Analysis of percolation and seepage through paddy bunds

Huang, Hsueh-Mei; Liu, Chen‐Wuing; Chen, Shih Kai; Chen, Jui Sheng

doi:10.1016/s0022-1694(03)00228-2

Cited by 53 publications

(46 citation statements)

References 7 publications

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“…The research observed the vertical infiltration through the plough pan and the lateral seepage on sloping land formed into terraces and showed that the higher the position on sloping land was, the greater the potential of water losses was because of higher vertical infiltration and lateral seepage (Tsubo et al, 2005). The study carried out in Taiwan indicates the vertical infiltration and lateral seepage rates of the flat paddy field through the bottom of the ridge were 4.0 and 3.3 mm day −1 respectively with the plow sole underneath, and 8.5 and 4.5 mm day −1 respectively without the plow sole underneath (Huang et al, 2003). Therefore, in the experimental paddy field with a plow sole in this study, the infiltration range of 2.20-12.71 mm day −1 is moderate and credible, which demonstrates the new method for indirectly estimating infiltration of paddy fields in situ is relatively reliable.…”

Section: Discussionmentioning

confidence: 99%

“…It is also an important component for water balance research and pollution load calculating . Infiltration in flooded paddy fields not only occurs vertically downwards, but also flows into the earthen ridges surrounding the fields (Chen and Liu, 2002;Huang et al, 2003). It means infiltration consists of vertical infiltration and lateral seepage.…”

Section: Introductionmentioning

confidence: 99%

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A new method for indirectly estimating infiltration of paddy fields in situ

Wang

et al. 2018

Proc. IAHS

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Abstract. Infiltration is one of the major procedures in water balance research and pollution load estimation in paddy fields. In this study, a new method for indirectly estimating infiltration of paddy fields in situ was proposed and implemented in Taihu Lake basin. Since when there were no rainfall, irrigation and artificial drainage, the water depth variation process of a paddy field is only influenced by evapotranspiration and infiltration (E + F ). Firstly, (E + F ) was estimated by deciding the steady decreasing rate of water depth; then the evapotranspiration (ET) of the paddy field was calculated by using the crop coefficient method with the recommended FAO-56 Penman-Monteith equation; finally, the infiltration of the paddy field was obtained by subtracting ET from (E + F ). Results show that the mean infiltration of the studied paddy field during rice jointing-booting period was 7.41 mm day −1 , and the mean vertical infiltration and lateral seepage of the paddy field were 5.46 and 1.95 mm day −1 respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new method for indirectly estimating infiltration of paddy fields in situ

Wang

et al. 2018

Proc. IAHS

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“…Lateral seepage/percolation is considered as additional field loss because under the bund of field there is no continuous plow pan layer, consequently, the water movement is easy into and down through the bund to underlying water table. Several past studies showed the way of measuring lateral seepage using ponding tests and other water balance experiments such as [35,[39][40][41][42][43].…”

Section: Lateral Seepagementioning

confidence: 99%

“…Several past studies showed the way of measuring lateral seepage using ponding tests and other water balance experiments such as [35,[39][40][41][42][43]. This study assumes that the lateral seepage occurs under saturated conditions, and the terminal of seepage should be the groundwater level.…”

Section: Lateral Seepagementioning

confidence: 99%

Modeling of Mixed Crop Field Water Demand and a Smart Irrigation System

Liu

Chang

et al. 2017

Water

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Taiwan average annual rainfall is approximately 2500 mm. In particular, 80% of the rainfall occurs in summer, and most of the heavy rainfall is caused by typhoons. The situation is worsening as climate change results in uneven rainfall, both in spatial and temporal terms. Moreover, climate change has resulted the variations in the seasonal rainfall pattern of Taiwan, thereby aggravating the problem of drought and flooding. The irrigation water distribution system is mostly manually operated, which produces difficulty with regard to the accurate calculation of conveyance losses of channels and fields. Therefore, making agricultural water usage more efficient in the fields and increasing operational accuracy by using modern irrigation systems can ensure appropriate irrigation and sufficient yield during droughts. If agricultural water, which accounts for 70% of the nation's total water usage, can be allocated more precisely and efficiently, it can improve the efficacy of water resource allocation. In this study, a system dynamic model was used to establish an irrigation water management model for a companion and intercropping field in Central Taiwan. Rainfall and irrigation water were considered for the water supply, and the model simulated two scenarios by reducing 30% and 50% of the planned irrigation water in year 2015. Results indicated that the field storage in the end block of the study area was lower than the wilting point under the 50% reduced irrigation water scenario. The original irrigation plan can be reduced to be more efficient in water usage, and a 50% reduction of irrigation can be applied as a solution of water shortage when drought occurs. However, every block should be irrigated in rotation, by adjusting all water gates more frequently to ensure that the downstream blocks can receive the allocated water to get through the drought event.

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“…A one-dimensional simulation algorithm for water flow in aquatic habitats (SAWAH) model developed by ten Berge et al (1992Berge et al ( , 1995 has been extensively used in Asian nation including Taiwan (Liu et al 2001, Huang et al 2003. This model can simulate saturated and unsaturated flow that simultaneously occur in varying soil profile sections in both upland and lowland, rainfed and irrigated environments where soils are layered and hydrology is highly dynamic with variable ground water and volumetric soil water content.…”

mentioning

confidence: 99%

Determination of the magnitudes and values for groundwater recharge from Taiwan's paddy field

Liu

Tan²,

Huang³

2005

Paddy Water Environ

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Flooded paddy fields have many functions, including not only rice production, and ecological and environmental conservation. This work estimates the extent of paddy field infiltration in Taiwan by adopting a one-dimensional Darcy-based soil/water balance model SAWAH (Simulation Algorithm for Water Flow in Aquatic Habitats). A 10cm thick plow sole layer with a hydraulic conductivity of 0.03 cm/day, coupled with the soil texture and irrigation data obtained from 15 irrigation associations, is used to estimate the volumetric amount of annual infiltration in Taiwan. Simulation results from SAWAH indicate that the plow sole layer controls the movement of infiltrated water, with a rate about 1.8 billion cubic meters annually. The estimated infiltration rate of 1.8 billion m 3 /yr comprises more than 40% of the annual infiltration recharge to ground water in Taiwan.

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Analysis of percolation and seepage through paddy bunds

Cited by 53 publications

References 7 publications

A new method for indirectly estimating infiltration of paddy fields in situ

A new method for indirectly estimating infiltration of paddy fields in situ

Modeling of Mixed Crop Field Water Demand and a Smart Irrigation System

Determination of the magnitudes and values for groundwater recharge from Taiwan's paddy field

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