摘要
为研究流溪河中下游地下水锰的时空分布特征及其影响因素,选取了28个地下水监测井2012~2018年雨季和旱季共392组地下水检测数据,分析了锰的时空分布特征并讨论了影响锰分布的主要因素。结果表明:2012~2018年研究区地下水锰的整体含量较高,但总体上低于广州市和珠江三角洲地区;中游地下水锰的质量浓度和超标率总体上均高于下游,其分布受地势影响较小;基岩裂隙水中锰的质量浓度和超标率总体上均高于松散岩类孔隙水;雨季和旱季锰的质量浓度和超标率相差不大,且均随时间呈下降趋势,其季节分布和年际变化受降雨影响较小;研究区地下水锰的分布总体上主要受酸碱条件和“盐效应”影响。
392 groups of groundwater detection data from 28 groundwater monitoring wells in the middle and lower reaches of Liuxi River in rainy and dry seasons from 2012 to 2018 were selected to analyse spatial and temporal distribution characteristics of manganese and its influencing factors in groundwater.The results showed that the overall content of manganese in groundwater in the study area was high from 2012 to 2018,but it was generally lower than that in Guangzhou City and the Pearl River Delta.The mass concentration and over standard rate of manganese in groundwater in the middle reaches were generally higher than those in the lower reaches,and its distribution was less affected by topography.The mass concentration and over standard rate of manganese in bedrock fissure water were generally higher than that in loose rock pore water.The mass concentration and over standard rate of manganese in rainy and dry seasons had little difference,and both showed a downward trend with time,and its seasonal distribution and interannual variation were less affected by rainfall.The distribution of manganese in groundwater in the study area was mainly affected by acid-base conditions and"salt effect".
作者
庞园
曾慧
张明珠
PANG Yuan;ZENG Hui;ZHANG Mingzhu(Research Institute of Water Science in Guangzhou,Guangzhou 510220,China)
出处
《人民长江》
北大核心
2022年第3期61-67,共7页
Yangtze River
关键词
锰
地下水
时空分布特征
流溪河
水资源保护
manganese
groundwater
temporal and spatial distribution characteristics
water resources protection
Liuxi River
