中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Did streamflow or suspended sediment concentration changes reduce sediment load in the middle reaches of the Yellow River?

文献类型:期刊论文

作者Zhang, Jianjun1,2,3; Zhang, Xioping1; Li, Rui1; Chen, Lili1; Lin, Pengfei1,3
刊名JOURNAL OF HYDROLOGY
出版日期2017-03-01
卷号546页码:357-369
关键词Ecological restoration Sediment yield Suspended sediment concentration Streamflow Loess Plateau
ISSN号0022-1694
DOI10.1016/j.jhydro1.2017.01.002
通讯作者Zhang, Xioping(zhangxp@ms.iswc.ac.cn)
英文摘要The continuous ecological restoration of the Loess Plateau, which aims to reduce the sediment entering into the Yellow River, is known throughout the world for two strategies: the integrated soil conservation project that began in the 1970s, and the "Grain for Green" project that began in the 1990s. However, the topic of whether the muddy water in the middle Yellow River run clearer remains debatable, and, in fact, response to the topic is reasonably well documented in regard to hydrological changes in the sediment source area. Six sub-catchments nested in the Beiluo River basin - one of the major sediment sources for the Yellow River - were selected, with data series ranging from 1957 to 2009. The Mann-Kendall and Pettitt tests were used for trend detection. A simple method was developed based on the distribution of suspended sediment concentration (SSC) versus water discharge. Using this method, we evaluated the quantities of sediment yield reduction attributed to streamflow and SSC changes due to the two strategies. The results showed that annual sediment yield in 5 out of 6 stations significantly decreased, with rates varying from -4 to -217 t center dot km(-2)center dot yr(-1). Significant decreases in daily and event streamflow and suspended sediment concentration were identified, especially at a high SSC (top 1-5%). During the integrated soil conservation period, the sediment yield was reduced mainly by decreases in high flow and high SSC conditions. In contrast, during the "Grain for Green" period, sediment yield was reduced due to decreases in streamflow and SSC at all magnitudes. It was concluded that rainfall-sediment load dynamics have changed in the context of ecological restoration. Changes in both streamflow and the SSC-water discharge relationship induced the sediment yield reduction over time; in other words, the streamflow in the middle reaches of Yellow River became clearer during periods of ecological restoration. Moreover, the increased annual sediment yield at the Zhangcunyi station exposed a risk of increased erosion in areas where forests had been well preserved. (c) 2017 Elsevier B.V. All rights reserved.
WOS关键词LOESS PLATEAU ; CLIMATE VARIABILITY ; VEGETATION CHANGES ; SOIL-EROSION ; CHECK-DAM ; CHINA ; BASIN ; YIELD ; TRENDS ; DEFORESTATION
资助项目National Natural Science Foundation of China[41230852] ; National Natural Science Foundation of China[41440012] ; National Natural Science Foundation of China[41101265] ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-C2]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:000395607700030
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
源URL[http://ir.igsnrr.ac.cn/handle/311030/64703]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Xioping
作者单位1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhang, Jianjun,Zhang, Xioping,Li, Rui,et al. Did streamflow or suspended sediment concentration changes reduce sediment load in the middle reaches of the Yellow River?[J]. JOURNAL OF HYDROLOGY,2017,546:357-369.
APA Zhang, Jianjun,Zhang, Xioping,Li, Rui,Chen, Lili,&Lin, Pengfei.(2017).Did streamflow or suspended sediment concentration changes reduce sediment load in the middle reaches of the Yellow River?.JOURNAL OF HYDROLOGY,546,357-369.
MLA Zhang, Jianjun,et al."Did streamflow or suspended sediment concentration changes reduce sediment load in the middle reaches of the Yellow River?".JOURNAL OF HYDROLOGY 546(2017):357-369.

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来源:地理科学与资源研究所

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