Soil water content and water balance in rainfed fields in Northeast Thailand

Moroizumi, Toshitsugu; Hamada, Hiromasa; Sukchan, Somsak; Ikemoto, M.

doi:10.1016/j.agwat.2008.07.007

Cited by 21 publications

(14 citation statements)

References 6 publications

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“…In this formulation, the soil fabric in each resolution cell is assumed to be composed of two compartments, a relatively thin layer at the top and a deep layer. The top layer is assumed to hold 20 % of water stored in the entire soil profile in a resolution cell; this assumption is consistent with the US Geological Survey Curve Number assumptions (e.g., Solomon and Cordery 1984;Dingman 1992;Nishat et al 2007;Moroizumi et al 2009). This depth provides adequate assessment of actual evaporation from the soil profile (e.g., Romano and Giudici 2009).…”

Section: Methods Of Investigationmentioning

confidence: 69%

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Water Budget Assessment within a Typical Semiarid Watershed in the Eastern Mediterranean

Oroud

2015

Environ. Process.

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Adequate evaluation of blue water fluxes in arid and semiarid areas is crucial for operational purposes such as evaluation of rain-fed agriculture, grazing potentials and for designing and construction of water dams. Evapotranspiration, runoff and deep recharge in such catchments are poorly understood due to the lack of meteorological and/or hydrological measurements. Modeling using proper parameterizations would probably be a viable alternative to gauge such resources. The present paper examines the water budget in a typical medium size semiarid watershed located in the mountainous areas in Jordan using a transient model. The watershed was discretized into 1 km side length, and the model was run for six continuous years using a daily time step. Many parameterizations used in the model were based on field measurements carried out in this particular environment where measurements of many hydrometeorological parameters are scarce. Comparison between simulated results and long-term flow observations show that the model performs adequately. Results indicate that evapotranspiration, surface runoff, and deep recharge constitute around 87.5, 7.5 and 5 % of areal precipitation, respectively. Significant runoff occurs over steep terrains where vegetation cover is limited or devoid, implying the production of large quantities of sediments, which would adversely affect water quality and the life span of dams constructed over these catchments.

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Section: Methods Of Investigationmentioning

confidence: 69%

“…Excess water in the deeper layer beyond field capacity is assumed to be lost as deep recharge; this occurs when both soil layers reach their field capacities. Runoff occurs when daily precipitation exceeds soil saturation of the top layer and a retention parameter (e.g., Nishat et al 2007;Moroizumi et al 2009),…”

Section: Methods Of Investigationmentioning

confidence: 99%

Water Budget Assessment within a Typical Semiarid Watershed in the Eastern Mediterranean

Oroud

2015

Environ. Process.

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“…A profile average soil moisture was calculated using depth integration similar to Tromp‐van Meerveld and McDonnell () and Moroizumi et al . () and the total thickness of the unsaturated zone was assumed to be the distance between ground surface and the mean daily water table depth measured by the riparian well colocated with the hillslope location. A daily average Δ S U was generated for use in Equation , and the resulting 1‐D Δ S was used in the daily cumulative, monthly, and seasonal water balances.…”

Section: Water Balance Calculationmentioning

confidence: 97%

“…The first, referred to as the "1-D" method, calculates change in VSMC (Dh) based on hourly measurements from a single hillslope location in each catchment (Figure 2, locations HF T1 and UF T2) instrumented JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION with a cluster of four TDT volumetric soil moisture probes in profile (depths of 12.5, 25, 50, and 90 cm) and connected to a data logger (Environmental Systems Incorporated, ESI). A profile average soil moisture was calculated using depth integration similar to Tromp-van Meerveld and McDonnell (2006) and Moroizumi et al (2008) and the total thickness of the unsaturated zone was assumed to be the distance between ground surface and the mean daily water table depth measured by the riparian well colocated with the hillslope location. A daily average DS U was generated for use in Equation (3), and the resulting 1-D DS was used in the daily cumulative, monthly, and seasonal water balances.…”

Section: Water Balance Calculationmentioning

confidence: 99%

Water Balances of Two Piedmont Headwater Catchments: Implications for Regional Hydrologic Landscape Classification

Dreps

James

Sun

et al. 2014

J American Water Resour Assoc

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In the Piedmont of North Carolina, a traditionally water‐rich region, reservoirs that serve over 1 million people are under increasing pressure due to naturally occurring droughts and increasing land development. Innovative development approaches aim to maintain hydrologic conditions of the undisturbed landscape, but are based on insufficient target information. This study uses the hydrologic landscape concept to evaluate reference hydrology in small headwater catchments surrounding Falls Lake, a reservoir serving Raleigh and the greater Triangle area. Researchers collected one year of detailed data on water balance components, including precipitation, evapotranspiration, streamflow, and shallow subsurface storage from two headwater catchments representative of two hydrologic landscapes defined by differences in soils and topographic characteristics. The two catchments are similar in size and lie within the same physiographic region, and during the study period they showed similar water balances of 26‐30% Q, −4 to 5% ΔS, 59‐65% evapotranspiration, and 9‐10% G. However, the steeper, more elevated catchment exhibited perennial streamflow and nongrowing season runoff ratios (Q/P) of 33%, whereas the flat, low‐lying stream was drier during the growing season and exhibited Q/P ratios of 52% during the nongrowing season. A hydrologic landscape defined by topography and soil characteristics helps characterize local‐scale reference hydrology and may contribute to better land management decisions.

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“…The models apply soil water content and actual evapotranspiration as two important variables for water balance determination in the agricultural land (Moroizumia et al, 2009). While soil moisture content determines the amount of water remaining in the soil profile, the actual evapotranspiration indicates how much water leaves the profile following the evaporation from the bare soil and the transpiration from the plant.…”

Section: Introductionmentioning

confidence: 99%

Application of a Dielectric Measurement Technique for Calculating Water Loss from Two Texture-contrasting Soils Grown with Upland Rice

Hermawan

Pajrina

Sumardi

et al. 2018

TERRA

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Soil water content and water balance in rainfed fields in Northeast Thailand

Cited by 21 publications

References 6 publications

Water Budget Assessment within a Typical Semiarid Watershed in the Eastern Mediterranean

Water Budget Assessment within a Typical Semiarid Watershed in the Eastern Mediterranean

Water Balances of Two Piedmont Headwater Catchments: Implications for Regional Hydrologic Landscape Classification

Application of a Dielectric Measurement Technique for Calculating Water Loss from Two Texture-contrasting Soils Grown with Upland Rice

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