三峡库区干支流消落带泥沙沉积特征分析
The Sediment Characteristics of Riparian Zone of Tributaries and Main Stream in Three Gorges Reservoir Area
查看参考文献9篇
|
文摘
|
为了阐明三峡库区消落带泥沙沉积的特征,选择三峡库区5个典型支流断面和2个干流断面,采集消落带沉积泥沙样和坡面对照样共42个,分析了三峡库区干支流消落带沉积泥沙的颗粒组成、养分元素(有机质、总磷、总氮、钾)以及沉积泥沙来源。结果表明:干流消落带沉积泥沙相比支流消落带沉积泥沙较粗,干流消落带泥沙粘粒呈现明显富集状态,富集率达到1.57。干流和支流消落带均表现为上部(170 m)比消落带下部(160 m)的~(137)Cs比活度高,由于消落带上部和下部受淹水时间的不同,造成消落带不同高程带的沉积过程和泥沙来源存在差异。干流消落带样的各养分元素含量与坡面表层对照样含量相当,并没有发生明显富集;而支流则相反,各养分元素有明显的富集,尤其是总磷元素,富集率达到2.43。 |
|
其他语种文摘
|
In order to clarify sediment characteristics of riparian zone in Three Gorges Reservoir region,we chose 5 typical tributary sections and 2 main stream sections of Yangtze River in Three Gorges Reservoir region as research objects,and 42 deposited sediment samples were collected from the riparian zone and control zone of Yangtze River and its tributaries for analyzing particle composition,nutrients(TOC,TN,TP and K)and the sediment source.The results indicated that sediment particles in riparian zone of Yangtze River were coarser than those of tributaries,and silt clay in main stream showed obvious enrichment state,with enrichment rate up to 1.57.In riparian zones of both Yangtze River and its tributaries,~(137) Cs activity was higher in the upper elevation(170m)than in the low elevation(160m),and deposition process and the sediment source were different between 2positions due to the difference of flooding time.Nutrient elements concentration of sediments in riparian zone of Yangtze River showed no obvious enrichment,on the contrary,the nutrient elements concentration showed obvious enrichment in riparian zone sediments of tributaries,especially TP,the enrichment ratio of which was up to 2.43. |
|
来源
|
水土保持学报
,2016,30(2):122-125,130 【核心库】
|
|
DOI
|
10.13870/j.cnki.stbcxb.2016.02.022
|
|
关键词
|
消落带
;
沉积泥沙
;
养分元素
;
三峡库区
|
|
地址
|
中国科学院水利部成都山地灾害与环境研究所, 中国科学院山地表生过程与生态调控重点实验室, 成都, 610041
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1009-2242 |
|
学科
|
水利工程 |
|
基金
|
国家自然科学重点基金项目
;
国家自然科学青年基金项目
;
中国科学院科技服务网络计划项目
|
|
文献收藏号
|
CSCD:5694171
|
参考文献 共
9
共1页
|
|
1.
Zhang Q F. The environmental changes and mitigation actions in the Three Gorges Reservoir region,China.
Enviroment Science Policy,2011,14(8):1132-1138
|
被引
25
次
|
|
|
|
|
2.
Yuan X Z. The littoral zone in the Three Gorges Reservoir,China:Challenges and opportunities.
Enviromental Science and Pollution Research,2013,20(10):7092-7102
|
被引
32
次
|
|
|
|
|
3.
Xu X B. Environmental impact assessments of the Three Gorges Project in China:Issues and interventions.
Earth-Science Reviews,2013,124(9):115-125
|
被引
25
次
|
|
|
|
|
4.
Su X L. Effects of the Three Gorges Dam on preupland and preriparian drawdown zones vegetation in the upper watershed of the Yangtze River,P.R.China.
Ecological Engineering,2012,44(2):123-127
|
被引
13
次
|
|
|
|
|
5.
Yang F. Review of environmental conditions in the water level fluctuation zone:Perspectives on riparianvegetation engineering in the Three Gorges Reservoir.
Aquatic Ecosystem Health & Management,2015,18(2):240-249
|
被引
18
次
|
|
|
|
|
6.
Bao Y H. Soil erosion in the riparian zone of the Three Gorges Reservoir,China.
Hydrology Research,2015,46(2):212-221
|
被引
20
次
|
|
|
|
|
7.
王海云. 三峡水库"藻类水华"成因条件研究.
人民长江,2007,38(2):16-154
|
被引
20
次
|
|
|
|
|
8.
郭劲松. 三峡库区消落带土壤有机质和全氮含量分布特征.
湖泊科学,2012,24(2):213-219
|
被引
38
次
|
|
|
|
|
9.
常超. 三峡水库蓄水对消落带土壤理化性质的影响.
自然资源学报,2011,26(7):1236-1244
|
被引
53
次
|
|
|
|
|
了解气象卫星更多信息，请访问