Efficient and Economical Allocation of Irrigation Water under a Changing Environment: a Stochastic Multi‐Objective Nonlinear Programming Model*

Yan, Zehao; Li, Mo; Li, Zhong

doi:10.1002/ird.2523

Cited by 19 publications

(3 citation statements)

References 29 publications

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“…Water use efficiency is measured by the economic benefits generated per unit of water resources. After reviewing relevant literature [29,30] and considering the economic and social development of the planning year, the net efficiency coefficients for industrial and agricultural water supply were determined to be 175.4 yuan/m 3 and 11.2 yuan/m 3 , respectively. It is difficult to quantify the net benefits of domestic and ecological water supply.…”

Section: Model Parameter Settingmentioning

confidence: 99%

Joint Optimization of Urban Water Quantity and Quality Allocation in the Plain River Network Area

Zhao,

Fang,

Wang

et al. 2024

Sustainability

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Cities located in the plain river network area possess abundant water resources. However, due to urbanization and industrialization, there is a severe water shortage problem caused by poor water quality. To overcome this issue, a multi-objective optimal allocation model of water quantity and quality is proposed. The model considers regional water resources, economic, social, and environmental requirements and uses the NSGA-II genetic algorithm for model solution. Furthermore, to evaluate and analyze the degree of spatial equilibrium of regional water resources and how it relates to economic factors, the study uses the spatial equilibrium theory of water resources and the Gini coefficient of water resources. Jingjiang, a city in Jiangsu Province characterized by a typical plain river network area, was selected as the study area. The results of the optimal allocation of water resources in Jingjiang City show that: (1) total water consumption and chemical oxygen demand (COD) emissions for the current planning period are within their respective limits. In addition, the implementation of the water conservation program has resulted in a 5% reduction in total water shortages and a reduction of COD emissions by 1276 tons, (2) the structure of the water supply in Jingjiang City has been optimized; more than 90% of Ⅳ~V surface water is used for agriculture, and the domestic water supply is mainly from transit water, which effectively ensures that high-quality water is used in the domestic water supply, (3) the spatial equilibrium coefficient of water resources per sub-area is between 0.33 and 0.74, indicating an unbalanced or almost unbalanced level. The application of a water conservation program has resulted in the improvement of the spatial equilibrium level of water resources in each sub-area, with an overall spatial equilibrium of 0.64, indicating a more balanced level; the degree of matching of water resources with population, GDP, and land area is at the matching level, (4) according to the Gini coefficient of the distribution of water resources, the plains river network area displays a better match between water resources and economic and social factors of each water receiving area, thanks to its unique geographical location and natural conditions. This study can serve as a decision-making reference for addressing the urban water quality water shortage problem in the plain river network area.

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Section: Model Parameter Settingmentioning

confidence: 99%

Joint Optimization of Urban Water Quantity and Quality Allocation in the Plain River Network Area

Zhao,

Fang,

Wang

et al. 2024

Sustainability

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“…Climate conditions are a significant factor affecting water availability and demand (Loch & Adamson, 2015; Yan et al, 2021). The water available as a result of increased irrigation efficiency includes both regular and saved water.…”

Section: Theoretical Analysismentioning

confidence: 99%

Mediation of the agricultural water rebound effect through climate conditions and types of crop mix

Chai,

Li,

et al. 2023

Irrigation and Drainage

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The water rebound effect is recognized as an impediment to irrigation efficiency enhancement for saving water. This study foregrounds climate conditions and crop mix as two important contexts influencing the relationship between irrigation efficiency and water use (the water rebound effect). Considering China as our study area for conducting an empirical analysis of this relationship, we used the data envelopment analysis (DEA)–Malmquist method and econometric models to examine their impact on the water rebound effect. The results of the analysis revealed that the water rebound effect in China is 69.1%, with humid conditions being the main factor moderating an increase in it. Whereas cash crop cultivation is associated with water conservation under drought conditions, this is not the case under humid conditions. These findings suggest that given the prioritization of food security, policies to reduce cash crops should be introduced, thereby mediating the water rebound effect.

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“…Thus, the findings of this study showed that nearly 38% of the arable land in the project location had irrigation coverage. The quality of irrigation services, agricultural water productivity and efficiency at the farm level throughout the world are not satisfactory (Huang et al, 2007;Koo-Oshima, 2023;Yan et al, 2021). Lovelli et al (2017) identified the following three key factors necessary to improve agricultural water productivity: (a) sustainability in use of environmental resources, (b) food security and (c) growers' income increment due to judicial use of water.…”

Section: Irrigation Service Statusmentioning

confidence: 99%

Exploration of the cropping pattern based on the irrigation water–energy–food and carbon emission nexus

Chand,

Bimali

2023

Irrigation and Drainage

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This study examined the existing cropping patterns, yield, irrigation water and energy use and carbon emission responses to explore the best cropping pattern based on the optimum water–energy–food and carbon emission nexus. The study consisted of field visits, questionnaire surveys among 510 farmers, 10 key informant interviews, one focused group discussion and subsequent analysis of collected data. The result of the research indicated that the best existing cropping pattern was rice–wheat–no crops with a net benefit of USD 491 ha⁻¹, benefit–cost ratio: 1.33, water use: 8830 m3 ha⁻¹, energy use: 43 GJ ha⁻¹ and carbon emission: 2420 kg CO2‐eq ha⁻¹. This study found spring rice to be the most appropriate agricultural commodity in the third season of the crop calendar and rice–wheat–spring rice, as the recommended cropping pattern in the selected area based on maximum production: 13.3 t ha⁻¹, the largest net income: USD 668 ha⁻¹, the highest benefit‐cost ratio: 1.27 and the least use of energy 802 GJ ha⁻¹ with release of3840 kg CO2‐eq ha⁻¹ of carbon. After applying the recommended cropping pattern of this study, there will be significant growth in the benefit per unit use of water and energy and a substantial reduction in carbon emission per tonne of food production.

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Efficient and Economical Allocation of Irrigation Water under a Changing Environment: a Stochastic Multi‐Objective Nonlinear Programming Model*

Cited by 19 publications

References 29 publications

Joint Optimization of Urban Water Quantity and Quality Allocation in the Plain River Network Area

Joint Optimization of Urban Water Quantity and Quality Allocation in the Plain River Network Area

Mediation of the agricultural water rebound effect through climate conditions and types of crop mix

Exploration of the cropping pattern based on the irrigation water–energy–food and carbon emission nexus

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