| 引用本文: | 马晓蕾,宗子雯,张涵,等.宁夏农作物水、土足迹时空演变及其 耦合协调关系研究[J].灌溉排水学报,0,():-. |
| maxiaolei,Zongziwen,Zhanghan,et al.宁夏农作物水、土足迹时空演变及其 耦合协调关系研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】宁夏水资源短缺，降水稀少，水资源时空分布不均。通过对宁夏回族自治区主要农作物在2011-2020年间的水、土足迹及空间耦合关系研究，为农业水资源优化利用提供科学依据，从而为缓解宁夏地区的水资源短缺问题提供对策建议。【方法】运用水足迹、土地足迹、基于耦合度的模型，对宁夏地区主要农作物水足迹与土地足迹的时空演变，以及水-土空间耦合关系进行分析。【结果】（1）宁夏地级市主要农作物10a平均综合水足迹（m3/kg）由高到低排列为：石嘴山市＞银川市＞吴忠市＞中卫市＞固原市，在各地级市中大豆生产水足迹最高，玉米生产水足迹最低；（2）农作物蓝水足迹占比远高于绿水足迹，蓝、绿水足迹最高的农作物均为大豆；（3）农作物生产水足迹变化不明显的是固原市，其余地级市水足迹持续下降，其中银川市下降速度最快；（4）农作物土地足迹空间变化中，石嘴山市和固原市整体呈上升趋势，其余地级市表现为下降趋势，银川市下降速度最快；（5）从农作物水-土耦合度看，小麦和大豆的水-土足迹耦合度变化较大，其余农作物水-土足迹耦合度几乎不变。从地级市看，2010、2015和2020年，固原市农作物水-土耦合度一直处在低水平耦合，其余地级市农作物的水-土足迹耦合度变化明显。【结论】石嘴山市农作物综合水足迹整体较高，应注重优化农作物种植结构，加强农业水资源节约利用；此外应进一步提高宁夏农作物水-土足迹空间耦合度，优化水土资源空间配置。 |
| 关键词: 宁夏；绿水足迹；蓝水足迹；灰水足迹；土地足迹；耦合协调度 |
| DOI： |
| 分类号:F323.21 |
| 基金项目:河南省重点研发与推广专项(222400410283) |
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| SPATIO-TEMPORAL EVOLUTION AND COUPLING COORDINATION RESEARCH OF CROPS WATER AND LAND FOOTPRINTS IN NINGXIA |
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maxiaolei1, Zongziwen2, Zhanghan2, Zhaoyuwei2
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1.Huaiyin Normal University;2.Anyang Normal University
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| Abstract: |
| 【Objective】 Ningxia is short of water resources, with scarce precipitation and uneven distribution of water resources in time and space.Through the study of the water and soil footprint and spatial coupling relationship of major crops in Ningxia Hui Autonomous Region from 2011 to 2020, this paper provides scientific basis for the optimal utilization of agricultural water resources, so as to provide countermeasures and suggestions for alleviating the water shortage problem in Ningxia. 【Methods】 Water footprint, land footprint, and coupling degree based model were used to analyze the spatial-temporal evolution of water footprint and land footprint of major crops in Ningxia, as well as the spatial coupling relationship between water and soil. 【Results】 (1) The 10A average comprehensive water footprint (m3/kg) of major crops in Ningxia was ranked as Shizuishan > Yinchuan > Wuzhong > Zhongwei > Guyuan. The water footprint of soybean production was the highest, while that of corn production was the lowest among all prefecture-level cities. (2) The proportion of blue water footprint of crops was much higher than that of green water footprint, and soybean was the crop with the highest blue and green water footprint. (3) The water footprint of crop production did not change significantly in Guyuan City, while the water footprint of other prefecture-level cities continued to decrease, among which Yinchuan City decreased at the fastest rate. (4) In the spatial change of agricultural land footprint, Shizuishan City and Guyuan City showed an overall upward trend, while other prefecture-level cities showed a downward trend, and Yinchuan City showed the fastest downward trend. (5) From the perspective of the water-soil coupling degree of crops, the water-soil footprint coupling degree of wheat and soybean changed greatly, while the water-soil footprint coupling degree of other crops almost remained unchanged.From the perspective of prefecture-level cities, the water-soil coupling degree of crops in Guyuan city was always at a low level in 2010, 2015 and 2020, and the water-soil footprint coupling degree of crops in other prefecture-level cities changed significantly. 【Conclusion】 The overall comprehensive water footprint of crops in Shizuishan City is high, so we should pay attention to optimizing crop planting structure and strengthening the conservation and utilization of agricultural water resources.In addition, the spatial coupling degree of crop water-soil footprint in Ningxia should be further improved to optimize the spatial allocation of water and soil resources. |
| Key words: Ningxia; green water footprint; blue water footprint; grey water footprint; land footprint; coupling coordination degree |
