摘要
【目的】研究广西典型不同地质背景区水库水化学特征的差异性及其对人类活动的响应。【方法】利用2021年8月广西非岩溶区为主的青狮潭水库和以岩溶区为主的大龙洞水库的水化学测试数据,采用Piper三线图、相关性分析等方法分析了2个典型不同地质背景区的水库水化学特征及影响因素。【结果】典型非岩溶水库的青狮潭水库主要的阴阳离子为SO_(4)^(2-)以及Ca^(2+)和Mg^(2+),而大龙洞水库作为典型的岩溶水库,其水化学类型均为Ca-HCO_(3)型,HCO_(3)^(-)和Ca^(2+)是主要的阴阳离子。主要离子呈现一致的空间变化,水库水体的主要离子浓度整体表现为随着水库深度的加深,离子浓度逐渐降低,主要受流量变化的影响。【结论】水库的水化学特征主要源于水库内岩石的分化溶解。而SO_(4)^(2-)、NO_(3)^(-)主要受人类活动以及大气降水的影响,相较而言,大龙洞水库受人类活动影响更为显著。最后针对水库中出现的问题,提出水库水资源保护的建议和措施。
【Background】With the development of China’s economy,the phenomenon of water shortage will become more and more serious,and the amount of water supply in reservoirs will increase day by day,it is of great significance to carry out ecological research on reservoirs in China and improve the water quality of reservoirs.Water chemistry research is an important part of water resources quality evaluation,which is of great significance to the use of water resources,sustainable development,management methods and the construction and protection of ecological environment.【Objective】In order to study the difference of hydrochemical characteristics of reservoirs with different geological backgrounds in Guangxi and their response to human activities,the hydrochemical test data of Qingshitan reservoir and Dalong Dong reservoir,which are mainly non-karst areas,were used in August 2021.【Method】The hydrochemical characteristics and influencing factors of two typical reservoirs with different geological backgrounds were analyzed by using Piper trigram and correlation analysis.【Result】The results showed that the main anions of Qingshitan reservoir,a typical non-karst reservoir,were SO_(4)^(2-)and Ca^(2+)+Mg^(2+),while the hydrochemistry of Dalong Dong reservoir,a typical karst reservoir,was Ca-HCO_(3)type,and HCO_(3)^(-)and Ca^(2+)were the main anions.The main ions showed consistent spatial variation.As the reservoir depth deepens,the main ion concentration of the reservoir water gradually decreased,mainly affected by the change of flow.【Conclusion】The hydrochemical characteristics of the reservoir are mainly derived from the differentiation and dissolution of rocks in the reservoir.While SO_(4)^(2-)and NO_(3)^(-)are mainly affected by human activities and atmospheric precipitation,dalongdong Reservoir is more significantly affected by human activities.Finally,according to the problems in the reservoir,the suggestions and measures of reservoir water resources protection are put forward.
作者
黎力菊
唐湘玲
李子威
LI Liju;TANG Xiangling;LI Ziwei(Guilin University of Technology,Guilin 541000,China)
出处
《灌溉排水学报》
CAS
CSCD
北大核心
2022年第S01期83-89,共7页
Journal of Irrigation and Drainage
基金
广西自然基金项目(2020GXNSFAA297266,2018GXNSFAA050009)
广西钦州市科学技术局社会事业技术研究与推广项目(20189910)
关键词
水化学特征
影响因素
青狮潭水库
大龙洞水库
hydrochemical characteristics
influencing factors
Qingshitan Reservoir
Dalongdong Reservoir
