The fate of carbon in check dam sediments
文献类型：期刊论文
| 作者 | Yao, Yufei2,3; Song, Jinxi2,3; Wei, Xiaorong1,3,4 |
| 刊名 | EARTH-SCIENCE REVIEWS
 |
| 出版日期 | 2022 |
| 卷号 | 224页码:14 |
| 关键词 | Soil erosion Soil deposition Carbon cycle Carbon redistribution Stabilization mechanism |
| ISSN号 | 0012-8252 |
| DOI | 10.1016/j.earscirev.2021.103889 |
| 通讯作者 | Wei, Xiaorong(xrwei78@163.com) |
| 英文摘要 | Check dams are small engineering structures. They are used worldwide for soil and water conservation, gully rehabilitation, hydrological regulation, and food supply. Eroded materials trapped and buried in check dams constitute an important carbon (C) sink. However, as a typical deposition site, systematic information about C cycling processes in check dams is relatively unknown, despite its crucial role in estimating the fate of buried C and elucidating the ongoing C sink/source debate on soil erosion. This study reviewed the stock, source, enrichment, distribution, stability, and underlying mechanisms of sediment C in check dams. Current studies have found a large amount of C stored in check dams (approximately 1-30 Mg C km-2 yr? 1), and have demonstrated that C retention ability relied more on factors governing sediment production and trapping at larger scales than on check dam trapping efficiency at smaller scales. Stable isotopes, radiocarbon, geochemical properties, biomarkers, and spectroscopy methods have proven to be practical in identifying the sources of sediment C but can only be used in certain situations because of their intrinsic limitations. Both enrichment and impoverishment of sediment C compared with source soils have been reported, and have depended on soil erosion type, land-use type, sediment connectivity, and the loss of C during transportation. Sediment C generally increases from the back of the check dam to the front along the flow pathway and fluctuates vertically, depending on the clay and sand layers of the deposition couplets. Information about C mineralization and sequestration is relatively limited, and the existing studies have shown reduced C mineralization and promoted C-fixing potential in check dam sediments. Given the specific benefits of deposition couplets in reflecting information about burial period, erosion intensity, and historical land use, further studies should integrate C stability with soil erosion and deposition information for the deposit profiles. The responses of C cycling to climate change and human disturbances, such as warming, dam-break, tillage, and fertilization for check dam sediments require further research. |
| WOS关键词 | SOIL ORGANIC-CARBON ; LAND-USE CHANGE ; LOESS PLATEAU ; INORGANIC CARBON ; STABILIZATION MECHANISMS ; SOURCE IDENTIFICATION ; WATER CONSERVATION ; EROSION PROCESSES ; ISOTOPE ANALYSIS ; HILLY CATCHMENT |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40020000] ; National Natural Science Foundation of China[42107344] ; National Natural Science Foundation of China[41977068] ; Pro-gram from Chinese Academy of Sciences[QYZDB-SSW-DQC039] ; China Postdoctoral Science Foundation[2021T140558] ; China Postdoctoral Science Foundation[2020M683699XB] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-202106] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000787069500004 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Pro-gram from Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/175259]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wei, Xiaorong |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Peoples R China 3.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 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Yufei,Song, Jinxi,Wei, Xiaorong. The fate of carbon in check dam sediments[J]. EARTH-SCIENCE REVIEWS,2022,224:14. |
| APA | Yao, Yufei,Song, Jinxi,&Wei, Xiaorong.(2022).The fate of carbon in check dam sediments.EARTH-SCIENCE REVIEWS,224,14. |
| MLA | Yao, Yufei,et al."The fate of carbon in check dam sediments".EARTH-SCIENCE REVIEWS 224(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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