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Artikel Jurnal
On the use of analytical and numerical advection‐dispersion solvers for solving Richardson–Richards equation
Abstract Water flow in unsaturated soils is modeled using the Richardson–Richards (RR) equation, a nonlinear partial differential equation. Contaminant transport processes, on the other hand, are modeled using the advection‐dispersion equation (ADE) that combines a hyperbolic term and parabolic…
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Artikel Jurnal
Optimizing soil moisture sensor installation depths and number of sensors for in situ monitoring networks
Abstract Previously, developers of soil moisture monitoring networks have determined how many sensors to use and their installation depths with little objective guidance, which led to heavy reliance on suboptimal past precedents when deploying new networks. One such network, the Oklahoma Hydronet…
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Artikel Jurnal
Field‐scale soil moisture estimation in complex alpine terrain using cosmic‐ray neutron sensors: Biomass correction, vertical extension, and multi‐scale heterogeneity
Abstract Accurate field‐scale soil moisture (SM) monitoring in heterogeneous alpine regions is essential for hydrological modeling and satellite validation yet remains challenging due to scale disparities between point sensors and remote sensing. The cosmic‐ray neutron sensor (CRNS) offers a…
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Artikel Jurnal
Relationship between soil electrical conductivity and water content: A multiscale petrophysical calibration
Abstract Electrical resistivity tomography (ERT) is widely used to study water transfer dynamics in soils, but accurate quantification depends on petrophysical relationships that must be calibrated. Traditionally, calibration is done either in the laboratory on undisturbed samples or directly in…
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Artikel Jurnal
Performance of five common soil moisture sensors using default calibration equations in low‐salinity conditions
Abstract Soil moisture monitoring plays a critical role in water resource management, hydrological modeling, and climate studies, making sensor accuracy and reliability increasingly important. This study evaluates the performance of five soil moisture sensors—the CS655, HydraProbe, TDR‐315N, TEROS…
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Artikel Jurnal
Roadmap for leveraging satellite data to advance soil moisture monitoring in Mainland Southeast Asia
Abstract Soil moisture monitoring is vital for Mainland Southeast Asia (MSEA), a region that plays a pivotal role in global agricultural production. Strong reliance on rain‐fed agriculture, combined with frequent hydroclimatic extremes, makes MSEA one of the world's most climate‐sensitive regions…
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Artikel Jurnal
Soil health assessment on Native American agricultural land in the semiarid southwest
Abstract Soil health assessment tools such as the Soil Management Assessment Framework (SMAF) improve the interpretation of soil health status and functional capacity to guide land management decisions. While SMAF has been used in diverse global environments, it has yet to be applied to Native…
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Artikel Jurnal
A closed‐form equation linking soil moisture and evaporation
Abstract Estimating evaporation from surface soil moisture data poses a persistent challenge for modeling the hydrological cycle. Deriving a physics‐based solution to convert single‐probe soil moisture data into evaporation estimates has always been challenging. Such an equation would enhance…
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Artikel Jurnal
Inverse modeling and in situ soil moisture reveal land‐use impacts on soil hydraulic properties
Abstract Soil hydraulic properties (SHPs) link soil structure with water dynamics by regulating infiltration, retention, drainage, and root‐zone moisture, and they are strongly shaped by land use and land cover change (LULCC). Field and laboratory methods for estimating SHPs under LULCC are…
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Artikel Jurnal
Assessment of soil slurry saturation and slurry infiltration in pig slurry storage ponds using electrical resistivity tomography
Abstract Effective management of pig slurry in semi‐arid settings is critical to protect soils and aquifers. This study integrates multi‐profile electrical resistivity tomography (ERT) compiled into stitched 3D volumes with a calibration based on modified Archie's law derived from laboratory…
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Artikel Jurnal
Research on soil quality evaluation in an impermeable saline‐sodic soil with drip irrigation under cropping of Lycium barbarum L.
Abstract Quantitatively assessing the soil quality (SQ) of saline sodic soil is essential to understand the effects of improving methods and assistance for screening on efficient technologies. The objective of this study was to develop saline‐sodic SQ indices and evaluate the continuation of drip…
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Artikel Jurnal
Network‐wide assessment of soil water content calibration and sensitivity to biomass proxies using cosmic‐ray neutron sensing in the Roaring Fork Basin, Colorado
Abstract Soil water content (SWC) is a key state variable of the climate system but is often uncertain in water balance monitoring, especially in alpine environments. SWC measurements can be challenging in alpine environments due to the topography and rocky soils. In 2022, the US Geological…
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Artikel Jurnal
Understanding the factors (salinity, nitrate, and carbon availability) and mechanisms that control N2O products and nitrate removal patterns in inland saline farmland ditches
Abstract Denitrification, the microbial process by which nitrate (NO3−) in aquatic systems is converted to N2 and N2O, is widely recognized as an effective and environmentally friendly method for mitigating NO3− pollution in water bodies. However, the complex role of salinity, which could…
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Artikel Jurnal
EM‐induced bio‐clogging: Formation evolution and permeability response under variably saturated flow
Abstract The vadose zone is an important yet frequently understudied environment where bio‐clogging occurs during managed aquifer recharge. Understanding the synergistic effects of key hydrodynamic factors—water content (θ) and flow velocity (V)—on biofilm development and permeability reduction is…
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Artikel Jurnal
Modeling per‐ and polyfluoroalkyl substances fate in agricultural soils: Clay and air‐water interface adsorption
Abstract Atmospheric deposition is a key pathway for diffuse per‐ and polyfluoroalkyl substances (PFAS) pollution, making agricultural soils long‐term PFAS reservoirs. To assess PFAS adsorption and vertical transport in the vadose zone of agricultural soils, the agro‐hydrological model Daisy…
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Artikel Jurnal
Performance of eight soil moisture sensors as affected by soil texture and electrical conductivity
Abstract Accurate soil moisture information helps farmers, ranchers, and land managers make informed decisions, and this information often comes from in situ measurements. In situ sensors operate based on a variety of technologies, and there is an ongoing need to determine the accuracy of these…
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Artikel Jurnal
Effects of soil profile configuration‐based weathered coal residue addition on soil water infiltration and evaporation
Abstract Optimizing soil profile configuration is crucial for ensuring food security in arid and semi‐arid regions by regulating soil water distribution. Applying exogenous materials is an effective method to construct functional soil profiles. Most existing studies focused on amending topsoil with…
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Artikel Jurnal
The optimality‐based active region model for fingering flow in the vadose zone: Theory, model validation, and generalization
Abstract Traditional macroscopic models for water flow in the vadose zone often assume local equilibrium within a representative element volume. However, under fingering flow this assumption breaks down on a macroscale involving sub‐grid figuring because local equilibrium does not hold between the…
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Artikel Jurnal
Four years after whole orchard recycling: Effects on soil ecosystem services in a young almond orchard
Abstract In California, assessing the potential ecosystem services provided by soil amended with large quantities of recycled woodchips is essential information for farm biomass management. In this study, we evaluated the impacts of whole orchard recycling (WOR) on soil ecosystem services in a…
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Artikel Jurnal
A regression‐based waveform interpretation model for accurate soil moisture estimation under incomplete time domain reflectometry probe insertions
Abstract Time domain reflectometry (TDR) is widely used and provides accurate estimates of soil moisture when sensor rods are fully inserted into the soil. However, automation of sensor insertions, especially in field conditions, is hindered by inaccuracies caused by possible incomplete sensor rod…