海洋地质与第四纪地质2024，Vol.44Issue(2)：110-119,10.DOI:10.16562/j.cnki.0256-1492.2023041802
北黄海西部泥质区全新世以来沉积有机碳埋藏特征
The characteristics of sedimentary organic carbon in the mud area in the western North Yellow Sea since the Holocene
摘要
Abstract
The sedimentary environment of the mud area in the western North Yellow Sea is stable,and the sedimentary record is continuous,making it an excellent proxy for reconstructing paleoenvironment of the local region and surrounding watershed.Previous researches on the sedimentary organic carbon in the mud area are limited to its modern distribution characteristics through surface sediment analysis,and works on the long-term sedimentary processes and mechanisms of organic carbon remain insufficient.Core W03 in the mud area was used to reconstruct the sedimentary environment of organic carbon since the Holocene using sedimentary total organic carbon index,and to clarify the impact of climate and oceanic environmental changes on the source and deposition of organic carbon.During the period of sea level rise stagnation(10.3～9.8 cal.kaBP),a hard clay layer was developed rich in terrestrial organic carbon(60.7%).The turbulent sedimentary environment resulted in a relatively low total organic carbon content(average of only 0.22%).During the period of sea level rising(9.8～7.0 cal.kaBP),marine-sourced organic carbon(47.7%)boomed in a relatively stable sedimentary environment,which was conducive to the burial of organic carbon.Since the high sea level period(7.0 cal.kaBP to present),the Yellow Sea circulation system has been formed gradually,and the input of terrigenous organic carbon has changed correspondingly with the change of coastal current intensity under the East Asian winter monsoon scheme.The contribution of marine organic carbon was increased continuously to 50.0%,and so did the content of total organic carbon(0.58%).Therefore,sedimentary organic carbon in the mud area since the Holocene is controlled by sea level fluctuation and the resultant ocean circulation system.关键词
泥质区/全新世/沉积有机碳/北黄海Key words
mud area/the Holocene/sedimentary organic carbon/the North Yellow Sea分类
海洋科学引用本文复制引用
王培杰,胡利民,闫天浩,王厚杰,毕乃双,王楠,张洋,吴晓..北黄海西部泥质区全新世以来沉积有机碳埋藏特征[J].海洋地质与第四纪地质,2024,44(2):110-119,10.基金项目
山东省泰山学者项目(TS20190913,TSQN202211054) （TS20190913,TSQN202211054）
国家自然科学基金项目"黄河口关键过程及物质输运协同效应重大科学考察实验研究"(42149301) （42149301）
山东省高等学校"青创团队计划"团队项目(2022KJ045) （2022KJ045）
中央高校基本科研业务费专项"山东半岛泥质区千年尺度有机碳埋藏特征的区域差异与机制分析"(202161012),中央高校基本科研业务费专项"人新世河口海岸"(202241007) （202161012）
