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Artikel Jurnal
Comparative evaluation of traditional, machine learning, and deep learning models for estimation of key soil properties using pedotransfer functions in the Indo‐Gangetic Plains
Abstract Direct measurement of soil hydro‐physical properties in the Indo‐Gangetic Plains (IGP) is labor‐intensive and costly, limiting site‐specific water management. This study addresses this gap by developing and validating region‐specific pedotransfer functions (PTFs) for six key properties…
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Artikel Jurnal
Willow rotation rapidly improves key drainage properties of compacted organic soils
Abstract Mechanical methods implemented to solve drainage issues caused by compacted layers in cultivated organic soils have produced only short‐term improvements. Limited research has been conducted on biological methods, particularly the use of plants as biological subsoilers. Consequently, this…
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Artikel Jurnal
Continuous data assimilation for the Richards equation of unsaturated flow: A computational study
Abstract Azouani–Olson–Titi data assimilation (often referred to as AOT, after its authors) is a computationally‐efficient algorithm that has been shown analytically and computationally to recover the true solution for a wide variety of regimes exponentially fast in time, in addition to being…
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Artikel Jurnal
Understanding the potential uses of soil moisture information in the United States
Abstract Soil moisture (SM) is an important component of the hydrological cycle that can impact runoff generation, evapotranspiration, crop growth, and wildfire behavior. Most studies, however, focus on technical aspects in a single sector, which makes it difficult to understand all of the current…
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Artikel Jurnal
Pseudo‐diffusivity characteristic curves for surface–rootzone soil hydrologic connectivity
Abstract Accurate quantification of the rootzone soil moisture (θ) dynamics and hydrologic thresholds is important to advance sustainable agricultural water management and drought monitoring. Various low‐pass filters are popularly used to generate a first‐order approximation of θ, referred to here…
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Artikel Jurnal
Evaluation of 10 soil moisture profile sensors using a sandbox experiment
Abstract Soil moisture profile sensors (SMPSs) are designed to measure the volumetric water content of soil at multiple depths simultaneously. Their vertical installation makes them particularly suitable for frequent relocation, as required for the use during cultivation of field crops. In addition…
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Artikel Jurnal
Statistical and machine learning for improving the utility of soil moisture networks for satellite‐based soil moisture product assessment in the Upper Missouri River Basin
Abstract Surface soil moisture is essential for understanding energy exchange between land and atmosphere. Mesoscale modeling and remote sensing are two methods that can provide useful surface soil moisture information for helping characterize these exchanges. While ground‐based sensors are also…
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Artikel Jurnal
Effects of water table fluctuations on naphthalene degradation: Soil column experiment and modeling
Abstract In soils contaminated with petroleum hydrocarbons (PHCs), water table fluctuations (WTFs) affect the kinetics of PHC biodegradation and the generation and transport of carbon dioxide (CO2) and methane (CH4). In this study, a 300‐day‐long column experiment was conducted to simulate the…
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Artikel Jurnal
Comparing field‐saturated soil hydraulic conductivity determined by the single‐ring pressure infiltrometer and bottomless bucket methods
Abstract Reliable estimates of field‐saturated soil hydraulic conductivity, Kfs, are challenging because results may depend on the measurement method. In this investigation, Kfs values obtained with the single‐ring pressure infiltrometer (PI) and bottomless bucket (BB) methods were compared across…
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Artikel Jurnal
Toward a structured workflow to harmonize soil water content products: A comparative study across different methods
Abstract This study introduces a structured, multi‐step workflow for harmonizing diverse soil water content (SWC) datasets to improve their meaningful comparability while preserving their intrinsic characteristics. The workflow addresses four components: unit, temporal, vertical, and lateral…
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Artikel Jurnal
Influence of weathering on unsaturated electrical conductivity of granitic regolith
Abstract Geoelectrical methods have been increasingly used to characterize critical zone (CZ) subsurface structure and to monitor water dynamics within CZs. To interpret field geoelectrical measurements correctly, one needs to have a mechanistic understanding of the physical properties of the…
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Artikel Jurnal
National Oceanic and Atmospheric Administration Soil Moisture Operational Product System: An overview and data assimilation applications
Abstract National Oceanic and Atmospheric Administration–National Environmental Satellite, Data, and Information Service (NESDIS) developed the Soil Moisture Operational Product System (SMOPS) to serve as a one‐stop shop for all available microwave satellite soil moisture observations. SMOPS also…
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Artikel Jurnal
Investigation and quantification of hydraulic gradient and precipitation effect on flow and solute transport in the capillary fringe and saturated zone
Abstract Although the capillary fringe (CF) zone plays a critical role in water flow and solute transport within porous media, its influence is often neglected in numerical models. In this research, the HYDRUS‐2D model was validated with data from a physical experiment. The calibrated model was…
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Artikel Jurnal
Assessing unfrozen water content using capacitance sensors in frozen soils: A new physics‐based conversion curve
Abstract One of the most widely used techniques to measure the unfrozen water content of cryotic soils is to monitor their apparent dielectric permittivity. Paired with an empirical calibration equation or a dielectric mixing model, this measurement, εeff, gives an estimate of unfrozen water…
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Artikel Jurnal
Stacking machine learning models to estimate soil moisture using gravimetric and in‐field sensed data
Abstract Even though nutrient and irrigation management could be improved by accurate soil moisture monitoring, a cost‐effective approach is not available for obtaining this information. The objective of this study was to use soil‐ and weather‐derived predictors to estimate volumetric water content…
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Artikel Jurnal
Spatial and vertical distribution of redox‐sensitive elements and their controlling factors in deep soils under contrasting land cover in the Gulf Coastal Plains
Abstract Redox processes in soil governs key biogeochemical cycles and influence carbon, nitrogen, and phosphorus dynamics. However, their role in deep vadose zone soils remains poorly understood, particularly in variably saturated environments with heterogeneous hydroclimatic, landscape position…
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Artikel Jurnal
Characterization of peat, limnic, and mineral horizons in Eastern Canada Histosols
Abstract North American populations rely on a supply of fresh produce from drained and cultivated Histosols. However, peat thickness decreases over time due to many soil degradation mechanisms, gradually giving way to limnic and mineral soil materials in the vadose zone, generally viewed as less…
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Artikel Jurnal
Simulating long‐term soil carbon sequestration and wheat productivity under biochar amendments in saline‐irrigated sandy soils
Abstract Improving carbon sequestration in sandy soils under saline irrigation is essential for sustaining agricultural productivity in marginal environments. This study addressed two key questions: (i) can biochar, alone or combined with organic amendments, enhance soil carbon storage and…
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Artikel Jurnal
Effects of integrated use of coffee husk and maize straw biochar‐based fertilizers on maize yields, nutrient uptake and soil properties in southern Ethiopia
Abstract In Ethiopia, the use of fertilizer is low due to high cost and limited availability, leading to low yields. Using organic amendment, such as biochar together with mineral fertilizers could be a more effective solution. A field experiment was conducted in clay‐textured soil with a slightly…
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Artikel Jurnal
Do data from the RISMA soil monitoring network support agricultural modeling requirements?
Abstract The Real‐Time In‐Situ Soil Monitoring for Agriculture (RISMA) network provides soil water and agri‐environmental data for conceptualization, calibration, and validation of remote sensing and modeling products for Canadian agriculture at 32 stations in seven watersheds in Saskatchewan…