A red clay layer in soils of the Yellow River Delta: Occurrence, properties and implications for elemental budgets and biogeochemical cycles
文献类型：期刊论文
| 作者 | Li Y ; Zhang HB; Fu CC; Tu C; Luo YM; Christie P
|
| 刊名 | Catena
 |
| 出版日期 | 2019 |
| 卷号 | 172页码:469–479 |
| 关键词 | Clay layer Coastal zone Elemental geochemistry Yellow River Delta |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2018.09.015 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Clay-Aenriched layers occurring in deltas are important as they reveal erosion, transportation and deposition of source materials from the basin to the coast. In the Yellow River Delta a red clay layer (RCL) with a thickness of 5-50 cm at 1 m depth in the soil profile occurs in the floodplain area dominated by fluvo-aquic soil derived from Yellow River sediments. The RCL typically has a median grain size of < 20 mu m, redness (a*) of > 7, and relatively high contents of illite, calcite and iron oxides. In the Loess-Yellow River sediment-Yellow River Delta soil continuum a regime of weathering, mechanical sorting and dilution by carbonates and silica have been important factors altering the elemental geochemistry. The abundance of secondary minerals and deficiencies of silica and zircon in the RCL suggest that it was separated from a mixed source and was likely derived from highly weathered sediments (such as paleosol) from the basin. RCL samples show substantial accumulation of inorganic carbon with enhancement of the organic carbon content, indicating that increasing organic carbon in alkaline soils may lead to an increase in inorganic carbon in the subsoil. Large variations in elemental ratios have been found in the RCL characterized by excess nitrogen and trace metals and phosphorus deficiency due to adsorption and weathering effects. Implementation of the water-sediment regulation scheme (WSRS) may have altered the sedimentary environment and may have aggravated an elemental imbalance due to the occurrence of the yellow silt layer (YSL)-RCL sequence and thereby impacted biogeochemical cycling in the river-delta-coast continuum. |
| WOS关键词 | UPPER CONTINENTAL-CRUST ; WATER-SEDIMENT REGULATION ; CHINESE LOESS PLATEAU ; ORGANIC-CARBON ; PALEOCLIMATIC IMPLICATIONS ; INORGANIC CARBON ; LOWER REACHES ; BOHAI SEA ; HUANGHE ; EVOLUTION |
| WOS研究方向 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000449136800044 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/24149]  |
| 专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Luo YM |
| 推荐引用方式 GB/T 7714 | Li Y,Zhang HB,Fu CC,et al. A red clay layer in soils of the Yellow River Delta: Occurrence, properties and implications for elemental budgets and biogeochemical cycles[J]. Catena,2019,172:469–479. |
| APA | Li Y,Zhang HB,Fu CC,Tu C,Luo YM,&Christie P.(2019).A red clay layer in soils of the Yellow River Delta: Occurrence, properties and implications for elemental budgets and biogeochemical cycles.Catena,172,469–479. |
| MLA | Li Y,et al."A red clay layer in soils of the Yellow River Delta: Occurrence, properties and implications for elemental budgets and biogeochemical cycles".Catena 172(2019):469–479. |
入库方式： OAI收割
来源：烟台海岸带研究所
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