河间地块浅层地下水“三氮”分布特征及影响因素分析  

Spatial distribution and influencing factors of“Three-Nitrogen”in the shallow groundwater between two Drainage rivers

作　　者：彭志娟 付蕾 马晓伟 PENG Zhi-juan;FU Lei;MA Xiao-wei(Nanchang Key Laboratory of Hydro-geology and High Quality Groundwater Resources Exploitation and Utilization,Nanchang,Jiangxi Province,330095 China;Hydro-geology Brigade of Jiangxi Bureau of Geology,Nanchang,Jiangxi Province,330095 China)

机构地区：[1]南昌市水文地质与优质地下水资源开发利用重点实验室,江西南昌330095 [2]江西省地质局水文地质大队,江西南昌330095

出　　处：《地下水》2024年第5期9-11,共3页Ground water

基　　金：赣地水文试验科(20231C12)。

摘　　要：赣江作为江西省内最大的河流,不仅肩负农业活动供水,也是众多城市饮用水取水地。本文以赣江某河间地块浅层地下水为研究对象,通过野外调查和室内分析结果显示:研究区93组地下水样品NH_(4)^(+)-N、NO_(2)^(-)-N和NO_(3)^(-)-N超标率分别为31.18%、0.00%和7.52%,“三氮”含量变异系数均大于等于0.5,“三氮”空间分布差异大。影响研究区地下水中“三氮”含量主要因素有污染源类型及分布、水化学环境和包气带厚度等。The Ganjiang River is the longest river in Jiangxi Province,which is not only the water intake for agricultural activities,but also the water intake for drinking water in many cities.Taking the shallow groundwater between two drainage rivers in the ganjiang river as research objects,field investigations and laboratory analyses were conducted to determine the following results.The excess rates of NH_(4)^(+)-N,NO_(2)^(-)-N,and NO_(3)^(-)-N in 93 groundwater samples from the research area were 31.18%,0.00%,and 7.52%,and the coefficient of variation of“three-nitrogen”level was greater than or equal to 0.5 in 93 groundwater samples from research area,and the spatial distribution of“three-nitrogen”was great difference.The main factors affecting the“three-nitrogen”level included contaminant types,contaminant distribution、aquatic chemistry,and the thickness of vadose zone.

关 键 词：地下水 三氮 分布特征 影响因素 

分 类 号：P641.12[天文地球—地质矿产勘探]