Article
Geosciences, Multidisciplinary
Xiao Bai, Ming'an Shao, Xiaoxu Jia, Chunlei Zhao
Summary: Soil hydraulic parameters are crucial for water flow modeling, biogeochemical processes, and plant growth. This study analyzed the factors strongly correlated with soil hydraulic parameters in the China's Loess Plateau Region (CLPR) and developed models to predict these parameters. The results showed that soil texture, soil depth, mean annual precipitation, slope gradient, slope aspect, and elevation were strongly correlated with soil hydraulic parameters. The established models had higher accuracy compared to the current state-of-the-art in this field. The spatial distribution of soil hydraulic parameters in the CLPR exhibited significant clustering. This research provides empirical evidence for studying soil hydrological processes in the CLPR and other similar regions.
Article
Soil Science
Leonardo Inforsato, Quirijn de Jong van Lier
Summary: Two new polynomials as pedotransfer function (PTF) were proposed to predict the flux-based Field Capacity water content, Theta(FC). The polynomials showed high accuracy in predicting the simulated Theta(FC) values, indicating their potential practical application in predicting water content in soil.
Article
Environmental Studies
Lukasz Borek, Andrzej Bogdal, Tomasz Kowalik
Summary: This study analyzed the values of saturated hydraulic conductivity (Ks) obtained from in situ measurements, laboratory measurements, and models of pedotransfer functions (PTFs). The results showed that in situ measurements were significantly correlated with laboratory tests, while the best match was found between laboratory measurements and the PTF-2 model.
Article
Soil Science
Rudiyanto, Budiman Minasny, Nathaniel W. Chaney, Federico Maggi, Sunny Goh Eng Giap, Ramisah M. Shah, Dian Fiantis, Budi Setiawan
Summary: This study introduces neuroFX, a suite of PTFs developed for estimating soil hydraulic curves based on the FXW model. It offers an uncertainty estimate of hydraulic parameters and outperformed existing PTFs such as ROSETTA and BW in predicting soil water retention and unsaturated hydraulic conductivity curves.
Article
Environmental Studies
Agnieszka Petryk, Edyta Kruk, Marek Ryczek, Lenka Lackoova
Summary: Saturated hydraulic conductivity is a crucial soil parameter that affects surface runoff and water erosion formation. Field and laboratory methods for measuring this parameter are time-consuming and expensive, while empirical methods are simple, quick, and costless. This study compared 15 pedotransfer models to assess their usefulness in determining saturated hydraulic conductivity for highly eroded loess soil. The average values obtained from the analyzed functions ranged greatly between 2.00 center dot 10(-3) and 4.05 center dot 10(0) m center dot day(-1). The results were compared with each other and with values obtained from the field method. The Kazeny-Carman and Zauuerbrej methods showed the best comparability with the field method, while the Seelheim and Furnival-Wilson methods differed significantly.
Article
Soil Science
Xingxing Kuang, Jiu Jimmy Jiao, Jipeng Shan, Zhenlei Yang
Summary: A new modification to the van Genuchten soil water retention model is proposed, aiming to improve the agreement between predicted and measured relative hydraulic conductivity by combining with the Mualem model. The modified model, MVG-BCB, shows significant improvement in predicting relative hydraulic conductivity for soils with varied textures, eliminating sharp drops near saturation.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Engineering, Geological
Wei Shao, Sijie Chen, Meijun Li, Ye Su, Junjun Ni, Jianzhi Dong, Yonggen Zhang, Zongji Yang
Summary: Reliable estimates of soil moisture and pore water pressure for stability analysis of unsaturated landslide deposits are crucial, but current methods have uncertainties due to imperfect information on soil hydraulic properties. This study investigates the effectiveness of reducing the dimensionality of parameter estimation using soil pedo-transfer functions and finds that it significantly improves the reliability of soil hydraulic parameters and subsurface hydrology, which may benefit the development of landslide early-warning systems.
ENGINEERING GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Hans W. Klopp, Francisco A. Arriaga, A. L. M. Daigh, W. F. Bleam
Summary: This study improved the prediction accuracy of soil hydraulic properties on salt affected soils by developing new pedotransfer functions that take into account the influence of soil clay mineralogy and solution composition. The newly developed functions outperformed previous models and can easily predict the response of soils to changes in irrigation water quality.
Article
Geosciences, Multidisciplinary
Antoine Sobaga, Bertrand Decharme, Florence Habets, Christine Delire, Noele Enjelvin, Paul-Olivier Redon, Pierre Faure-Catteloin, Patrick Le Moigne
Summary: This study evaluates the performance of the interactions between soil-biosphere-atmosphere (ISBA) land surface model in simulating soil hydrology and water drainage. The evaluation is done using data from seven lysimeters in two sites in northeastern France. The results show that ISBA performs well in terms of soil volumetric water content and water mass, but some weaknesses appear with the van Genuchten (1980) hydraulic conductivity function near saturation. The study also introduces a new hydraulic conductivity function that improves the simulation of drainage dynamics.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
Article
Water Resources
Ling He, Xiaoqian Duan, Shuwen Ding, Chongfa Cai, Yusong Deng
Summary: This study focused on analyzing Ks in typical granite red soil regions in southern China and found that there is significant spatial variability in Ks in this region. The existing six Ks prediction models were found to be inadequate for southern soils. The best combination of predictors and machine learning algorithms were screened and a high-accuracy prediction model was developed. This study provides a theoretical basis for hydrological research in the granite regions of southern China.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Environmental Sciences
Athanasios Paschalis, Sara Bonetti, Yanran Guo, Simone Fatichi
Summary: This study quantifies the impact of uncertainties in using different pedotransfer functions on ecosystem dynamics. The results show that these uncertainties can affect both hydrological and vegetation dynamics, especially in water-limited ecosystems. The uncertainties in evapotranspiration, plant productivity, and vegetation structure are around 10% at annual time scales, while uncertainties in runoff and groundwater recharge are one order of magnitude larger.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Yunquan Wang, Jieliang Zhou, Rui Ma, Gaofeng Zhu, Yongyong Zhang
Summary: This paper presents a simple method for predicting soil hydraulic properties in dry conditions, which overcomes the limitations of existing methods. By applying this method to a new soil hydraulic model, more accurate predictions of soil water content and hydraulic conductivity can be achieved.
WATER RESOURCES RESEARCH
(2022)
Article
Geochemistry & Geophysics
Pei Leng, Zhao-Liang Li, Qian-Yu Liao, Yun-Jing Geng, Qiu-Yu Yan, Xia Zhang, Guo-Fei Shang
Summary: This study investigates a practical calibration approach for improving the accuracy of surface soil moisture retrieval using trapezoidal configurations. By analyzing field measurements and remote sensing data from a semi-arid network in Spain, the results show that the calibrated soil pedotransfer functions (PTFs) significantly enhance the estimation of surface soil moisture.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Soil Science
Miaorun Wang, Haojie Liu, Bernd Lennartz
Summary: This study analyzed the spatial variability of hydro-physical properties of peat soils and established pedotransfer functions to estimate hydraulic properties. The results show that soil physical and hydraulic properties exhibit different levels of spatial heterogeneity depending on the peat degradation stage.
Article
Engineering, Civil
Shawkat B. M. Hassan, Giovanna Dragonetti, Alessandro Comegna, Asma Sengouga, Nicola Lamaddalena, Antonio Coppola
Summary: The main purpose of this paper is to develop a bimodal pedotransfer function to obtain soil water retention curves and hydraulic conductivity curves. By incorporating aggregate-size distribution, the proposed function improves the prediction accuracy of soil hydraulic properties compared to the traditional unimodal approach.
JOURNAL OF HYDROLOGY
(2022)
Article
Forestry
Rafael Poyatos, Pilar Llorens, Josep Pinol, Carles Rubio
ANNALS OF FOREST SCIENCE
(2008)
Article
Engineering, Chemical
C. Rubio, J. Uche, N. Dejo
Article
Soil Science
C. M. Rubio, P. Llorens, F. Gallart
EUROPEAN JOURNAL OF SOIL SCIENCE
(2008)
Article
Engineering, Civil
Antonio J. Molina, Jerome Latron, Caries M. Rubio, Francesc Gallart, Pilar Llorens
JOURNAL OF HYDROLOGY
(2014)
Article
Engineering, Civil
Amaya Martinez, Javier Uche, Antonio Valero, Carlos Rubio
WATER RESOURCES MANAGEMENT
(2011)