三峡水库坝前水体水化学及溶解无机碳时空分布特征
Temporal and spatial variation of water chemistry and dissolved inorganic carbon isotope characterization in Three Gorges Reservoir
查看参考文献36篇
|
文摘
|
以三峡水库坝前水体为研究对象,分析了三峡水库蓄水至145m和172m水位时坝前垂向水体基本物理化学参数、主量元素、溶解无机碳(DIC)含量及其碳同位素(δ~(13)C_(DIC))分布特征。研究结果表明,无论夏季还是冬季,坝前水体均没有出现水温分层现象,pH、电导、溶解氧也没有发生分层现象。坝前水体水化学组成主要受碳酸盐岩风化的控制,主量元素、溶解无机碳含量和三峡大坝截流前相比没有发生明显的变化。水体δ~(13)C_(DIC)值夏季(丰水期)低于冬季(枯水期),在垂向上变化不明显,与水库、湖泊δ~(13)C_(DIC)的时空变化特征相异而与自然河流的变化特征相似。目前,三峡水库坝前水体水化学特征主要表现出自然河流的特征,水库"湖沼学反应"还不明显。 |
|
其他语种文摘
|
Water samples upstream the Three Gorges Dam(TGD) were collected in July(summer) and December 2009(winter) to determine the basic chemical and physical parameters,concentrations of major ions,and contents and isotopic values(δ~(13)C_(DIC)) of dissolved inorganic carbon(DIC).The results showed that the stratification of water temperature,pH,EC and dissolved oxygen has not been detected in the water column.The chemical composition of studied water samples in Three Gorges Reservoir was characterized by the dominance of Ca~(2+) and HCO~-_3,which is mainly controlled by weathering of carbonate rocks due to the widespread of these rocks in the upper Yangtze River catchment.Compared with the data in 2003 when the Three Gorges Dam was not fully completed,the concentrations of major ions and DIC in 2009 were not significantly varied.The δ~(13)C_(DIC) values of the water samples in summer were lower than those in winter,and didn’t show significant variation with the increase of water depth,which is similar to the characteristics of natural rivers but different from the other reservoirs and lakes.At the present study,the hydrochemical characteristics of waters in the main river channel of Three Gorges Reservoir exhibited the feature of natural river rather than traditional reservoir. |
|
来源
|
环境科学学报
,2012,32(3):654-661 【核心库】
|
|
关键词
|
三峡水库
;
水体分层
;
主量元素
;
溶解无机碳
;
碳同位素
|
|
地址
|
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0253-2468 |
|
学科
|
环境污染及其防治 |
|
基金
|
中国科学院知识创新工程重要方向项目
;
国家自然科学基金
|
|
文献收藏号
|
CSCD:4451239
|
参考文献 共
36
共2页
|
|
1.
Atekwana E A. Seasonal variations of dissolved inorganic carbon and [delta]13 C of surface waters: application of a modified gas evolution technique.
Journal of Hydrology,1998,205(3/4):265-278
|
被引
48
次
|
|
|
|
|
2.
长江水利委员会.
三峡工程生态环境影响研究,1997:1-290
|
被引
3
次
|
|
|
|
|
3.
陈静生. 长江水质地球化学.
地学前缘,2006,13(1):74-85
|
被引
67
次
|
|
|
|
|
4.
陈静生. 长江中、上游水质变化趋势与环境酸化关系初探.
环境科学学报,1998,18(3):265-270
|
被引
21
次
|
|
|
|
|
5.
Das A. Carbon isotope ratio of dissolved inorganic carbon (DIC) in rivers draining the Deccan Traps,India: Sources of DIC and their magnitudes.
Earth and Planetary Science Letters,2005,236(1/2):419-429
|
被引
32
次
|
|
|
|
|
6.
邓云. 河道型深水库的温度分层模拟.
水动力学研究与进展 (A 辑),2004,19(5):604-609
|
被引
25
次
|
|
|
|
|
7.
中科院环境评价部.
长江三峡水利枢纽环境影响报告书,1996:1-64
|
被引
1
次
|
|
|
|
|
8.
Dynesius M. Fragmentation and flow regulation of river systems in the northern third of the world.
Science,1994,266(5186):753-762
|
被引
57
次
|
|
|
|
|
9.
El Din S H S. Effect of the Aswan High Dam on the Nile flood and on the estuarine and coastal circulation pattern along the Mediterranean Egyptian coast.
Limnology and Oceanography,1977,22(2):194-207
|
被引
3
次
|
|
|
|
|
10.
Hooper R P. The national stream quality accounting network: a flux-based approach to monitoring the water quality of large rivers.
Hydrological Processes,2001,15(7):1089-1106
|
被引
7
次
|
|
|
|
|
11.
Humborg C. Silicon retention in river basins: far-reaching effects on biogeochemistry and aquatic food webs in coastal marine environments.
Ambio,2000,29(1):45-50
|
被引
42
次
|
|
|
|
|
12.
Humborg C. Effect of Danube River dam on Black Sea biogeochemistry and ecosystem structure.
Nature,1997,386(6623):385-388
|
被引
99
次
|
|
|
|
|
13.
简慧敏. 长江流域常量元素的分布特征.
长江流域资源与环境,2010,19(1):93-97
|
被引
4
次
|
|
|
|
|
14.
焦树林. 西江河口段溶解无机碳稳定同位素组成的时空变化.
地理学报,2008,63(5):554-560
|
被引
1
次
|
|
|
|
|
15.
刘丛强.
生物地球化学与地表物质循环—西南喀斯特流域侵蚀与生源要素循环,2009:169-192
|
被引
1
次
|
|
|
|
|
16.
刘丛强. 河流筑坝拦截的水环境响应——来自地球化学的视角.
长江流域资源与环境,2009,18(4):384-396
|
被引
93
次
|
|
|
|
|
17.
李干蓉. 猫跳河流域梯级水库夏-秋季节溶解无机碳(DIC)含量及其同位素组成的分布特征.
环境科学,2009,30(10):2891-2897
|
被引
27
次
|
|
|
|
|
18.
李甜甜. 赣江上游河流水化学的影响因素及DIC来源.
地理学报,2007,62(7):764-775
|
被引
57
次
|
|
|
|
|
19.
李军. 硫酸侵蚀碳酸盐岩对长江河水 DIC 循环的影响.
地球化学,2010,39(4):306-313
|
被引
1
次
|
|
|
|
|
20.
刘宁. 三峡蓄水初期水库近坝区水环境特性分析.
水利学报,2006,37(12):1447-1453
|
被引
3
次
|
|
|
|
|
了解气象卫星更多信息，请访问