萨拉乌苏河流域米浪沟湾和滴哨沟湾沉积剖面记录的全新世气候变化

Holocene climate change recorded of Milanggouwan and Dishaogouwan sedimentary profile in the Salawusu River Basin.

作者信息

Sun Zhongqiang, Zhang Wenfei, Liu Longlong, Niu Dongfeng, Li Baosheng, Gu Siletu, Aketaqin Gegentana

机构信息

School of Geography, Lingnan Normal University, Zhanjiang, 524048, China.

School of Earth Science, Lanzhou University, Lanzhou, 730000, China.

出版信息

Sci Rep. 2025 Jul 17;15(1):25958. doi: 10.1038/s41598-025-11769-2.

DOI:10.1038/s41598-025-11769-2

PMID:40676089

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12271485/

Abstract

This paper investigates the MGS1 sedimentary profile and the DGS1 sedimentary profile (37° 41'-37° 45' N, 108° 29'-108° 35' E) to analyze the mean particle size (Mz), oxides and trace elements, chemical index of alteration (CIA), scanning electron microscopy (SEM) images, and their correlation with regional Holocene climate fluctuations in the Salawusu River Basin. The results demonstrate that the chemical element variations in MGS1 and DGS1 align with the aeolian dune facies, lacustrine facies, and paleosol. The climatic information reflected by oxides like SiO and trace elements like Sr shows temporal and spatial consistency, suggesting an obvious response to desert monsoon climate changes in northern China. The Holocene climate in the Salawusu River Basin is characterized by four periods of fluctuation: early Holocene warming (11,020-10,290 Yr BP), Holocene maximum warmth (10,290-6590 Yr BP), Holocene warm-cold transition (6590-3760 Yr BP), and Holocene cold-dry climate instability (3760-0 Yr BP).

摘要

本文研究了MGS1沉积剖面和DGS1沉积剖面（北纬37°41′-37°45′，东经108°29′-108°35′），以分析平均粒径（Mz）、氧化物和微量元素、蚀变化学指数（CIA）、扫描电子显微镜（SEM）图像，以及它们与萨拉乌苏河流域全新世区域气候波动的相关性。结果表明，MGS1和DGS1中的化学元素变化与风成沙丘相、湖相和古土壤一致。SiO等氧化物和Sr等微量元素所反映的气候信息具有时空一致性，表明对中国北方沙漠季风气候变化有明显响应。萨拉乌苏河流域全新世气候具有四个波动期：全新世早期变暖（公元前11,020-10,290年）、全新世最暖期（公元前10,290-6590年）、全新世暖冷过渡期（公元前6590-3760年）和全新世冷干气候不稳定期（公元前3760-0年）。