Quantifying the impact of bathymetric changes on the hydrological regimes in a large floodplain lake: Poyang Lake
文献类型：期刊论文
| 作者 | Yao, Jing1; Zhang, Qi1; Ye, Xuchun3; Zhang, Dan1; Bai, Peng2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 561页码:711-723 |
| 关键词 | Bathymetric changes Hydrodynamic model Low water level Spatiotemporal distribution Poyang Lake |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2018.04.035 |
| 通讯作者 | Zhang, Qi(qzhang@niglas.ac.cn) |
| 英文摘要 | The hydrological regime of a lake is largely dependent on its bathymetry. A dramatic water level reduction has occurred in Poyang Lake in recent years, coinciding with significant bed erosion. Few studies have focused on the influence of bathymetric changes on the hydrological regime in such a complex river-lake floodplain system. This study combined hydrological data and a physically based hydrodynamic model to quantify the influence of the bathymetric changes (1998-2010) on the water level spatiotemporal distribution in Poyang Lake, based on a dry year (2006), a wet year (2010) and an average year (2000-2010). The following conclusions can be drawn from the results of this study: (1) The bed erosion of the northern outlet channel averaged 3 m, resulting in a decrease in the water level by 1.2-2 m in the northern channels (the most significantly influenced areas) and approximately 0.3 m in the central lake areas during low-level periods. The water levels below 16 m and 14 m were significantly affected during the rising period and recession period, respectively. The water level reduction was enhanced due to lower water levels. (2) The water surface profiles adjusted, and the rising and recession rates of the water level increased by 0.5-3.1 cm/d at the lake outlet. The bathymetric influence extended across the entire lake due to the emptying effect, resulting in a change in the water level distribution. The average annual outflow increased by 6.8%. (3) The bathymetric changes contributed approximately 14.4% to the extreme low water level in autumn 2006 and enhanced the drought in the dry season. This study quantified the impact of the bathymetric changes on the lake water levels, thereby providing a better understanding of the potential effects of continued sand mining operations and providing scientific explanations for the considerable variations in the hydrological regimes of Poyang Lake. Moreover, this study attempts to provide a reference for the assessment of similarly dramatic bathymetric changes in complex floodplain lakes. |
| WOS关键词 | YANGTZE-RIVER FLOW ; FRESH-WATER LAKE ; 3 GORGES DAM ; POTENTIAL IMPACTS ; CHANGJIANG RIVER ; RESIDENCE TIME ; CHINA ; SYSTEM ; SEA ; SEDIMENT |
| 资助项目 | National Basic Research Program of China[2012CB417000] ; National Natural Science Foundation of China[41371062] ; National Natural Science Foundation of China[41301023] ; Model Development Project for Aquatic Ecology of Poyang Lake[PJB201701] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000439401800055 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Basic Research Program of China ; National Natural Science Foundation of China ; Model Development Project for Aquatic Ecology of Poyang Lake |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/130008]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Qi |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Watershed Geog Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Jing,Zhang, Qi,Ye, Xuchun,et al. Quantifying the impact of bathymetric changes on the hydrological regimes in a large floodplain lake: Poyang Lake[J]. JOURNAL OF HYDROLOGY,2018,561:711-723. |
| APA | Yao, Jing,Zhang, Qi,Ye, Xuchun,Zhang, Dan,&Bai, Peng.(2018).Quantifying the impact of bathymetric changes on the hydrological regimes in a large floodplain lake: Poyang Lake.JOURNAL OF HYDROLOGY,561,711-723. |
| MLA | Yao, Jing,et al."Quantifying the impact of bathymetric changes on the hydrological regimes in a large floodplain lake: Poyang Lake".JOURNAL OF HYDROLOGY 561(2018):711-723. |
入库方式： OAI收割
来源：地理科学与资源研究所
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