| 贵州三岔河流域平寨水库水化学特征及控制因素 |
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| 引用本文： | 蒋翼,周忠发,薛冰清,汪炎林,但雨生,尚梦佳.贵州三岔河流域平寨水库水化学特征及控制因素[J].环境工程,2020,38(2):41-47. |
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| 作者姓名： | 蒋翼 周忠发 薛冰清 汪炎林 但雨生 尚梦佳 |
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| 作者单位： | 1. 贵州师范大学 喀斯特研究院/地理与环境科学学院, 贵阳 550001; |
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| 基金项目： | 国家自然科学基金地区项目“喀斯特石漠化地区生态资产与区域贫困耦合机制研究”;贵州省科学技术基金项目;国家自然科学基金委员会-贵州喀斯特科学研究中心项目“喀斯特筑坝河流水安全评估与调控对策” |
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| 摘 要： | 为研究贵州黔中水利枢纽工程水源地平寨水库的水化学特征及成因，利用变异系数、空间插值和因子分析等方法分析研究区2017-2018年40组库水水样测试结果，并探讨了平寨水库水化学特征的时空分布及水化学演化过程的主要控制因素。研究结果表明:1）库水主要的阴阳离子为HCO3-和Ca2+，水化学类型主要为HCO3--Ca2+型。2）除SO42-和NO3-外，枯水期离子浓度大于丰水期；空间上，离子浓度整体表现为三岔河干流大于各支流，且水公河浓度最小。3）Gibbs图分析表明，研究区水库水化学特征主要受到岩石风化的影响，因子分析表明，对水库水化学组成的影响程度表现为:水岩作用 > 人类活动 > 大气降水。建议对于黔中水利枢纽水源地平寨水库的保护必须控制生活污水的排放、化肥农药的使用以及加强周边区域工矿企业的管理。
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| 关 键 词： | 三岔河 平寨水库 水化学特征 变异系数 空间插值 因子分析 |
| 收稿时间： | 2019-03-08 |
STUDY OF HYDRO-CHEMICAL CHARACTERISTICS AND CONTROL FACTORS IN PINGZHAI RESERVOIR OF SANCHA RIVER BASIN IN GUIZHOU |
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| JIANG Yi,ZHOU Zhong-fa,XUE Bing-qing,WANG Yan-lin,DAN Yu-sheng,SHANG Meng-jia.STUDY OF HYDRO-CHEMICAL CHARACTERISTICS AND CONTROL FACTORS IN PINGZHAI RESERVOIR OF SANCHA RIVER BASIN IN GUIZHOU[J].Environmental Engineering,2020,38(2):41-47. |
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| Authors: | JIANG Yi ZHOU Zhong-fa XUE Bing-qing WANG Yan-lin DAN Yu-sheng SHANG Meng-jia |
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| Affiliation: | 1. Karst Research Institute/Department Geography and Environment Sciences, Guizhou Normal University, Guiyang 550001, China;2. State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550001, China |
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| Abstract: | In order to study hydrochemical characteristics of Pingzhai Reservoir, the water source of Qianzhong Water Conservancy Project, Guizhou, the test data of 40 reservoir water samples in 2017-2018 and spatial-temporal distribution of hydrochemical characteristics and the major controlling factors of hydrochemical evolution process of groundwater, were analyzed by means of variation coefficient, spatial interpolation and factor analysis. The results showed that:1) The major anions and cations in Pingzhai Reservoir were HCO3- and Ca2+, and the main hydrochemistry type was HCO3--Ca2+. 2) Except SO42- and NO3-, the ion concentration in dry period was higher than that in wet period. Spatially, the overall ion concentration was greater than that of tributaries in the main stream of Sancha River, and the concentration of Shuigong River was the minimum. 3) Analysis result by Gibbs chart indicated that hydrochemistry characteristics of reservoir water in the study area was mainly affected by rock weathering, and factor analysis showed that the influence sequence on the chemical composition of the reservoir water was as follows:water-rock interaction > human activity > atmospheric precipitation. For the protection of Pingzhai Reservoir, the water source of Qianzhong Water Conservancy Project, it's necessary to control the discharge of domestic sewage as well as the use of chemical fertilizers and pesticides, and improve the management of industrial and mining enterprises in the surrounding areas. |
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