| 引用本文: | 贾易周,刘子西,唐莲.基于系统动力学的青铜峡灌区农业用水效率调控研究[J].灌溉排水学报,0,():-. |
| JIAYIZHOU,LIUZIXI,TANGLIAN.基于系统动力学的青铜峡灌区农业用水效率调控研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| [目的]通过计算青铜峡灌区主要粮食作物的蓝、绿水足迹进行分析并建立相关系统动力学模型,研究青铜峡灌区内的农业用水效率,对影响其水资源利用效率的可变因素进行调控,提出合理有效的节水政策。[方法]使用基于作物蒸发蒸腾量的方法计算青铜峡灌区主要粮食作物的蓝、绿水足迹,通过vensim软件建立青铜峡灌区农业用水效率系统动力学模型。[结果]青铜峡灌区的农业种植需水来源主要是灌溉水,形成了以蓝水为主、绿水为辅的生产用水格局,同时当作物需水量被满足时,蓝水足迹和绿水足迹表现出相反的变化趋势；在保证青铜峡灌区内粮食作物蓝水用水量不变的前提下,选取绿水利用系数和灌溉水利用系数为主要参数对模型进行仿真模拟,当绿水利用系数和灌溉水利用系数分别增加时,粮食作物产量均有不同程度的增加；当绿水利用系数和灌溉水利用系数同时增加时,粮食作物产量增加的幅度大于单一系数调整时增加的幅度。[结论]青铜峡灌区农业种植用水应增加对绿水的利用率,通过各种工程或非工程措施提高灌区内的农业用水效率。 |
| 关键词: 水足迹;系统动力学;农业用水效率;青铜峡灌区;灌溉水利用系数 |
| DOI： |
| 分类号:TV213 |
| 基金项目:宁夏自然科学基金(2022AAC03093)；宁夏高等学校一流学科（水利工程学科）项目（NXYLXK2021A03）；宁夏2018重点研发计划项目（2018BEG03008） |
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| Analysis on the regulation of agricultural water use efficiency in Qingtongxia irrigation area based on system dynamics |
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JIAYIZHOU1,2, LIUZIXI1, TANGLIAN1
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1.Ningxia University;2.Xifeng management supervision of soil and water conservation in the yellow river
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| Abstract: |
| This paper uses system dynamics to study the regulation of agricultural water resources in Qingtongxia irrigation area, and analyzes the agricultural water use efficiency in the irrigation area. The system dynamics model was established by using the blue and green water footprints calculated, and the variable factors affecting the water footprint of grain crops in Qingtongxia Irrigation Area were reasonably adjusted. The results showed that: (1) The main source of water demand for agricultural planting in Qingtongxia Irrigation Area is irrigation water, forming a production water pattern with blue water as the main and green water as the supplement. At the same time, when the water demand of crops is met, the blue water footprint and green water footprint show opposite trends; (2) Under the premise of ensuring that the blue water consumption of grain crops in Qingtongxia Irrigation Area remains unchanged, the green water utilization coefficient and the irrigation water utilization coefficient are selected as the main parameters to simulate the model. When the green water utilization coefficient and the irrigation water utilization coefficient increase respectively, the yield of grain crops increases to different degrees; (3) When the green water utilization coefficient and the irrigation water utilization coefficient increase at the same time, the increase in grain crop yield is greater than that when a single coefficient is adjusted. |
| Key words: Water footprint; System Dynamics; Agricultural water efficiency; ;Qingtongxia Irrigation District |
