摘要
近20 a来,宁夏引黄灌区地下水埋深发生了明显的变化,基于宁夏引黄灌区1981-2022年地下水埋深监测数据、宁夏水资源公报等资料,对引黄灌区地下水埋深变化特征及影响因素进行了分析。结果表明:引黄灌区年内地下水埋深双峰双谷与夏春灌、冬灌息息相关,且呈周期性变化;自2000年起随着引黄灌区引水量逐步减少,地下水埋深呈逐步增大趋势,其中2018年以后地下水埋深下降速率变大;引黄灌区农业灌溉引水量减少,是引起引黄灌区地下水埋深逐步增大的主要因素;地下水埋深增大将逐步对灌区生态绿洲、土壤盐渍化及湖泊湿地等产生影响。
In the past 20 years,significant changes have occurred in the groundwater depth in the Yellow River Irrigation Area of Ningxia.Based on the monitoring data of groundwater depth in the Yellow River Irrigation Area of Ningxia from 1981 to 2022,as well as the Bulletin of Water Resources in Ningxia and other materials,the variation characteristics and influencing factors of the groundwater depth in the Yellow River Irrigation Area have been analyzed.The results show that the double peaks and double valleys of the groundwater depth within a year in the Yellow River Irrigation Area are closely related to summer and spring irrigation and winter irrigation,and they change periodically.Since 2000,with the gradual reduction of the water diversion volume in the Yellow River Irrigation Area,the groundwater depth has been gradually increasing,and the rate of decrease in the groundwater depth has become larger after 2018.The reduction of the water diversion volume for agricultural irrigation in the Yellow River Irrigation Area is the main factor causing the gradual increase in the groundwater depth in the Yellow River Irrigation Area.The increase in the groundwater depth will gradually have an impact on the ecological oases,soil salinization,lake wetlands,etc.in the irrigation area.
作者
李岩
侯峥
陈玉春
LI Yan;HOU Zheng;CHEN Yu-chun(Ningxia Hui Autonomous Region Hydrology and Water Resources Monitoring and Early Warning Center,Yinchuan,Ningxia 750004,China)
出处
《地下水》
2025年第5期57-59,140,共4页
Ground water
基金
宁夏回族自治区重点研发项目(2024BEG02005)。
关键词
地下水埋深
引黄灌区
影响因素
生态绿洲
土壤盐渍化
groundwater depth
Yellow River Irrigation Area
influencing factors
ecological oases
soil salinization
