Changes in sediment, nutrients and major ions in the world largest reservoir: Effects of damming and reservoir operation
文献类型：期刊论文
| 作者 | Li, Siyue1,2 ; Xu, Jun3,4; Ni, Maofei2,5
|
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2021-10-10 |
| 卷号 | 318页码:14 |
| 关键词 | River damming Reservoir operation Three gorges reservoir Yangtze (changjiang) Water quality Water chemistry |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2021.128601 |
| 通讯作者 | Li, Siyue(syli2006@163.com) |
| 英文摘要 | River damming and reservoir operation alter hydrological process, raising concerns over far-reaching influence on fluvial water, biogeochemistry and sediment fluxes due to the common occurrence of fragmented river landscapes around the world. Here, we investigated carbon, nutrients, and geochemical conditions in the world's largest reservoir, the Three Gorge Reservoir (TGR) in China, under three different dam operations. We also analyzed long-term trends of sediment and geochemistry in response to the reservoir building and operation. We found a drastically reduced average sediment load of 32 +/- 29 Mt/y during the post-TGR, which accounts for only 6.4% of the average annual sediment load (501 Mt/y) during the period, of 1950-2000. Cumulatively, over 2004-2018, sediment inflow to the TGR totaled 2090 Mt and sediment outflow (i.e. downstream of the TGR) was 480 Mt, resulting in a total of 1610 Mt (or 77%) sediment trapped in the Reservoir, equivalent to 107 Mt/y. The reservoir water is geochemically dominated by Ca2+ and HCO3- with low-moderate mineralization and excess nutrients. Concentrations of carbon, nutrients and major ions differ notably in response to reservoir operations with the highest nitrogen level under the sluicing period (SP). Major cations concentrations are low in the low water level period (LWLP), while major cations and Cl- and SO42-concentrations reach high in the SP. Con-centrations of Cl-, SO42-, and Na++K+ increase 2-3-fold, increasing their relative abundance by a factor of 1.5-2. Nutrients show overall increases with considerable alteration of dominance for dissolved and particular species due to damming and anthropogenic inputs. Furthermore, dissolved inorganic nitrogen increases 8-fold during the last 50 years. The findings imply great effects of river damming and reservoir regulation on sedi-ment transport, nutrient levels and major ion chemistry.
|
| 资助项目 | National Natural Science Foundation of China[31670473] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000725264900004 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/14755]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Li, Siyue |
| 作者单位 | 1.Wuhan Inst Technol, Key Lab Novel Reactor & Green Chem Technol Hubei, Res Ctr Environm Ecol & Engn,Minist Educ, Sch Environm Ecol & Biol Engn,Key Lab Green Chem, Wuhan 430205, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Louisiana State Univ, Sch Renewable Nat Resources, Agr Ctr, Baton Rouge, LA 70803 USA 4.Louisiana State Univ, Coastal Studies Inst, Baton Rouge, LA 70803 USA 5.Guizhou Minzu Univ, Coll Ecoenvironm Engn, Guiyang 550025, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Siyue,Xu, Jun,Ni, Maofei. Changes in sediment, nutrients and major ions in the world largest reservoir: Effects of damming and reservoir operation[J]. JOURNAL OF CLEANER PRODUCTION,2021,318:14. |
| APA | Li, Siyue,Xu, Jun,&Ni, Maofei.(2021).Changes in sediment, nutrients and major ions in the world largest reservoir: Effects of damming and reservoir operation.JOURNAL OF CLEANER PRODUCTION,318,14. |
| MLA | Li, Siyue,et al."Changes in sediment, nutrients and major ions in the world largest reservoir: Effects of damming and reservoir operation".JOURNAL OF CLEANER PRODUCTION 318(2021):14. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。