Effect of burning C3 and C4 plants an the magnetic susceptibility signal in soils

	Effect of burning C3 and C4 plants an the magnetic susceptibility signal in soils
	Lu, HY ; Liu, TS ; Gu, ZY ; Liu, BZ ; Zhou, LP ; Han, JM ; Wu, NQ
刊名	GEOPHYSICAL RESEARCH LETTERS
	2000-07-01
卷号	27 期号:13 页码:2013-2016
ISSN号	0094-8276
文献子类	Article
英文摘要	To understand the origin of the ultrafine pedogenic components responsible for the magnetic susceptibility (MS) enhancement remains a major challenging problem, in linking the magnetic signal with paleoclimatic conditions. Here we examine the influence of natural fires on the MS signal of both plants and modern soils and in particular the MS difference between C3 and C4 plant ashes and their influence possibly on soil magnetic susceptibility. We demonstrate that burning of C3 and C4 plants can enhance MS signal of modern soils. We show that C4 plants have greater potential to enhance the MS signal. The average MS value of C4 plant ashes is (532+/-61) x 10(-8)m(3) kg(-1), much higher than the average MS value of (120 +/-65) x 10(-8)m(3) kg(-1) of C3 plant ashes. The Fe2O3 concentration in C4 plant is two to four times higher than that in C3 pliant. One burning of the grassland, mainly consisting of C4 plants, can enhance MS value of the surface soil up to about 30-40%.
WOS关键词	CHINESE LOESS ; MAGNETOTACTIC BACTERIA ; ROCK MAGNETISM ; SEDIMENTS ; ORIGIN ; RECORD ; PALEOSOLS ; DEPOSITS
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000088021600054
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75939]
专题	中国科学院地质与地球物理研究所
通讯作者	Lu, HY
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Geol Survey Japan, Marine Geol Dept, Tsukuba, Ibaraki 3058567, Japan 3.Peking Univ, Dept Geog, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Lu, HY,Liu, TS,Gu, ZY,et al. Effect of burning C3 and C4 plants an the magnetic susceptibility signal in soils[J]. GEOPHYSICAL RESEARCH LETTERS,2000,27(13):2013-2016.
APA	Lu, HY.,Liu, TS.,Gu, ZY.,Liu, BZ.,Zhou, LP.,...&Wu, NQ.(2000).Effect of burning C3 and C4 plants an the magnetic susceptibility signal in soils.GEOPHYSICAL RESEARCH LETTERS,27(13),2013-2016.
MLA	Lu, HY,et al."Effect of burning C3 and C4 plants an the magnetic susceptibility signal in soils".GEOPHYSICAL RESEARCH LETTERS 27.13(2000):2013-2016.