| 嘉陵江清风峡断面水体pH值时间序列特征及其影响因素分析 |
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| 引用本文： | 胡翠华,刘守江,杨丹,王旭熙.嘉陵江清风峡断面水体pH值时间序列特征及其影响因素分析[J].四川林业科技,2021(1):47-51. |
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| 作者姓名： | 胡翠华 刘守江 杨丹 王旭熙 |
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| 作者单位： | 西华师范大学国土资源学院;嘉陵江流域研究所 |
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| 基金项目： | 四川省教育厅重点项目(17AZ0373);西华师范大学科研创新团队(CXTD2018-10);西华师范大学英才项目(17YC114)。 |
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| 摘 要： | 以嘉陵江广元段清风峡断面水质调查数据为基础,运用文献法、统计法对清风峡2007—2017年河流水体pH值时间变化特征进行了分析,并探讨其变化的成因及影响结果。(1)清风峡pH值年际变化较小,常年维持在8.21上下波动,水体呈微碱性,总体呈下降趋势。(2)在季节变化上,pH值冬春季节高于夏秋季节,pH均值为春季(8.29)>冬季(8.25)>秋季(8.16)>夏季(8.14)。(3)pH值周变化幅度较小,离散程度低,变化平稳。(4)从pH值季节变化分析可以得出,降水是引起该河段水体pH值变化最显著的因子。pH与DO、CODMN、NH3-N三者间呈负相关关系,表明人类活动在一定程度上引起水体pH值的变化。
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| 关 键 词： | 清风峡 PH值 时间序列特征 相关性分析 |
Time-series Characteristics and Influencing Factors of pH Value in the Qingfeng Gorge Section of the Jialing River from 2007 to 2017 |
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| HU Cuihua,LIU Shoujiang,YANG Dan,WANG Xuxi.Time-series Characteristics and Influencing Factors of pH Value in the Qingfeng Gorge Section of the Jialing River from 2007 to 2017[J].Journal of Sichuan Forestry Science and Technology,2021(1):47-51. |
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| Authors: | HU Cuihua LIU Shoujiang YANG Dan WANG Xuxi |
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| Institution: | (School of Land and Resources,China West Normal University,Nanchong 637000,China;Institute of Jialing River Basin,China West Normal University,Nanchong 637009,China) |
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| Abstract: | Based on the survey data of river water quality in the Qingfeng Gorge section,Guangyuan section of the Jialing River,the temporal characteristics of river water pH value in the Qingfeng Gorge section from 2007 to 2017 were analyzed by literature method and statistical method,and explored the causes and influencing factors.The results showed that:1)The interannual change of the pH value was small in the Qingfeng Gorge,which fluctuated around 8.21 all the year round.The water body was slightly alkaline,showing a downward trend on the whole;2)In terms of seasonal variation,the pH value in winter and spring was higher than that in summer and autumn,and the mean pH value was spring(8.29)>winter(8.25)>autumn(8.16)>summer(8.14);3)The weekly variation of pH value was small,with low dispersion and stable change;4)From the analysis of seasonal variation of pH value,it could be concluded that precipitation was the most significant factor that causeing the change of pH value in the river.There was a significant negative correlation between pH value and DO,CODMN and NH3-N,which indicated that human activities caused the change of pH value of water body to some extent. |
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| Keywords: | The Qingfeng Gorge pH value Time-series Correlation analysis |
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