在滴灌系统下对土壤湿模式尺寸的生态水文建模
Dinesh Kumar Vishwakarma1, Rohitashw Kumar2, Arvind Singh Tomar1
1Department of Irrigation and Drainage Engineering, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, Udham Singh Nagar 263145, India.
Heliyon
|July 24, 2023
概括
准确预测土壤湿尺寸对于高效滴灌至关重要. 李模型在预测潮湿土壤宽度和沙土土壤的垂直前进方面表现出卓越的准确性,优于其他经验方法.
科学领域:
- 农业工程 农业工程
- 土壤科学 土壤科学
- 水文学的水文学
背景情况:
- 设计有效的滴灌系统需要精确地了解水平和垂直的湿土尺寸.
- 影响湿模式的因素包括土壤特性,发射器流速和灌管理.
- 了解土壤水动力学是优化用水效率的关键.
研究的目的:
- 审查现有的模型来预测滴灌灌下的土壤湿化模式.
- 用现场数据评估常见实证模型的性能.
- 确定未来的土壤水动态建模中需要改进的领域.
主要方法:
- 在实地调查中使用了具有不同排放能力 (2,4,8 L/h) 的滴灌系统.
- 五个经验式方程 (Al-Ogaidi, Malek 和 Peters, Amin 和 Ekhmaj, Li, Schwartzman 和 Zur) 进行了统计分析.
- 使用平均绝对误差 (MAE),根平均平方误差 (RMSE) 和确定系数 (R2) 评估模型性能.
主要成果:
- 模型在预测湿土宽度方面表现出最高的准确性 (MAE:0.698厘米,RMSE:0.894厘米,R2:0.970).
- 此外,Li型号在垂直前进方面也表现出色 (MAE: 1.800厘米,RMSE: 1.974厘米,R2: 0.986).
- 统计分析证实了Li模型在其他经过测试的实证方法上的优势.
结论:
- 李实证模型对于预测点源滴灌灌下的沙土泥土中的土壤湿度大小非常有效.
- 精确建模湿模式可以显著提高滴灌系统的设计和效率.
- 进一步的研究应该集中在提炼模型上,以解决复杂的土壤水动态问题,并改进灌管理策略.
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