Spatio-temporal Variability and Distribution Pattern of Nitrate Content in Drinking Well Water of Northwest Lantian County

Luo Da-cheng; Lu Xin-wei; Suo Hui-juan; Yu Zheng-jun

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Spatio-temporal Variability and Distribution Pattern of Nitrate Content in Drinking Well Water of Northwest Lantian County

- Spatio-temporal Variability and Distribution Pattern of Nitrate Content in Drinking Well Water of Northwest Lantian County
- Bulletin of Soiland Water Conservation Vol. 30, Issue 5, Pages: 75-69(2011)
- 作者机构：
  
  陕西师范大学旅游与环境学院
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- Published：2011
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Luo Da-cheng, Lu Xin-wei, Suo Hui-juan, et al. Spatio-temporal Variability and Distribution Pattern of Nitrate Content in Drinking Well Water of Northwest Lantian County[J]. Bulletin of Soiland Water Conservation, 2011, 30(5): 75-69.
DOI：

Luo Da-cheng, Lu Xin-wei, Suo Hui-juan, et al. Spatio-temporal Variability and Distribution Pattern of Nitrate Content in Drinking Well Water of Northwest Lantian County[J]. Bulletin of Soiland Water Conservation, 2011, 30(5): 75-69. DOI：

摘要

农村居民饮用水主要来自当地未经处理的地下水。测定了蓝田县西北地区居民饮用井水中硝酸盐含量

并采用地统计学方法对该区硝酸盐含量的时空变异及分布规律进行了分析。结果表明

在不同时间和不同区域居民饮用井水中硝酸盐含量存在明显的趋势效应及变异性

且其含量随井深增加而减少;0—40m的硝酸盐污染状况比较严重

尤其是在0—20m硝酸盐污染状况最为严重。空间分析结果发现

硝酸盐浓度较高区域主要分布在河谷阶地上游以及南部的部分塬区。

Abstract

Drinking water in rural areas mainly comes from the local untreated groundwater in northwest Lantian County

Shanaxi Province.The objective of this preliminary research was to investigate the spatiotemporal variation and distribution of nitrate content in drinking well water using geostatistical analysis method on the basis of nitrate content measurements.The results indicate that on the nitrate contents of groundwater varied substantially over different areas and different times and exhibited clear trend effect. Furthermore

the nitrate contents in the water decreased with the well depth.Serious nitrate contamination was found in the water collected from 0—40mdeep well

particularly in the water collected from wells of 0— 20mdepth.The spatial analysis results show that the wells with higher nitrate concentration mainly distributed in the upstream of the river valley and a portion of highlands in the south.

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