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Artikel Jurnal
Effect of freeze–thaw cycling on the soil‐freezing characteristic curve of five Canadian soils
Abstract The frozen soil processes and their interaction with the environment in the vadose zone of cold regions is vital in both agricultural and engineering practice applications. In a frozen soil, unfrozen water and pore ice coexist. The relationship between the unfrozen water content and…
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Artikel Jurnal
Evaluation of different methods for gap filling of long‐term actual evapotranspiration time series measured by lysimeters
Abstract Terrestrial evapotranspiration (ET) is the second largest water flux in the global water cycle. It can be measured with different techniques; weighable lysimeters can provide very accurate measurements, and some very long‐term time series exist. However, these lysimeter time series are…
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Artikel Jurnal
Contribution of preferential flow to tile drainage varies spatially and temporally
Abstract Tile drainage of agricultural fields is a conduit for nutrient losses. Preferential flow in the soil can more directly connect surface runoff with tile drainage compared with matrix flow, which may also increase P losses. In this study, water temperature was monitored in surface runoff and…
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Artikel Jurnal
Thermo‐time domain reflectometry to evaluate unsaturated soils contaminated with nonaqueous phase liquids
Abstract Soil and groundwater contamination by nonaqueous phase liquids (NAPLs) has become a serious environmental issue. This study applied the thermo‐time domain reflectometry (TTDR) technique to determine the effects of NAPL contamination on the thermal and electromagnetic properties of…
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Artikel Jurnal
The effect of the top soil layer on moisture and evaporation dynamics
Abstract Understanding the effect of the top soil layer on surface evaporation and water distribution is critical to modeling hydrological systems. However, the dependency of near‐surface soil moisture and fluxes on layering characteristics remains unclear. To address this uncertainty, we…
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Artikel Jurnal
Sensing the electrical properties of roots: A review
Abstract Thorough knowledge of root system functioning is essential to understand the feedback loops between plants, soil, and climate. In situ characterization of root systems is challenging due to the inaccessibility of roots and the complexity of root zone processes. Electrical methods have been…
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Artikel Jurnal
Comparison of evapotranspiration estimates using the water balance and the eddy covariance methods
Abstract The eddy covariance method estimates the energy flux of latent heat for evapotranspiration. However, imbalance between the land surface energy output and input is a well‐known fact. Energy balance closure is most commonly not achieved, and therefore the eddy covariance method potentially…
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Artikel Jurnal
Time‐lapse geophysical assessment of agricultural practices on soil moisture dynamics
Abstract Geophysical surveys are now commonly used in agriculture for mapping applications. High‐throughput collection of geophysical properties such as electrical conductivity (inverse of resistivity) can be used as a proxy for soil properties of interest (e.g., moisture, texture, salinity). Most…
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Artikel Jurnal
Suction cup system‐dependent variable boundary condition: Transient water flow and multicomponent solute transport
Abstract Suction cups are widely used in agricultural and environmental research and monitoring under the hypothesis that the sample chemistry represents the soil pore water solute composition around the cup location. The objective of this study was to analyze the sampling procedures that lead to…
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Artikel Jurnal
Temperature response and brine availability to heated boreholes in bedded salt
Abstract There is a growing need for disposal of high‐level nuclear waste. To reduce uncertainty associated with brine availability to repository excavations in salt formations, a collaboration between Sandia, Los Alamos, and Lawrence Berkeley National Laboratories is performing a series of…
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Artikel Jurnal
Real‐time monitoring of carbon dioxide emissions from a shallow carbon dioxide release experiment
Abstract This study was conducted to analyze CO2 migration from a shallow CO2 release experiment using a continuous soil CO2 flux measurement system. Approximately 1.8 t CO2 was injected from 1 to 30 June 2016 through the point sources with perforated release wells laid at 2.5‐m soil depth. Using…
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Artikel Jurnal
Volume‐related quantification of organic carbon content and cation exchange capacity of macropore surfaces in Bt horizons
Abstract In structured soils, earthworm burrows, root channels, shrinkage cracks, and interaggregate spaces form complex macropore networks relevant for preferential transport, turnover processes, and root growth. Macropore walls are often coated with organomineral material, which determine…
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Artikel Jurnal
Analytical expressions for noncapillary soil water retention based on popular capillary retention models
Abstract Recently, Weber et al. proposed a new model for noncapillary retention of soil water without introducing new parameters. The model is based on the integral of any given saturation function for the capillary part in log space. In the original paper, the integration was carried out…
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Artikel Jurnal
3D mapping of soil organic carbon content and soil moisture with multiple geophysical sensors and machine learning
Abstract Soil organic C (SOC) and soil moisture (SM) affect the agricultural productivity of soils. For sustainable food production, knowledge of the horizontal as well as vertical variability of SOC and SM at field scale is crucial. Machine learning models using depth‐related data from multiple…
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Artikel Jurnal
Variations in water content of soil in apricot orchards in the western hilly regions of the Chinese Loess Plateau
Abstract Large changes in land use and land cover types have been occurring in the hill and gully regions of the Loess Plateau since the end of the 1990s. This study revealed dynamic variations of soil water in different layers of representative land use and land cover types under different annual…
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Artikel Jurnal
A low‐cost environmental chamber to simulate warm climatic conditions
Abstract Environmental chambers are used for a variety of experiments in multiple disciplines but are often prohibitively expensive. In this study, we developed an environmental chamber that allows reliable regulation of temperature and relative humidity in a range typical for warm climatic…
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Artikel Jurnal
Crop growth and soil water fluxes at erosion‐affected arable sites: Using weighing lysimeter data for model intercomparison
Abstract Agroecosystem models need to reliably simulate all biophysical processes that control crop growth, particularly the soil water fluxes and nutrient dynamics. As a result of the erosion history, truncated and colluvial soil profiles coexist in arable fields. The erosion‐affected field‐scale…
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Artikel Jurnal
Revealing soil‐borne hydrogel effects on soil hydraulic properties using a roughness‐triangular pore space model
Abstract Understanding the influence of soil‐borne hydrogels (e.g., bacterial extracellular polymeric substances [EPS] and biofilm or root‐derived mucilage) on soil hydraulic properties is crucial for accurate modeling of flow and transport in porous media. The underlying mechanisms of how…
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Artikel Jurnal
Transdisciplinary soil hydrology
Abstract In this paper, I present an evolutional pathway from disciplinary towards transdisciplinary science and research and offer contemporary examples of interdisciplinary research in soil hydrology. I further explore exciting opportunities that can lead to transdisciplinary research (TDres), as…
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Artikel Jurnal
On the impact of increasing drought on the relationship between soil water content and evapotranspiration of a grassland
Abstract Weighable lysimeters were used to study the relation between soil water content (SWC) and the actual evapotranspiration (ETa) of grassland under two different climate regimes of Rollesbroich and Selhausen but for an identical soil from Rollesbroich. All components of the water balance were…