中山大学学报（自然科学版）（中英文）2017，Vol.56Issue(6)：31-37,7.DOI:10.13471/j.cnki.acta.snus.2017.06.004
汉江上游弥陀寺剖面风化成壤特征及其对气候变化的响应
Pedogenic characteristics of Mituosi profile in the upper Hanjiang river valley and its response to climate change
摘要
Abstract
The Mituosi (MTS) profile in Yunxian,Hubei of China was served to investigate pedo-stratigraphy and sedimentary characteristics of the first river terrace of the upper Hanjiang river.Magnetic susceptibility,grain-size distribution,loss on ignition and Rb/Sr were analyzed.The MTS profile recorded the environmental evolution with the stratigraphic series from bottom to top:Malan Loess (L1) →Transitional Loess (Lt) →Paleosol (S0) →Holocene Loess (L0) →Top soil (TS).Different stratigraphic units show different degree of weathering intensity,with S0 ＞ Lt ＞ L0 ＞ L1.The weathering intensity change of MTS profile indicates the climate change since Malan loess accumulation.It was cold and arid with gradually intensified southeast monsoon during the early Holocene.The strongest monsoon occurred in the mid-Holocene.During the late Holocene,the climate became drying with the monsoon recession.A cold climate event was recorded in MTS profile,dating to around 6.48 Ka BP (OSL dating).关键词
风化成壤/气候变化/黄土-古土壤/汉江上游Key words
pedogenesis/climate change/loess-paleosol/upper Hanjiang river分类
天文与地球科学引用本文复制引用
张文桐,庞奖励,周亚利,黄春长,查小春,王学佳,王海燕..汉江上游弥陀寺剖面风化成壤特征及其对气候变化的响应[J].中山大学学报（自然科学版）（中英文）,2017,56(6):31-37,7.基金项目
国家自然科学基金(41271108,41371029) （41271108,41371029）
国家社会科学基金(14BZS070) （14BZS070）
中央高校基本科研费(201601006) （201601006）
