| 三峡水库低水位运行时干流回水对支流水环境的影响 |
| |
| 引用本文： | 陈紫娟,宋献方,张应华,魏潇,唐瑜,秦文婧.三峡水库低水位运行时干流回水对支流水环境的影响[J].环境科学,2018,39(11):4946-4955. |
| |
| 作者姓名： | 陈紫娟 宋献方 张应华 魏潇 唐瑜 秦文婧 |
| |
| 作者单位： | 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室;中国科学院大学中丹学院;中国科学院大学资源与环境学院;山东省地矿工程勘察院;;中国科学院西北生态环境资...;许昌学院城乡规划与园林学...;贵州师范大学地理与环境科...;中国地质大学环境学院;;云南师范大学旅游与地理科...;西安交通大学经济与金融学...;河南能源化工集团新疆投资...;中国地质大学(武汉)公共...;中国地质大学土地科学技术... |
| |
| 基金项目： | 中国科学院STS计划项目（KFJ-EW-STS-007） |
| |
| 摘 要： | 三峡水库干流回水对支流水环境的影响研究对水库支流富营养化防治及保障水库水质安全具有重要意义.通过2016年8月7～12日三峡水库低水位运行时对库区长江干流和主要支流进行采样和室内分析,初步揭示了三峡库区低水位运行时水库水体的水化学特征和研究了干流回水对主要支流水化学特征的影响.结果表明,对于EC值变化范围,干流为291～336μS·cm~(-1),支流不受干流回水影响水体为183. 7～518μS·cm~(-1),受干流回水影响水体为267～330μS·cm~(-1),接近干流.对于氢氧同位素特征δD值和δ~(18)O值分布范围,干流为-81. 60‰～-75. 16‰和-11. 57‰～-10. 26‰,支流不受干流回水影响水体为-59. 94‰～-43. 67‰和-9. 00‰～-6. 04‰,受干流回水影响水体为-77. 85‰～-50. 75‰和-11. 06‰～-7. 33‰,接近干流,与EC值和主要阴阳离子质量浓度值表现规律一致,表明干流通过回水影响支流水体组成进而影响支流的水化学特征,且支流受干流回水影响程度与支流河口距三峡大坝距离和支流自身流量大小呈负相关.支流不受干流回水影响的水体水化学特征与支流流域属性有关,人口密度大、耕地比例高的支流流域其水质较差.干流回水对水质较优的支流起污染作用,对水质较差的支流起稀释优化作用.
|
| 关 键 词： | 三峡水库 主要支流 干流回水 水化学特征 氢氧同位素特征 土地利用 |
| 收稿时间： | 2018/3/21 0:00:00 |
| 修稿时间： | 2018/4/20 0:00:00 |
Impact of Mainstream Backwater on the Water Environment of the Tributaries of the Three Gorges Reservoir at Low Water Level |
| |
| CHEN Zi-juan,SONG Xian-fang,ZHANG Ying-hu,WEI Xiao,TANG Yu and QIN Wen-jing.Impact of Mainstream Backwater on the Water Environment of the Tributaries of the Three Gorges Reservoir at Low Water Level[J].Chinese Journal of Environmental Science,2018,39(11):4946-4955. |
| |
| Authors: | CHEN Zi-juan SONG Xian-fang ZHANG Ying-hu WEI Xiao TANG Yu and QIN Wen-jing |
| |
| Institution: | Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China;Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China,Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China;School of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China,Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China;Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China,Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China;Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China and Key Laboratory of Water Cycle and the Surface Process, Institute of Geographical Science and Natural Resources, Chinese Academy of Sciences, Beijing 100101, China;Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100190, China |
| |
| Abstract: | |
| |
| Keywords: | Three Gorges Reservoir main tributaries mainstream backwater water chemical characteristics hydrogen and oxygen isotopic characteristics land use |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
