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- Title
Distribution of Winter Wheat Water Footprint in Huang-Huai-Hai Farming Region in Recent 30 Years.
- Authors
ZHAO Mingyu; JIA Hao; SHI Xiaoyu; PAN Yi; HUANG Yuyun; WANG Kaicheng; CHU Qingquan
- Abstract
To quantify the consumption of water resources for winter wheat, the spatial-temporal distribution and variation of water footprint for winter wheat were quantitatively analyzed based on the water footprint theory and method at the county scale in the Huang-Huai-Hai farming region from 1985 to 2015, and the distribution of cold and hot spot of water footprint were analyzed. The results showed that the total water footprint of winter wheat was 1 168.54X108 m³, and its spatial distribution was high in the south and low in the north. The blue water footprint of winter wheat was high in the north and low in the south, while the green water footprint and gray water footprint were high in the south and low in the north. From 1985 to 2015, the total water footprint for winter wheat increased by 54.8%. The blue and green water footprint changed little, while the grey water increased by 29.1%. The spatial distribution of blue, green and grey water footprints decreased in the north and increased in the south. The gravity center of the total water footprint for winter wheat moved to the southwest, while the overall change of which was small. In recent 30 years, the water footprint for winter wheat showed a spatial agglomeration trend in the global and local areas. The hot spot area expanded in the 2.5 sub-zone, and the cold spot area expanded in the 2.2 sub-zone. These results provided scientific basis for optimizing winter wheat distribution and efficient utilization and management of agricultural water resources in Huang-Huai-Hai farming region.
- Subjects
WINTER wheat; AGRICULTURE; WATER management; CENTER of mass; WATER consumption; WATER distribution; ENERGY consumption; WATER supply
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2023, Vol 25, Issue 8, p138
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2022.0090