Cropping pattern optimization considering water shadow price and virtual water flows: A case study of Yellow River Basin in China

Huang, Hongrong; Xie, Pengxuan; Duan, Yiduo; Wu, Pute; Zhuo, La

doi:10.1016/j.agwat.2023.108339

Cited by 11 publications

(2 citation statements)

References 62 publications

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“…Some advocates for water conservation in the Colorado Basin have recommended shifting to cropping systems with lower water intensity (less water consumption per area of irrigated land) [30,60,61]. Yet, other researchers have emphasized shifting to cropping systems with lower blue water footprints to address water scarcity [62][63][64][65][66]. This presents a conundrum for Colorado River Basin water conservation.…”

Section: Discussionmentioning

confidence: 99%

Agricultural Water Footprints and Productivity in the Colorado River Basin

Frisvold,

Duval

2023

Hydrology

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The Colorado River provides water to 40 million people in the U.S. Southwest, with river basin spanning 250,000 square miles (647,497 km2). Quantitative water rights assigned to U.S. states, Mexico, and tribes in the Colorado Basin exceed annual streamflows. Climate change is expected to limit streamflows further. To balance water demands with supplies, unprecedented water-use cutbacks have been proposed, primarily for agriculture, which consumes more than 60% of the Basin’s water. This study develops county-level, Basin-wide measures of agricultural economic water productivity, water footprints, and irrigation cash rent premiums, to inform conservation programs and compensation schemes. These measures identify areas where conservation costs in terms of foregone crop production or farm income are high or low. Crop sales averaged USD 814 per acre foot (AF) (USD 0.66/m3) of water consumed in the Lower Basin and 131 USD/AF (USD 0.11/m3) in the Upper Basin. Crop sales minus crop-specific input costs averaged 485 USD/AF (USD 0.39/m3) in the Lower Basin and 93 USD/AF (USD 0.08 per m3) in the Upper Basin. The blue water footprint (BWF) was 1.2 AF/USD 1K (1480 m3/USD1K) of water per thousand dollars of crop sales in the Lower Basin and 7.6 AF/USD 1K (9374 m3/USD1K) in the Upper Basin. Counties with higher water consumption per acre have a lower BWF.

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Section: Discussionmentioning

confidence: 99%

Agricultural Water Footprints and Productivity in the Colorado River Basin

Frisvold,

Duval

2023

Hydrology

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“…Studies have considered both physical and virtual water systems for optimizing water resource allocation, such as applying bottom-up methods to calculate virtual water for agricultural products 28 , separately calculating virtual water systems through blue and green water 29 , or assessing the physical water system using TOPSIS method 30 or dividing into surface water and groundwater 31 . In contrast, the multiregional input–output model provides a comprehensive industry classification as a complement, clearly showing the differences in virtual water systems across different regions and industries.…”

Section: Introductionmentioning

confidence: 99%

Optimal water resource allocation considering virtual water trade in the Yellow River Basin

Wang,

2024

Sci Rep

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Water can be redistributed physically and virtually. We explored water allocation optimization to mitigate water stresses by constructing a physical–virtual dual water system and optimizing the 1987 Yellow River water allocation scheme. We calculated the virtual water volume, identified the virtual in-basin, out-of-basin, and export water volumes, and compared the total regional water demand (i.e., combined physical and virtual water volumes) with regional water planetary boundaries to optimize basin water allocation schemes. Virtual water accounted for > 90% of the total regional demands, whereas physical flows did not significantly impact them. Moreover, allocation quotas for Qinghai and Inner Mongolia should be reduced by 0.113 and 1.005 billion m3, respectively, for sustainability. Furthermore, improving the efficiency of water-intensive sectors and limiting virtual water outflows from heavy industry to out-of-basin sectors are vital to water intensification. Increased attention should be directed toward physical–virtual water demands than the current focus on supply-oriented water allocation.

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The Impacts of Agricultural Water Pricing on Sustainable Agricultural Production

Mu,

Wang,

Xue

2024

Water Resour Manage

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Regarding the relationship between value, resources, and environmental issues, how to use the principle of economic leverage to manage the demand for agricultural water resources has received increasing research attention. Yet, due to the complexity of how the water economy is structured and to uncertainty in how setting an agricultural water price will affect water demand responses, it is still unclear how to determine a reasonable way to charge for agricultural water. This study investigates the impact of water prices on regional cropping structure, irrigation water use, and environmental sustainability under different increasing price scenarios, using a positive mathematical programming (PMP) model based on GAMS software. The model was run and calibrated using 427 eld survey data from the pilot areas in the Wei River Basin for the 2022 crop year. These pilot areas have been selected for comprehensive reform with regard to agricultural water pricing. Our results show that increasing the agricultural water price leads to the changing of crop planting structure in the study area and to the increase of water price elasticity. Furthermore, when the water price rose 200% and 400%, the pesticide input in site A decreased by 1.71% and 3.40%, respectively, and the fertilizer input in site B decreased by 1.05% and 2.03%, respectively. Therefore, our results support the positive role of implementing water price reform policies in the Wei River Basin, but additional policies are also needed to improve the motivation of farmers to save water.

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Cropping pattern optimization considering water shadow price and virtual water flows: A case study of Yellow River Basin in China

Cited by 11 publications

References 62 publications

Agricultural Water Footprints and Productivity in the Colorado River Basin

Agricultural Water Footprints and Productivity in the Colorado River Basin

Optimal water resource allocation considering virtual water trade in the Yellow River Basin

The Impacts of Agricultural Water Pricing on Sustainable Agricultural Production

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