基于水量监测的多源灌区灌溉耗水量模拟研究

Simulation of irrigation water consumption in multi-source irrigation area based on water monitoring

目前,多源灌区灌溉耗水量模拟存在精度不高的严重问题,导致无法有效实现多源灌区灌溉耗水量精确测量及水资源的高效利用,而现在常用的SWAT模型水循环模拟结构和水平衡要素的计算不适合多源灌区水循环模拟.在上述问题的基础上,本文提出了在灌区主要水循环节点建立水量测量和监测设施的方法,结合改进的SWAT模型建立水循环模型,模拟灌区农业耗水量.该方法能有效实现多源灌区农业灌溉耗水量的直接测量并与模型计算结合分析.

at present,there is a serious problem of low accuracy in the simulation of irrigation water consumption in multi-source irrigation area,which leads to the inability to effectively realize the accurate measurement of irrigation water consumption and the efficient utilization of water resources in multi-source irrigation area.However,the commonly used SWAT(soil and water assessment tool)model is not suitable for the calculation of water cycle simulation structure and water balance elements in irrigation area Based on the above problems,this paper puts forward the method of establishing water measurement and monitoring facilities at the main water cycle nodes in the irrigation area,and establishes a water cycle model combined with the improved SWAT model to simulate the agricultural water consumption in the irrigation area This method can effectively realize the direct measurement of agricultural irrigation water consumption in multisource irrigation area,and combined with model calculation.