Optimizing Deficit Irrigation Scheduling Under Shallow Groundwater Conditions in Lower Reaches of Amu Darya River Basin

Akhtar, Fazlullah; Tischbein, Bernhard; Awan, Usman Khalid

doi:10.1007/s11269-013-0341-0

Cited by 43 publications

(20 citation statements)

References 40 publications

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“…This needs a greater irrigation amount to address climate warming which leads to excessive evaporation. 3 /ha, respectively. The irrigation amount in the wet year is smaller than the dry year, and the most in the normal year.…”

Section: Water Consumption Of Maize In Different Months Of Different mentioning

confidence: 97%

“…The interval results provide policy makers with more options, according to preferences and actual conditions in irrigation systems. For instance, taking the normal year as an example, the total water allocation is 4525.9 m 3 /ha applying to the deterministic model, however, policy makers can select any water allocation project from a range (from 4482.7 m 3 /ha to 4569.0 m 3 /ha) adopting an uncertainty model, instead of a deterministic 3 /ha, respectively. The irrigation amount in the wet year is smaller than the dry year, and the most in the normal year.…”

Section: Water Consumption Of Maize In Different Months Of Different mentioning

confidence: 99%

“…Thus, any measures to improve water use efficiency are useful to food production [1,2]. Furthermore, improving irrigation scheduling is one of the most effective ways of increasing irrigation efficiency to cope with the shortage of water resources [3].…”

Section: Introductionmentioning

confidence: 99%

“…The groundwater is shallow, with a depth varying from 1.2 to 3.8 m during the year [29]. Water scarcity is severe, with an annual diverted water volume from the Yellow River of approximately 5 billion m 3 . However, the Yellow River Water Conservancy Commission plans to reduce water diversion with water-saving projects.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Allocation Method of Irrigation Water from River and Lake by Considering the Field Water Cycle Process

Huo

2017

Water

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At present, the shortage of water resources has become a serious constraint to the further development of social economy. The optimal allocation of multi-water resources is valuable for agricultural water management in arid and semi-arid regions. However, traditional deterministic programming does not solve the complex water resources allocation in irrigation systems. Furthermore, previous allocation methods of irrigation water seldom considered the water cycle process, especially for multi-sources of irrigation. In this study, we develop an inexact fuzzy stochastic simulation-optimization programming (IFSSOP) model for the irrigation water optimal allocation of two water sources. The model combines the crop water model and the field water cycle model with an uncertainty optimization model, which considers the contribution of groundwater to crop water consumption. As a case study, the developed model is used in an arid area with two irrigation water sources: a river and a lake. Accordingly, the total optimal allocation irrigation water amounts of river and lake water under different violation probabilities in various hydrological years were obtained. By comparing the IFSSOP model with the IFSSOP model without considering the contribution of shallow groundwater (IFSSOP-NG model), it can be shown that the system benefits of the developed model are higher. With the lake water source from flood water, the region can save 30-34% of the river water, maintaining the original crop water deficit irrigation ratio. Consequently, application of the IFSSOP model in irrigation scheduling will provide effective water allocation patterns to save more water in an arid region with shallow groundwater.

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Section: Water Consumption Of Maize In Different Months Of Different mentioning

confidence: 97%

Section: Water Consumption Of Maize In Different Months Of Different mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimal Allocation Method of Irrigation Water from River and Lake by Considering the Field Water Cycle Process

Huo

2017

Water

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“…Various factors affect the crop water use from shallow groundwater (as shown in a review for different agricultural crops by Ayars et al, 2006). The amount of evapotranspiration is often needed to control irrigation systems at shallow groundwater sites efficiently, as it determines the water consumption (Akhtar et al, 2013;Ayars et al, 1999;Karimov et al, 2014;Yang et al, 2007) or the drainage volume (Hornbuckle et al, 2005;. Ultimately, the yield of agricultural crops depends on the groundwater regime (Liu and Luo, 2011;Mueller et al, 2005;).…”

Section: Introductionmentioning

confidence: 99%

Behavior of water balance components at sites with shallow groundwater tables: Possibilities and limitations of their simulation using different ways to control weighable groundwater lysimeters

Dietrich

Fahle

Seyfarth³

2016

Agricultural Water Management

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Impact of groundwater regimes on water balance components of a site with a shallow water table

Dietrich

Kaiser

2017

Ecohydrology

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The management of shallow water table sites is often the subject of discussion between different interest groups, the most controversial topic being the different target groundwater levels. A good level of knowledge about the effects of the different water levels on the water budget components is a precondition for the development of compromises in well‐balanced water resource management. We used groundwater lysimeters to investigate the impact of different water level regimes on the water balance. The lysimeters were installed directly within a typical shallow water table site and had a specially designed system to control the lower boundary condition. This enabled us to simulate different management options in a realistic way. Our results show increasing evapotranspiration with higher water levels but only if the vegetation is adapted to these conditions. Adaptation may take place within a few years of higher water levels. High water levels in spring are linked to increased water storage. This can help to compensate for the higher evapotranspiration for some weeks but not for the entire season. The meteorological conditions have a large short‐term impact on the water budget, which is difficult to compensate for using long‐term water management strategies or slow‐responding vegetation development. Our results underline the complex ecohydrological dependencies in such site conditions and could be an important basis for the development or improvement of ecohydrological models.

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Optimizing Deficit Irrigation Scheduling Under Shallow Groundwater Conditions in Lower Reaches of Amu Darya River Basin

Cited by 43 publications

References 40 publications

Optimal Allocation Method of Irrigation Water from River and Lake by Considering the Field Water Cycle Process

Optimal Allocation Method of Irrigation Water from River and Lake by Considering the Field Water Cycle Process

Behavior of water balance components at sites with shallow groundwater tables: Possibilities and limitations of their simulation using different ways to control weighable groundwater lysimeters

Impact of groundwater regimes on water balance components of a site with a shallow water table

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