三峡水库典型支流消落带泥沙颗粒态磷复合指纹示踪研究
Fingerprinting particulate phosphorus absorbed by sediments for riparian zone deposits in tributary of Three Gorges Reservoir
查看参考文献30篇
|
文摘
|
三峡水库消落带是库区水域与周边陆地环境的关键过渡地带,周期性反季节干湿交替使其具有强烈的物质交换特征。辨析消落带泥沙及其吸附的颗粒态磷的来源对消落带土壤污染防治和环境效应评估以及三峡水环境保护具有重要意义。以三峡库区汝溪河支流不同高程(145~155、>155~165、>165~175 m)消落带为研究对象,运用复合指纹技术查明,消落带泥沙中颗粒态磷的主要来源是长江干流悬移质和汝溪河上游悬移质。淹水期间长江干流江水顶托引起的泥沙沉积是颗粒态磷的主要来源,在>165~175 m高程带对颗粒态磷的贡献达到最大(54.5%)。雨季初期支流上游悬移质对145~155 m高程消落带的颗粒态磷贡献最大(51.6%),而随高程的增加贡献率减少。消落带上方的土壤侵蚀产沙主要堆积在>155~165和>165~175 m高程范围内,导致消落带上方土壤对泥沙和颗粒态磷的贡献率都随高程的增加而增加。 |
|
其他语种文摘
|
Information on deposited sediment and associated particulate phosphorus(PP)is of great importance for development of effective management strategies in the riparian zone of the Three Gorges Reservoir.In this study,a composite fingerprinting approach was used to identify the sources of deposited sediment and associated PP in the riparian zone with different elevations(145-155,>155-165,>165-175 m)along the Ruxi tributary channel.Three potential sediment sources were defined:the topsoil above the 175 m elevation level of the riparian zone,and the suspended sediments transported by both the mainstream of Yangtze River and the upstream Ruxi River.The target deposited sediments were collected at different elevation levels of the riparian zone along the Ruxi River and a total of 18 geochemical properties factors were analyzed for the size fraction of sediment smaller than 63 μm.A commonly used 3-step(range test,KW-H test and DFA analysis)statistical methodology to element selection was applied to select the optimum subset of tracer properties that could best discriminate sources.The relative contribution of the 3 potential sources to the deposited sediment in the riparian zone was estimated using a frequentist-based multivariate mixing model.The relative importance of those sources to the overall PP was then determined by combining the information obtained from deposited sediment sources with information on the P content of those sources.Source apportionment results showed that the suspended sediments transported by both the Yangtze mainstream and the upstream Ruxi tributary represent the dominant sources of PP deposits in the riparian zone,which account for 88.6%-95.4% of the PP input.The corresponding sediment contribution from these 2 sources ranged from 69.7% to 84.2%,which varied between elevation levels.The PP contribution from the Yangtze mainstream was 54.5% for the >165-175 m level.The relative PP contribution from the Ruxi River was the most important during the early wet season,which was 51.6%(145-155 m).In contrast,the PP input from the topsoil above the 175 m level of the riparian zone exhibited to be less important(mean of 8.5%)during the study period.The information on sediment contribution of this source reveals that most of the eroded sediment from the topsoil above the 175 m level was preferentially deposited in the elevation levels of <155-165 m and >165-175 m.The findings of this research highlight the important impacts of impoundment on the riparian zone of the tributaries of the reservoir in terms of sediment accumulation and pollution. |
|
来源
|
农业工程学报
,2019,35(20):118-124 【核心库】
|
|
DOI
|
10.11975/j.issn.1002-6819.2019.20.015
|
|
关键词
|
磷
;
泥沙
;
元素
;
消落带
;
复合指纹技术
|
|
地址
|
1.
中国科学院水利部成都山地灾害与环境研究所, 成都, 610041
2.
中国科学院大学, 北京, 100049
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1002-6819 |
|
学科
|
化学 |
|
基金
|
国家重点研发计划
;
国家自然科学基金
|
|
文献收藏号
|
CSCD:6626154
|
参考文献 共
30
共2页
|
|
1.
Bao Yuhai. The water-level fluctuation zone of Three Gorges Reservoir: A unique geomorphological unit.
Earth-Science Reviews,2015,150:14-24
|
被引
48
次
|
|
|
|
|
2.
中华人民共和国环境保护部.
长江三峡工程生态与环境监测公报,2014:27-29
|
被引
2
次
|
|
|
|
|
3.
中华人民共和国环境保护部.
长江三峡工程生态与环境监测公报,2015:25-27
|
被引
1
次
|
|
|
|
|
4.
Pionke H B. Phosphorus status and content of suspended sediment in a Pennsylvania watershed.
Soil Sci,1992,153:452-462
|
被引
4
次
|
|
|
|
|
5.
Vanni M J. Dissolved and particulate nutrient flux from three adjacent agricultural watersheds: A five-year study.
Biogeochemistry,2001,54:85-114
|
被引
8
次
|
|
|
|
|
6.
Foster I D L. Changing suspended sediment and particulate phosphorus loads and pathways in under drained lowland agricultural catchments: Herefordshire and Worcestershire, UK.
Hydrobiologia,2003,494:119-126
|
被引
9
次
|
|
|
|
|
7.
Simard R R. Potential for pathways of phosphorus transport.
J Environ Qual,2000,29(1):97-105
|
被引
31
次
|
|
|
|
|
8.
Walling D E. Tracing suspended sediment and particulate phosphorus sources in catchments.
Journal of Hydrology,2008,350(3/4):274-289
|
被引
15
次
|
|
|
|
|
9.
周慧平. 基于泥沙指纹识别的小流域颗粒态磷来源解析.
农业工程学报,2015,31(13):251-256
|
被引
11
次
|
|
|
|
|
10.
杨明义. 黄土高原小流域泥沙来源的复合指纹识别法分析.
水土保持学报,2010,24(2):30-34
|
被引
29
次
|
|
|
|
|
11.
郭进. 复合指纹识别技术定量示踪流域泥沙来源.
农业工程学报,2014,30(2):94-104
|
被引
23
次
|
|
|
|
|
12.
Pulley S. The uncertainties associated with sediment fingerprinting suspended and recently deposited fluvial sediment in the Nene river basin.
Geomorphology,2015,228:303-319
|
被引
10
次
|
|
|
|
|
13.
Chen Fangxin. Sediment source analysis using the fingerprinting method in a small catchment of the Loess Plateau, China.
Journal of Soils and Sediments,2016,16(5):1655-1669
|
被引
5
次
|
|
|
|
|
14.
Walling D E. Tracing sources of suspended sediment in river basins: A case study of the River Culm, Devon, UK.
Marine and Freshwater Research,1995,46:327-336
|
被引
11
次
|
|
|
|
|
15.
Haddadchi A. Quantifying sources of suspended sediment in three size fractions.
Journal of Soils and Sediments,2015,15(10):2086-2100
|
被引
3
次
|
|
|
|
|
16.
Vale S S. Characterization and quantification of suspended sediment sources to the Manawatu River, New Zealand.
Science of The Total Environment,2016,543:171-186
|
被引
5
次
|
|
|
|
|
17.
Olley J. Major element chemistry of sediments from the Darling-Barwon river and its tributaries: implications for sediment and phosphorus sources.
Hydrological Processes,2000,14(7):1159-1175
|
被引
5
次
|
|
|
|
|
18.
Shi Zhonglin.
Sedimentary Processes: Examples from Asia, Turkey and Nigeria,2019
|
被引
1
次
|
|
|
|
|
19.
Walling D E. Using environmental radionuclides, mineral magnetism and sediment geochemistry for tracing and dating fluvial sediments.
Tools in Fluvial Geomorphology: Second Edition,2016:183-209
|
被引
1
次
|
|
|
|
|
20.
Collins A L. Sediment sources in the upper severn catchment: A fingerprinting approach.
Hydrology & Earth System Sciences,1997,1(3):509-521
|
被引
4
次
|
|
|
|
|
了解气象卫星更多信息，请访问