[1]李 苏,龙晓泳*,黄 冉,等.热带高磁性花岗岩区土壤磁学的气候响应及古气候学意义[J].山地学报,2025,(6):836-850.[doi:10.16089/j.cnki.1008-2786.000935]
 LI Su,LONG Xiaoyong*,HUANG Ran,et al.Climate Response of Soil Magnetism in Tropical High-Magnetic Granite Area of China and Its Paleoclimatic Significance[J].Mountain Research,2025,(6):836-850.[doi:10.16089/j.cnki.1008-2786.000935]
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热带高磁性花岗岩区土壤磁学的气候响应及古气候学意义()

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2025年第6期
页码:
836-850
栏目:
山地环境
出版日期:
2026-01-31

文章信息/Info

Title:
Climate Response of Soil Magnetism in Tropical High-Magnetic Granite Area of China and Its Paleoclimatic Significance
文章编号:
1008-2786-(2025)6-836-15
作者:
李 苏龙晓泳*黄 冉郝丁凡白 莹
(西南大学 地理科学学院,重庆 400715)
Author(s):
LI Su LONG Xiaoyong* HUANG Ran HAO Dingfan BAI Ying
(School of Geographical Sciences, Southwest University, Chongqing 400715, China)
关键词:
花岗岩 铁氧化物 磁性矿物 热带
Keywords:
granite iron oxides magnetic minerals tropics
分类号:
P318
DOI:
10.16089/j.cnki.1008-2786.000935
文献标志码:
A
摘要:
表生铁氧化物对区域气候和成壤环境的变化具有高度敏感性,其磁学指标可用于土壤分类及古气候重建等领域。花岗岩中原生磁性矿物的风化蚀变可干扰土壤磁性的气候响应,既有研究多聚焦于低磁性花岗岩地区,对高磁性花岗岩区土壤磁性的气候响应研究较少。本文以海南吊罗山高磁性花岗岩残积土为研究对象,运用土壤化学和磁学方法,分析了不同山地气候(温度:25.0 ℃~19.8 ℃; 降雨量:2012~3832 mm·a-1)条件下,土壤铁氧化物相的转化过程及磁性颗粒的气候响应机制。研究发现:(1)与低磁性花岗岩地区相比,吊罗山花岗岩残积土磁性随气候变化同样存在阈值效应;(2)吊罗山中部气候适中地区(21.4 ℃, 3278 mm)磁性矿物最为富集,磁性颗粒以原生单畴和多畴颗粒为主,并随剖面深度增加而增强;(3)吊罗山顶部和底部地区磁性明显降低,前者与山顶降水增加导致的化学风化增强及铁氧化物的快速水化有关,后者与山底温度增加,导致化学风化增强及原生粗颗粒磁性矿物的快速氧化有关。该研究对理解高磁性母质的土壤发生过程,评估沉积物中的碎屑磁性矿物的破坏对气候重建的影响有重要意义。
Abstract:
Pedogenic iron oxides are highly sensitive to regional climate and pedogenic environment variations, and their magnetic proxies have been widely applied in soil classification and paleoclimate reconstruction. The weathering and alteration of magnetic minerals associated with granite distort the climatic response of soil magnetism; however, previous research predominantly focused on low-magnetic granite regions, leaving the climatic response of soil magnetism in high-magnetic granite areas understudied.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2025- 02-24; 改回日期(Accepted date): 2025-12-29
基金项目(Foundation item): 国家自然科学基金(41877369)。 [National Natural Science Foundation of China(41877369)]
作者简介(Biography): 李苏(2000-),女,河南濮阳,硕士研究生,主要研究方向:铁氧化物与环境磁学。[LI Su(2000-), female, born in Puyang, Henan Province, M.Sc. candidate, research on iron oxides and environmental magnetism] E-mail: ls0127ls@163.com
*通讯作者(Corresponding author): 龙晓泳(1979-),男,博士,教授,主要研究方向:行星表面铁氧化物的高光谱与环境磁学。[LONG Xiaoyong(1979-), male, Ph.D., professor, research onhyperspectral and environmental magnetism of iron oxides on planetary surfaces] E-mail:longxy@126.com
更新日期/Last Update: 2025-12-20