Estimation of regional irrigation water requirement and water supply risk in the arid region of Northwestern China 1989–2010

Shen, Yanjun; Li, Shuo; Chen, Yaning; Qi, Yongqing; Zhang, Shuowei

doi:10.1016/j.agwat.2013.06.014

Cited by 175 publications

(116 citation statements)

References 9 publications

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“…The Kc values reflect the relative water consumption capacity of crop during different growing stages of various crops [7]. In general, the crop coefficient varies during four developing stages: the initial growth period, the rapid development period, mid-maternity and mature period.…”

Section: Crop Coefficientmentioning

confidence: 99%

“…Currently, there are several methods to calculate crop irrigation water requirement, including mathematical model simulation based on ground observation [4,5] and the method by calculating crop water requirement in combination with crop area to determine the regional irrigation water demand [6,7]. Although the former can obtain accurate agricultural water consumption estimation at the farmland scale, it is not suitable for the study of irrigation water demand in a region.…”

Section: Introductionmentioning

confidence: 99%

“…Many previous studies have been conducted to estimate crop water requirement per unit area [8,9,18]. However, few studies focus on irrigation water demand at the regional scale, especially at the basin scale [7].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, the crop water requirement can be obtained by firstly calculating reference crop evapotranspiration (ET0) and then correction by the crop coefficient (Kc). The Penman-Monteith method is widely applied in calculating ET0 [7,14,15], and it is featured by wide range of application and reliable calculation results [13,16,17]. Many previous studies have been conducted to estimate crop water requirement per unit area [8,9,18].…”

Section: Introductionmentioning

confidence: 99%

“…The calculation methods of crop water requirement at the point scale can be summarized as the direct [10,11] and indirect methods [12,13]. Recently, the indirect method is widely adopted to calculate crop water requirement at the point scale in the world [7][8][9][12][13][14][15]. The calculation principle is based on the sufficient irrigation of crops, and the crop water requirement is mainly restricted by meteorological and crop physiological conditions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Risk Assessment of Regional Irrigation Water Demand and Supply in an Arid Inland River Basin of Northwestern China

Guo

et al. 2015

Sustainability

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Irrigation water demand accounts for more than 95% of the total water use in the Kaidu-kongqi River Basin. Determination of the spatial and temporal trends in irrigation water demand is important for making sustainable and wise water management strategies in this highly water deficit region. In this study, the spatial and temporal trends in irrigation water demand as well as net crop irrigation water requirements for nine major crops during 1985-2009 were analyzed by combining the Penman-Monteith equation recommended by Food and Agriculture Organization (FAO) and GIS technology. The regional water stress was also evaluated based on the total irrigation water demand and river discharge at the annual and monthly scales. The results indicated that the annual irrigation water demand in this arid region showed a significant increasing trend during the past 25 years. Total irrigation water demand increased from 14.68 × 10 . The spatial pattern of total irrigation water demand was significantly affected by the changes in cotton growing area. Due to differences in crop planting structure, the monthly average irrigation water demands in Korla City and Yuli County amounted to the peak in July, while those in other regions reached the maximum in June. Although the annual river runoff was much larger than the irrigation water demand, there was serious water deficit during the critical water use period in May and June in some dry years. The presented study OPEN ACCESSSustainability 2015, 7 12959 provides important information for managers and planners on sustainable use of water resources in this arid region.

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Section: Crop Coefficientmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Risk Assessment of Regional Irrigation Water Demand and Supply in an Arid Inland River Basin of Northwestern China

Guo

et al. 2015

Sustainability

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Opportunistic Market‐Driven Regional Shifts of Cropping Practices Reduce Food Production Capacity of China

et al. 2018

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China is facing the challenge of feeding a growing population with the declining cropland and increasing shortage of water resources under the changing climate. This study identified that the opportunistic profit‐driven shifts of planting areas and crop species composition have strongly reduced the food production capacity of China. First, the regional cultivation patterns of major crops in China have substantially shifted during the past five decades. Southeast and South China, the regions with abundant water resources and fewer natural disasters, have lost large planting areas of cropland in order to pursue industry and commerce. Meanwhile, Northeast and Northwest China, the regions with low water resources and frequent natural disasters, have witnessed increases in planting areas. These macroshifts have reduced the national food production by 1.02% per year. The lost grain production would have been enough to feed 13 million people. Second, the spatial shifts have been accompanied by major changes in crop species composition, with substantial increases in planting area and production of maize, due to its low water consumption and high economic returns. Consequently, the stockpile of maize in China has accounted for more than half of global stockpile, and the stock to use ratio of maize in China has exceeded the reliable level. Market‐driven regional shifts of cropping practices have resulted in larger irrigation requirements and aggravated environmental stresses. Our results highlighted the need for Chinese food policies to consider the spatial shifts in cultivation, and the planting crop compositions limited by regional water resources and climate change.

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Irrigation as a Potential Driver for Anomalous Glacier Behavior in High Mountain Asia

Kok

Tuinenburg

Bonekamp

et al. 2018

Geophysical Research Letters

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Many glaciers in the northwest of High Mountain Asia (HMA) show an almost zero or positive mass balance, despite the global trend of melting glaciers. This phenomenon is often referred to as the “Karakoram anomaly,” although strongest positive mass balances can be found in the Kunlun Shan mountain range, northeast of the Karakoram. Using a regional climate model, in combination with a moisture‐tracking model, we show that the increase in irrigation intensity in the lowlands surrounding HMA, particularly in the Tarim basin, can locally counter the effects of global warming on glaciers in Kunlun Shan, and parts of Pamir and northern Tibet, through an increase in summer snowfall and decrease in net radiance. Irrigation can thus affect the regional climate in a way that favors glacier growth, and future projections of glacier melt, which may impact millions of inhabitants surrounding HMA, will need to take into account predicted changes in irrigation intensity.

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Estimation of regional irrigation water requirement and water supply risk in the arid region of Northwestern China 1989–2010

Cited by 175 publications

References 9 publications

Risk Assessment of Regional Irrigation Water Demand and Supply in an Arid Inland River Basin of Northwestern China

Risk Assessment of Regional Irrigation Water Demand and Supply in an Arid Inland River Basin of Northwestern China

Opportunistic Market‐Driven Regional Shifts of Cropping Practices Reduce Food Production Capacity of China

Irrigation as a Potential Driver for Anomalous Glacier Behavior in High Mountain Asia

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