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当前位置: 首页 > 文章 > 三峡库区干—支流作用下草堂河氢氧同位素时空分布的环境意义 节水灌溉 2019 (3) 48-52+58
Position: Home > Articles > The Characteristic of Hydrogen and Oxygen Stable Isotope and Its Environmental Significance between The Mainstream and a Tributary of The Three Gorges Reservoir -a case study of Caotang River Water Saving Irrigation 2019 (3) 48-52+58

三峡库区干—支流作用下草堂河氢氧同位素时空分布的环境意义

作  者：
蔡爱民;王雨春;胡明明;包宇飞;叶振亚;杜鹏程
单  位：
中国水利水电科学研究院水环境研究所;三峡大学;流域水循环模拟与调控国家重点实验室
关键词：
生态水利;氢氧同位素;三峡库区;草堂河;营养盐
摘  要：
为了对三峡水库干—支流水体及营养盐交换的定量估算提供一种快捷有效的方法,对草堂河与三峡水库干流水体进行了氢氧同位素的特征分析,并在此基础上利用二元线性混合模型对水体营养盐交换进行了定量分析。通过对三峡库区典型短小型支流草堂河与临近干流断面氢氧同位素时空分布及水体营养盐含量的测定,估算水库各个运行时期干流对草堂河支流的水体贡献量,进而探讨干流水体对草堂河支流的TP、TN贡献量。结果表明:草堂河来自于干流的水量补给率为96.4%,源头水量补给仅占3.6%;另对邻近长江干流和草堂河支流点位营养盐含量分析显示TP的补给基本来自于干流,且TP、TN全年变化趋势草堂河与邻近长江干流基本一致。支流源头TP要明显低于回水区,TN仅在夏季和10月份有突增,说明源头来水水质较好;估算出邻近长江干流对支流全年TP的补给量为25.59 t,TN的补给量约为479.57 t。
译  名：
The Characteristic of Hydrogen and Oxygen Stable Isotope and Its Environmental Significance between The Mainstream and a Tributary of The Three Gorges Reservoir -a case study of Caotang River
作  者：
CAI Ai-min;WANG Yu-chun;HU Ming-ming;BAO Yu-fei;YE Zhen-ya;DU Peng-cheng;China Institute of Water Resources and Hydropower Research;State Key Laboratory of Water Cycle Modeling and Controlling;China Three Gorges University;
单  位：
CAI Ai-min%WANG Yu-chun%HU Ming-ming%BAO Yu-fei%YE Zhen-ya%DU Peng-cheng%China Institute of Water Resources and Hydropower Research%State Key Laboratory of Water Cycle Modeling and Controlling%China Three Gorges University
关键词：
ecological water conservancy;;hydrogen and oxygen isotopes;;Three Gorges Reservoir area;;Caotang River;;nutrient salt
摘  要：
In order to provide a quick and effective method of quantitative estimation for the water and nutrient exchange between mainstream and tributaries of Three Gorges Reservoir, the characteristics of hydrogen and oxygen isotopes and the two element linear mixed model was used in this paper to quantitatively analyze nutrient exchange in water bodies. Through the determination of the temporal and spatial distribution of hydrogen and oxygen isotopes and the content of nutrients in the water of the typical small tributaries in the Three Gorges Reservoir area, the contribution of the main stream to the tributary of the Caotang River in each operation period of the reservoir is estimated, and the contribution of the main stream water to the TP and TN of the tributary of the Caotang River is discussed. The results show that the water supply rate from the main stream is 96.4% and the source water supply is only 3.6%. In addition, the analysis of nutrient content in the tributary of the Yangtze River and the tributary of the Caotang River showed that the supply of TP was basically from the main stream, and the annual variation trend of TP and TN was basically the same as that of the adjacent Yangtze River. The source TP of the tributaries is obviously lower than that of the backwater area, and TN has a sudden increase only in summer and October, indicating that the source water quality is

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