摘要
为了保护山东省临清市地下水环境、调控浅层地下水氮污染,基于Visual MODFLOW软件建立研究区地下水流动模型和地下水溶质运移模型;采用情景分析法对3种典型降雨水平年下6种水氮模式进行模拟。结果表明,研究区地下水位随降雨量的增加而升高,丰水年地下水位最大值较枯水年的升高3 m;浅层地下水氮浓度随降雨量的增加而升高,丰水年地下水中硝态氮和氨氮最大浓度分别是枯水年的2.9、1.5倍;在控制施氮肥总量不变的情况下,年施氮肥6次对比年施氮肥4次,丰水年地下水硝态氮和氨氮最大浓度可降低为32%和33%;单次灌溉水量减少20 mm,可减缓地下水氮元素横向迁移和垂向下渗。
To protect the groundwater environment and regulate nitrogen pollution of shallow groundwater in Linqing city,Shandong province,a groundwater flow model and a groundwater solute transport model were established based on Visual MODFLOW software.Six water and nitrogen models under three typical years of rainfall level were simulated by using scenario analysis.The results show that the groundwater level of the research region increases with the increase of rainfall,and the maximum groundwater level in wet year is 3 m higher than that in dry year.The concentrations of nitrogen in shallow groundwater increases with the increase of rainfall.The maximum concentrations of nitrate nitrogen and ammonia nitrogen in groundwater in wet years are respectively 2.9 times and 1.5 times of those in dry years.Under the control of constant total nitrogen application,the maximum concentrations of nitrate nitrogen and ammonia nitrogen in groundwater can be reduced to 32%and 33%in wet year by applying nitrogen 6 times per year compared with 4 times per year.A single irrigation water amount reduction of 20 mm can slow down the horizontal migration and vertical infiltration of nitrogen in groundwater.
作者
张宏伟
张珊珊
张衍福
刘凯
潘维艳
徐晶
边振
杨姗姗
潘毅
徐征和
ZHANG Hongwei;ZHANG Shanshan;ZHANG Yanfu;LIU Kai;PAN Weiyan;XU Jing;BIAN Zhen;YANG Shanshan;PAN Yi;XU Zhenghe(School of Water Conservancy and Environment,University of Jinan,Jinan 250022,Shandong,China;China Gezhouba Group Survey and Design Co.Ltd.,Wuhan 430022,Hubei,China;Water Conservancy Comprehensive Service Center of Shandong Province,Jinan 250013,Shandong,China;Haihe Huaihe Xiaoqing River Basin Water Conservancy Management Service Center of Shandong Province,Jinan 250014,Shandong,China;Binzhou Hydrographic Bureau,Binzhou 256609,Shandong,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2022年第1期56-64,共9页
Journal of University of Jinan(Science and Technology)
基金
山东省自然科学基金项目(ZR2020QE285)
山东省省级水利科研项目(SDSLKY201803)
山东水土保持学会重点领域创新项目(sdsbxh-2018-04)。
