摘要
通过清水河流域2018年7月和11月的监测数据,结合气候、水文地质背景分析,结果表明:1)氟浓度(F^-)的时间分布呈现7月洪水期小于11月枯水期的特征,反映出流域降雨量及地表径流量对氟化物(F^-)浓度的控制作用明显;2)洪水期氟化物(F^-)浓度支流大于干流,空间上呈现上游大于下游的特点;枯水期干流大于支流,下游大于上游的特点,这与支流汇入产生的叠加效应、流域气候等因素有关;3)相关性分析和聚类分析表明,流域氟化物(F^-)的富集与SO■、K^+、pH、HCO3^-等因素有非常密切的关系,这与流域区域自然环境背景相吻合。
Based on the monitoring data of the Qingshui river basin in July and November,2018,combined with the analysis of climate and hydrogeological background,the temporal and spatial distribution characteristics of fluoride(F^-)and its influencing factors in Qingshui river basin,Ningxia were analyzed.The results showed that:1)The fluorine concentration(F^-)in flood period of July was less than in the dry season of November,reflecting that the rainfall and surface runoff of the basin have obvious control effects on fluoride(F^-)concentration.2)During the flood period,the fluoride(F^-)concentration was larger in effluent than that in the main stream,and that in the upstream is larger than the downstream.In the dry season,the fluoride(F^-)concentration was larger in dry stream than in the tributary,and that in the downstream was larger than the upstream.These phenomena are related to the superposition effect caused by the tributary and the climate of the basin.3)Correlation analysis and cluster analysis showed that the enrichment of fluoride(F^-)in the basin was closely related to SO■,K^+,pH,HCO3^-and other factors,which was consistent with the natural environment background of the basin.
作者
何志润
璩向宁
马正虎
杨蕾
张矞勋
HE Zhirun;QU Xiangning;MA Zhenghu;YANG Lei;ZHANG Yuxun(National Key Laboratory Breeding Base of Land Degradation and Ecosystem Restoration,Ningxia University,Yinchuan 750021,China;Key Laboratory of Northwest Degraded Ecosystem Restoration and Reconstruction,Ministry of Education,Ningxia University,Yinchuan 750021,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2020年第5期169-174,共6页
Journal of Arid Land Resources and Environment
基金
宁夏回族自治区环境保护科学项目(2018007)
宁夏回族自治区西部一流学科建设项目(NXYLXK2017B06)资助.
关键词
清水河
氟化物
时空分布
相关分析
Qingshui river
fluorine
time and space distribution
related analysis
