农业环境科学学报2016，Vol.35Issue(5)：947-954,8.DOI:10.11654/jaes.2016.05.019
滹沱河冲洪积扇地下水硝酸盐含量的空间分布特征及影响因素
Spatial distribution and influencing factors of nitrate content in groundwater of alluvial-pluvial fan of Hutuo River
摘要
Abstract
In order to identify the contamination profiles and spatial distribution of nitrate in the North China Plain, 115 groundwater sam-ples,collected from Hutuo River pluvial fan in Shijiazhuang City, Hebei Province, were analyzed according to the parameters listed in the Quality Standard for Ground Water(GB 14848—1993). Results indicated that the water quality was generally poor. The 64.35% of total samples only met the Class V standards. Nitrate and hardness were the main failed indicators. The sampling sites with poor water quality were mainly located in the two groundwater units in the northwest area. The nitrate concentrations ranged from 0.24 to 440 mg·L-1, with the maximum and the average concentrations being 22 and 3 times higher than the ClassⅢstandard value, respectively. The nitrate concentra-tions spatially decreased from the north-west to the south-east and from shallow to deep stratum of the research area. Hydrogeological con-ditions had an important effect on the distribution of nitrate in groundwater. In addition, the type and distribution of pollution sources also had great contributions. Correlation analysis between chloridion and nitrate, and between total hardness and nitrate indicated that nitrate in the two units of the north-west area came from the discharges of domestic wastewater and livestock and poultry breeding wastewater from the point sources, while nitrate in the other two units located in the south-east area was mainly resulted from the agricultural non-point sources.关键词
硝酸盐/地下水/污染特征/空间分布/滹沱河冲洪积扇Key words
nitrate/groundwater/pollution profile/spatial distribution/alluvial-pluvial fan of Hutuo River分类
资源环境引用本文复制引用
刘琰,乔肖翠,江秋枫,昌盛,朱媛媛,王山军,郑丙辉..滹沱河冲洪积扇地下水硝酸盐含量的空间分布特征及影响因素[J].农业环境科学学报,2016,35(5):947-954,8.基金项目
环保公益性行业科研专项 （）
