globalchange  > 气候变化与战略
DOI: 10.5194/hess-22-5111-2018
论文题名:
An improved method for calculating the regional crop water footprint based on a hydrological process analysis
作者: Luan X.-B.; Yin Y.-L.; Wu P.-T.; Sun S.-K.; Wang Y.-B.; Gao X.-R.; Liu J.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期:10
起始页码: 5111
结束页码: 5123
语种: 英语
Scopus关键词: Crops ; Cultivation ; Evapotranspiration ; Groundwater ; Irrigation ; Agricultural productions ; Agricultural water ; Hetao irrigation districts ; Hydrological process ; Hydrological process analysis ; Spatial distribution patterns ; Water consumption ; Water use efficiency ; Water supply ; Helianthus ; Triticum aestivum ; Zea mays
英文摘要: Fresh water is consumed during agricultural production. With the shortage of water resources, assessing the water use efficiency is crucial to effectively manage agricultural water resources. The water footprint is an improved index for water use evaluation, and it can reflect the quantity and types of water usage during crop growth. This study aims to establish a method for calculating the regional-scale water footprint of crop production based on hydrological processes, and the water footprint is quantified in terms of blue and green water. This method analyses the water-use process during the growth of crops, which includes irrigation, precipitation, groundwater, evapotranspiration, and drainage, and it ensures a more credible evaluation of water use. As illustrated by the case of the Hetao irrigation district (HID), China, the water footprint of wheat, corn and sunflowers were calculated using this method. The results show that canal water loss and evapotranspiration were responsible for most of the water consumption and accounted for 47.9 % and 41.8 % of the total consumption, respectively. The total water footprint of wheat, corn and sunflowers were 1380-2888, 942-1774 and 2095-4855 m3 t-1, respectively, and the blue footprint accounts for more than 86 %. The spatial distribution pattern of the green, blue and total water footprints for the three crops demonstrated that higher values occurred in the eastern part of the HID, which had more precipitation and was further away from the irrigation gate. This study offers a vital reference for improving the method used to calculate the crop water footprint. © 2018 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163178
Appears in Collections:气候变化与战略

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作者单位: Luan, X.-B., Institute of Water Saving Agriculture in Arid Regions of China, Northwest A and F University, Yangling, Shaanxi, 712100, China, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, Shaanxi, 712100, China; Yin, Y.-L., Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi, 712100, China; Wu, P.-T., Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, Shaanxi, 712100, China, Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi, 712100, China; Sun, S.-K., Institute of Water Saving Agriculture in Arid Regions of China, Northwest A and F University, Yangling, Shaanxi, 712100, China, Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi, 712100, China; Wang, Y.-B., Institute of Water Saving Agriculture in Arid Regions of China, Northwest A and F University, Yangling, Shaanxi, 712100, China, Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi, 712100, China; Gao, X.-R., Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi, 712100, China; Liu, J., College of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu, 210098, China

Recommended Citation:
Luan X.-B.,Yin Y.-L.,Wu P.-T.,et al. An improved method for calculating the regional crop water footprint based on a hydrological process analysis[J]. Hydrology and Earth System Sciences,2018-01-01,22(10)
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