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  2. 烟台海岸带研究所
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  4. 中科院海岸带环境过程与生态修复重点实验室
Spatial variability and drivers of soil organic carbon burial in the tidal flats of the Yellow River Delta

文献类型：期刊论文

作者Zhao, Yiqi2,3; Ma, Tian2,3; Xu, Shendong1,3; Li, Yuan3; Zhao, Mingliang2,3; Song, Weimin2,3; Wang, Xiaojie2,3; Chu, Xiaojing2,3; Han, Guangxuan2,3
刊名CATENA
出版日期2026-06-01
卷号267页码:11
关键词Tidal flat Soil organic carbon Burial characteristics SOC stock Lignin phenols Microbial necromass
ISSN号0341-8162
DOI10.1016/j.catena.2026.109957
通讯作者Ma, Tian(tianma@yic.ac.cn) ; Xu, Shendong(sdxu@yic.ac.cn)
英文摘要Coastal tidal flats play a critical role in the global carbon cycle, yet the spatial patterns and controlling mechanisms of soil organic carbon (SOC) burial within estuarine wetlands remain poorly understood. Here, we investigated the lateral (seaward-landward) and vertical variability of SOC burial across low, middle, and high tidal flats in the Yellow River Delta. Based on 210Pb chronology and coupled with delta 13C and biomarker (lignin phenols, amino sugars) analyses, soil cores were collected to quantify sediment accumulation rates (SAR), organic carbon burial rates (OCBR), SOC stocks (SOCstock), and sources. Results showed that SAR decreased progressively from the seaward to the landward flats, while OCBR showed no significant lateral variation. The mean OCBR was 37.44 +/- 7.57, 32.71 +/- 9.16, and 24.62 +/- 4.09 g m-2 yr-1 at the low, middle, and high tidal flat, respectively. Both SAR and OCBR reached their lowest values at 60-100 cm layer. SOCstock were significantly higher in the high tidal flats, especially within the 0-30 cm layer. The ISOsource model revealed that marine phytoplankton-derived organic carbon decreased landward across all soil depths, whereas riverine particulate organic matter and local plant-derived contributions increased correspondingly. Although lignin phenols generally decreased from sea to land, their vertical variation remained limited. In contrast, microbial necromass carbon exhibited no significant lateral or vertical trends. Random forest analysis indicated that the C/N ratio played a significant role in controlling SOCstock throughout the soil profile. These results highlight pronounced spatial heterogeneity in SOC burial across tidal flats, necessitating the integration of both lateral and vertical variations in assessing carbon sequestration potential.
WOS关键词MATTER ; BIOMASS ; STORAGE
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:001710579800001
资助机构National Key Research and Development Program Of China ; Natural Science Foundation of China ; Opening Project of Guangxi Laboratory on the Study of Coral Reefs in the South China Sea
源URL[http://ir.yic.ac.cn/handle/133337/42252]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者Ma, Tian; Xu, Shendong
作者单位1.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China
2.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coasta, Dongying 257500, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Yiqi,Ma, Tian,Xu, Shendong,et al. Spatial variability and drivers of soil organic carbon burial in the tidal flats of the Yellow River Delta[J]. CATENA,2026,267:11.
APA Zhao, Yiqi.,Ma, Tian.,Xu, Shendong.,Li, Yuan.,Zhao, Mingliang.,...&Han, Guangxuan.(2026).Spatial variability and drivers of soil organic carbon burial in the tidal flats of the Yellow River Delta.CATENA,267,11.
MLA Zhao, Yiqi,et al."Spatial variability and drivers of soil organic carbon burial in the tidal flats of the Yellow River Delta".CATENA 267(2026):11.

入库方式： OAI收割

来源：烟台海岸带研究所

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