martes, 25 de febrero de 2025

Aplicación informática ModERFoRest disponible

La aplicación informática ModERFoRest (Modeling Environmental Requirements for Forest Restoration) se pone a disposición de los usuarios de forma gratuita desde la web de la SECF:

https://secforestales.org/content/aplicacion-informatica-moderforest-disponible

Orientada principalmente a la comunidad científica y técnica, esta herramienta sirve para un buen número de procesos de modelización y cálculo en el campo de la ecología forestal.

La aplicación consta de tres módulos que se integran en un núcleo común y tres herramientas de cálculo de datos.

viernes, 14 de febrero de 2025

Agua, el alma del paisaje

Colaboramos con el proyecto "Agua, el alma del paisaje" de la Fundación Paisaje.


Conoce el proyecto haciendo click aquí.

martes, 11 de febrero de 2025

Properties of Waterlogged Soils Developed on Arkose and Aeolian Sands in an Agro-Silvopastoral System

Una de nuestras últimas publicaciones:

Jiménez-Ballesta, R.; San José, F.J.; Mongil-Manso, J.; Escudero-Campos, L.; Álvarez-Castellanos, M.P.; 2025. Properties of waterlogged soils developed on arkose and aeolian sands in an agro-silvopastoral system. European Journal of Soil Science, e70055. https://doi.org/10.1111/ejss.70055

Enlace a la publicación

Globally speaking, academic research assumes that soils affected by water stagnation have a significant constraint, especially concerning their productivity and environmental benefits. In the surrounding landscape of northern Ávila Province (northern Spanish Central System), where many small farmers and livestock breeders of the region live, there are areas that are periodically flooded. This study examines the impact of hydromorphism on soil features and formation in La Moraña, a region with arkosic and aeolic sands; it also investigates the soil's role in sustainable waterlogged agro-silvopastoral development. The main land uses are agriculture, pastures or pine forests. The soils show acidic to alkaline reaction (pH 5.6 to 9.1), with sandy to loamy textures, and contain moderate to high levels of organic matter (1.7% to 8.0%) and total nitrogen (0.01% to 0.26%) contents. A moderate to medium cation exchange capacity (CEC) (3.13 to 15 cmol kg−1) and high base saturation status (72% to 81%) were observed. In both soil groups (Cambisols and Arenosols), the predominant soil cations were Ca2+ (0.7 to 25.7 cmol kg−1) and Na+ (0.19 to 9.5 cmol kg−1), while K+ was present in minor amounts. Given the nature of the original material, although the carbonate content of the parent material lay below the detection limit, high carbonate contents greater than 25% were observed in certain horizons (Bkg of profiles 1 and 2). Weak gleization was observed in all profiles, with grey colours (light to dark) in the subsurface horizons, denoting some effects of iron reduction, resulting from a dual action of pluviometry and a practically flat topography; and occasionally flooding or water-table rise. In addition, hydromorphic conditions can also develop due to soil compaction. So, the major soil-forming processes are accumulation of organic matter and brunification in drained conditions. While litter formation in conditions of high moisture, and weak gleization against excessive moisture are the dominant processes. La Moraña's soils stay productive through agroforestry and crop rotations, preserving their potential despite their hydromorphic nature.

Soil infiltration rates in mediterranean mountain areas: relationship with soil properties and different land-use

Una de nuestras últimas publicaciones:

Mongil-Manso, J.; Jiménez-Ballesta, R.; Navarro-Hevia, J.; San Martín, R.; 2025. Soil infiltration rates in mediterranean mountain areas: relationship with soil properties and different land-use. European Journal of Forest Research. https://doi.org/10.1007/s10342-025-01757-6

Enlace a la publicación

We determined the soil properties and infiltration rates in 11 plots, including four soil types (Leptosol, Cambisol, Umbrisol and Regosol, according to the FAO criteria), under three different land uses (pine forest, oak forest and scrubland). The study was conducted in a Spanish Central System Mountain under a Mediterranean climate. We tried to quantify the effect of land use (native and reforested forest and scrubland) and soil properties on the steady-state soil infiltration rate because of the limited evidence about soil infiltration in Mediterranean mountains with sandy and acid soils developed on granite rocks. We employed a simple-ring methacrylate infiltrometer method to determine soil infiltration rates. We used correlation and principal component analysis to examine the relationships between soil properties, land uses, and water infiltration. Additionally, a one-way ANOVA model was applied to identify differences between vegetation types. Soil infiltration rates in the pine forest (891.9 mm·h-1) and the oak forest (509.0 mm·h-1) were better than those in the scrubland (178.4 mm·h-1). Our results are in agree with the main results in the scientific literature. Factors such as sand content (R = 0.71, p-value = 0.02) or electrical conductivity (salt content indicator; R = 0.81, p-value = 0.00) were positively related to soil infiltration, while clay was negatively related (R = -0.69, p-value = 0.02). Results show forest cover improves soil infiltration. This effect is strongly related to hydrological ecosystem services, which may be of interest for decision-making in natural environment management, especially for soil and water conservation.

Assessment of infiltration and erosion rates in Mediterranean reservoirs’ catchments through rainfall simulation

Uno de nuestros últimos artículos:

Mongil-Manso, J.; Patino-Alonso, C.; Nespereira-Jato, J.; Molina, J.-L.; Espejo, F.; Díez-Castro, M.-T.; Zazo, S.; Silla, F.; 2025. Assessment of infiltration and erosion rates in Mediterranean reservoirs´ catchments through rainfall simulation. International Journal of Sediment Research. https://doi.org/10.1016/j.ijsrc.2025.01.003.

Enlace a la publicación

The land use and vegetation type of a reservoir's catchment substantially affect the hydrological processes of soil infiltration and runoff. They also act as drivers or constraints for erosive processes. All the previous processes influence the amount of water and sediment that reach the reservoir and affect its functioning. This study is mainly aimed to improve the knowledge of these processes in southeastern Spain by means of experimental rainfall simulation and multivariate statistical analysis. The results show that the mean infiltration rate is 1.06 times higher in forests than in shrublands and 1.07 times higher than in olive crops (280.52, 265.02, and 262.08 mm/h, respectively), with mean surface runoff consequently 1.57 times lower in forests than in shrublands and 2.41 times lower than in olive crops (20.81, 32.58, and 50.24 mm/h). Likewise, the sediment concentration in the runs is 5.48 times higher in olive groves (518.43 g/L) than in forests (94.61 g/L) and 2.94 times higher than in shrublands (176.48 g/L). Soil properties and parent material might have a more important effect on the studied variables than the different vegetation types. Furthermore, root systems and the use of tillage on crops could favor infiltration, which would tend to equalize the values of the variables analyzed; but this needs to be demonstrated in future research. The results obtained are of interest for vegetation cover and soils management in reservoirs´ catchments in Mediterranean areas. Furthermore, the current research provides an opportunity to study more specifically the origin of the sediment that reaches the reservoirs, beyond sheet and rill erosion.

viernes, 31 de enero de 2025

Ha fallecido Jesús Anta

Jesús Anta, aunque dedicado a la historia y curiosidades de la ciudad y provincia de Valladolid, escribió varios interesantes libros sobre sistemas hidráulicos tradicionales. El más reciente de ellos publicado hace sólo unos meses. Sirva este post como reconocimiento y homenaje.