard plantations, with changes in the initial topographic profile, this variability is exacerbated due to incorporation of soil from different origins qualities. The aim current study was characterize newly established vineyard, delineating zones for site-specific management fertilization. For purpose, apparent electrical conductivity (ECa) first 150 cm measured an...
The apparent soil electrical conductivity (E<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mtext>C</mml:mtext></mml:mrow><mml:mrow><mml:mtext>a</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>) was continuously recorded in three successive dates using electromagnetic induction horizontal...
This study presents a combined application of an EM38DD for assessing soil apparent electrical conductivity (EC ) and dual-sensor vertical penetrometer Veris-3000 measuring veris resistance to penetration (PR). The measurements were made at 6 ha field cropped with forage maize under no-tillage after sowing located in Northwestern Spain. objective was use data from EC improving the estimation PR. First, used determine optimized sampling scheme PR 40 points. Then, correlation analysis showed...
Abstract Soil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft animal‐pulled equipment may also cause compaction, but a huge gap exists on experimental data adequately assess their impacts and, actually, animal traction is an option seen increasing potential contribute sustainable agriculture, especially in mountain areas. This study was conducted the compaction of operations motor tractor and draft animals....
Abstract Soil compaction is a serious problem, which aggravated due to its difficulty locate and reverse. Electrical resistivity tomography (ERT) non-invasive geophysical method that can be used identify compacted areas, soil horizon thickness assess physical properties. This study assesses the relationship between ERT compaction. Data were collected on 4-m transect in fallow plot located at Braganca (Portugal). Measurements performed before after tillage tractor passage. samples different...
A agricultura atual requer a inserção de novas tecnologias que permitam identificação dos padrões solo e planta, possibilitando determinação da sua variabilidade espacial. O objetivo deste trabalho foi determinar relação espacial entre produtividade cana-de-açúcar, condutividade elétrica do medida por indução eletromagnética textura solo. área experimental está localizada em Goiana (Pernambuco, Brasil) (Latitude 07°34’25”S, Longitude 34°55’39”W). experimento conduzido uma 6,5 ha....
A hipótese intrínseca é, normalmente, a mais utilizada por ser menos restritiva; quando comparada com as demais hipóteses da geoestatística exige apenas existência de estacionariedade do semivariograma, sem nenhuma restrição quanto à variância finita. O objetivo deste trabalho foi avaliar dados umidade em um Espodossolo Humilúvico. Os foram coletados transeto contendo 128 pontos, espaçados cada 3 m. conteúdo água no solo determinado nas camadas 0,0-0,2 m, 0,2-0,4 m e 0,4-0,6 análise...
Abstract Water supply deficits in droughts, groundwater pollution and climate change are the main challenges for sustainability of resources from hard-rock aquifers rural areas Galicia (Spain). Here, we address weathered fractured schists Abegondo municipality. The conceptualization hydrogeology study area includes: (1) schist (regolith), (2) decompressed highly layer; (3) An underlying slightly schist. Groundwater flows mostly through regolith rock. Rainfall infiltration is source aquifer...
The objective of this work was to investigate the decay initial surface roughness induced by simulated rainfall under different soil residue cover and compare classical statistical indices with geostatistical parameters. A conventionally tilled loamy low structure stability, thus prone crusting placed at 1 m² microplots. Each microplot received three successive events which bring about cumulative 25 mm, 50 mm 75 65 h-1 intensity. Five treatments without replication were tested corn straw...
Abstract Knowledge of soil loss rates by water erosion under given climate, soil, topography, and management conditions is important for establishing conservation schemes. In Galicia, a region with Atlantic climatic in Spain, field observations over the last decade indicate that interrill, rill ephemeral gully may be an sediment source. The aim this work was to assess concentrated rates, describe types rills gullies determine their origin, evolution importance as sources. Soil surface state...
Hydrological signatures are indices that help to describe the behavior of catchments. These can also be used transfer information from gauged ungauged In this study, different approaches were evaluated determine volumetric runoff coefficients in 18 small/medium experimental catchments Iberian Peninsula and fit calculations based on precipitation data for Using derived 1962 events, rainfall-runoff relationships characterized compared order evaluate various hydrological response patterns....
Soil texture influences many physical and chemical properties that affect fertility productivity. Assessing the spatial distribution of soil is necessary to implement management practices avoid degradation. The objective this study was evaluate usefulness soil's apparent electrical conductivity (ECa), as measured by electromagnetic induction, improve estimation texture. carried out in a 10-ha prairie NW Spain. ECa measurements were used design sampling scheme 80 locations, where samples...
The spatial variability of soil properties can be assessed through concepts scale invariance, fractals and multifractals. aim this study was to characterize the scaling patterns structural heterogeneity general chemical along a short (i.e. 52 m large) transect. Field measurements were carried out at experimental farm CIAM located in Mabegondo, A Coruña, Spain. studied transect marked following land slope, 66 samples collected 0-20 cm depth every 0.8 m. analyzed were: pH (H2O ), organic...