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NH4+-N、NO2--N和NO3--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.
Abstract
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 fol-lowing results.The excess rates of NH4+-N,NO2--N,and NO3--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.
NETL
NSTL
万方数据