北京石景山工业区附近一个污染土壤剖面的磁学研究

对北京西郊石景山工业区附近的土壤剖面进行环境磁学研究,结合粒度、金属元素分析、磁学指标测试和多元统计分析,发现磁参数(χ,ARM,SIRM)与重金属元素(Mn,Cu,Fe,Pb,Zn,Al,Sr)含量呈同步垂向变化趋势.来源于工业区附近工业生产排放(钢铁厂、发电厂、水泥厂)的污染物是土壤剖面上部(0～3 cm)磁性和金属含量增强的主要原因,由富集在细粉砂和中粉砂的多畴磁铁矿主导了样品的磁性特征.3～10 cm重金属含量逐渐下降,土壤的磁性特征与上层相似,但磁性矿物含量降低,属于剖面中的迁移过渡阶段.10 cm以下,土壤基本未受到污染,磁性矿物和重金属含量都低,磁性颗粒大小变化稳定,基本代表了该地区土壤的自然背景.指标聚类和相关分析表明,土壤磁参数与重金属元素含量显著相关.结合模糊聚类分析,磁参数可用于追踪、识别工业污染物质在土壤剖面中的富集、迁移状态,揭示不同深度土壤的污染程度.     

南京某钢铁公司周边耕作土壤的磁学性质与重金属污染的相关性研究

对取自于南京西南郊某钢铁公司附近水稻田土壤NJ008样芯进行了磁性测量和重金属含量分析,探讨了利用农业耕作土壤的磁参数指示工业区周围重金属污染的可行性。环境磁学测试结果表明：磁化率（χ）、非磁滞剩磁（ARM）及饱和等温剩磁（SIRM）在土壤剖面上部20cm显著增强,磁化率平均值达到112.5×10^-8m^3·kg^-1;20cm以下呈现为较低磁背景特征,磁化率平均值为27.8×10^-8m^3·kg^-1。进一步的磁学实验证明低矫顽力的亚铁磁矿物主导了NJ008样芯的磁性特征,不完整反铁磁性矿物在20cm以下土壤中含量相对较高。Ni,Cu,Fe,Pb,V和Zn等重金属与磁化率呈现相同的变化特征。主成分分析表明亚铁磁性矿物和重金属受同一主成分控制,且磁指标（χ,ARM和SIRM）与重金属（Ni,Cu,Fe,Pb,V和Zn）呈显著相关关系（0.69≤R≤0.98）。对远离钢铁公司的同种耕作土壤剖面NJ013测试表明：其磁化率随深度变化不大,绝对值与NJ008在20cm以下磁背景值基本一致。表明耕作过程中的化肥和农药对土壤磁化率影响不大,钢铁公司释放的工业污染是NJ008土壤剖面中磁化率显著增强的主要原因。耕作土壤由于反复翻种,虽然不能用于污染历史及污染物迁移过程研究,但基于磁指标与部分重金属之间的显著相关性,耕作土壤仍然可以用于重金属污染分布范围的圈定和相对污染程度评价。     

天山北缘新近系沉积物岩石磁学研究

岩石磁学研究表明, 天山北缘塔西河剖面新近系可划分为湖相沉积型、河流相沉积型和冲积扇沉积型三种类型, 分别对应于剖面的底部(沙湾组和塔西河组中下部)、中部(塔西河组顶部和独山子组中下部)和上部(独山子组顶部和西域组), 其中湖相沉积岩石磁学性质复杂, 除与沉积物物源密切相关外, 还可能受风化作用、原地磁性矿物自生或成岩作用以及生物活动的影响, 天然剩磁强度为10^-3~10^-2 A/m, 主要磁性矿物为磁铁矿, 高矫顽力磁性矿物可能为针铁矿. 磁性矿物颗粒由假单畴和单畴(PSD+SD)或单畴和超顺磁混合组成(SD+SP); 河流相沉积天然剩磁强度为10^-2~10^-1 A/m, 主要磁性矿物为磁铁矿和赤铁矿, 磁性矿物颗粒为假单畴(PSD), 450~580℃可获得稳定的特征剩磁方向, 特征剩磁载磁矿物为磁铁矿; 冲积扇沉积天然剩磁强度介于湖相和河流相沉积之间, 主要磁性矿物也为磁铁矿和赤铁矿, 580~680℃获得稳定特征剩磁方向, 特征剩磁载磁矿物为赤铁矿, 磁性矿物颗粒为假单畴(PSD).     

北京密云水库表层沉积物磁性矿物的鉴别

本文对密云水库表层沉积物中的磁性矿物进行了岩石磁学和透射电子显微学的综合研究.本实验建立的磁选方法实现将70%~85%左右的磁性矿物从沉积物中分离出来.岩石磁学研究表明,密云水库沉积物中的磁性矿物以多畴和单畴磁铁矿为主,还含有少量高矫顽力弱磁性载磁矿物(可能为赤铁矿).对磁选矿物的透射电镜观测表明,样品中部分单畴磁铁矿具有纳米尺寸和化学纯度高等特点,为拉长的立方-八面体磁铁矿,是趋磁细菌产生的化石磁小体;多畴磁铁矿多数具有微米尺寸,形状不规则,为碎屑成因;超顺磁磁铁矿粒径约为5~20nm,且含硅、铝等元素,可能为自生成因.研究结果表明,岩石磁学和透射电子显微学的综合应用可以更全面、准确地分析沉积物中磁性矿物的成分、含量、粒径和化学成分等信息,为环境磁学、生物地磁学和古地磁学研究提供依据.     

苏北盆地兴化1#钻孔沉积物的岩石磁学特征

对苏北盆地兴化1#钻孔岩心沉积物进行了质量磁化率、频率磁化率、变化曲线、等温剩磁和磁滞回线等参数的测试分析,结果表明,粘土质沉积物中的主要载磁矿物为磁铁矿和赤铁矿;砂质沉积物中的磁性矿物除了磁铁矿和赤铁矿外,还含有少量的磁赤铁矿和针铁矿.针铁矿普遍存在于钻孔下部的样品中.整个钻孔沉积物中的磁性矿物颗粒都是介于单畴和多畴之间的准单畴颗粒,但粘土质沉积物中的磁性矿物颗粒更趋近于单畴颗粒,而砂质沉积物中的磁性矿物颗粒更趋近于多畴.根据不同的磁性矿物组合特征,选择合理的温度和磁场强度区间对古地磁退磁结果进行分析,得到沉积物可靠的特征剩磁方向,为古地磁年代学提供依据.     

福建三明地区被污染土壤的磁学性质及其环境意义

对福建三明某钢铁厂和火电厂附近的污染表土样品进行了多参数的岩石磁学测试分析,包括χ T曲线、磁滞回线、等温剩磁获得曲线等. 三明地区污染表土中的磁性矿物有磁铁矿、赤铁矿和磁黄铁矿. 样品中磁性矿物的平均粒度较粗,为较大的准单畴,甚至多畴,粒度明显大于成土作用所产生的磁性颗粒. 粗粒的磁铁矿颗粒是污染物的主要磁性组分. 虽然磁化率测量可以作为一种简单、快速而且廉价的检测污染土壤的方法,但同时辅以必要的岩石磁学测量将有利于提取更多的污染信息. 对于低磁化率的污染土壤,亚铁磁性硫化物的存在可以作为土壤可能被污染的证据之一.     

甘肃西山坪遗址岩石磁学性质及其研究意义探讨

对甘肃西山坪遗址剖面样品进行磁化率、频率磁化率、热磁分析、非磁滞剩磁和等温剩磁等一系列岩石磁学实验测试,分析环境磁学参数特征变化,试图探讨西山坪遗址研究意义,为今后深入研究该沉积序列蕴含的古环境记录提供了岩石磁学基础.结果表明：西山坪遗址剖面沉积物中磁性矿物主要以低矫顽力的磁铁矿和磁赤铁矿为主,高矫顽力磁性矿物赤铁矿含量极其有限,越向剖面表层,强磁性矿物含量逐渐增加.磁性矿物颗粒表现出黄土的典型特征,以单畴、准单畴为主,含有一定量的超顺磁颗粒,颗粒度越向剖面表层越细.从物源上看,遗址沉积物主要来自近源的黄土风尘堆积,主要是风成堆积,并混合大量人类活动信息,给今后综合研究岩石磁学与人类活动特征的关系有一定借鉴意义.     

亚热带地区发育于不同母岩风化壳上的红壤磁学特征对比及其环境意义

本研究对发育于亚热带地区花岗岩和变质岩风化壳之上的两个红壤剖面进行了系统的环境磁学测量及色度分析,探讨在同一地区不同母质上发育的红壤磁性差异的原因及其环境意义.研究区的两个剖面分别位于福建省南平市高铁北站和纺织厂附近,相距约15 km,气候条件基本相同.研究结果表明：（1）较强磁性的花岗岩母质层上发育的南平北站红壤（NPN）,在发育过程因母质层中多畴（MD）颗粒磁赤铁矿化的磁铁矿溶解,剖面上部的淋溶层和淀积层虽以较细的稳定单畴（SSD）颗粒和少量的假单畴（PSD）颗粒磁铁矿为主,但剖面磁性自下而上减弱.相较而言,南纺红壤（NF）剖面发育在磁性较弱的变质砂岩上,其过渡层和母质层以赤铁矿为主,因成壤过程中生成较细的超顺磁（SP）磁铁矿使得土壤淋溶层和淀积层磁性增强;说明母质不同是亚热带地区红壤磁性差异的主要原因.（2） NPN和NF两个剖面的气候条件基本相同,磁性差异比色度指标差异更为显著.亚热带地区因剖面受母质影响显著,整体磁性特征不能反映气候;黄度和红度的比值（b^*/a^*）远小于磁性的差异,说明针铁矿和赤铁矿的比值更能反映研究区的平均气候状况,即反映次生磁性矿物含量的参数为更适合的气候指标.     

中中新世秦安黄土-古土壤序列磁性增强机制及其环境意义

中中新世黄土高原风尘堆积序列磁化率显著增高,在区域内已成为地层对比标志,然而其磁性增强机制依然不清楚.本文对秦安地区QA-I剖面约14～17.1 Ma期间的黄土-古土壤样品进行了系统的环境磁学、岩石磁学(热磁性质、磁滞性质、非磁滞剩磁与饱和等温剩磁比值χ_ARM/SIRM等)和色度指标分析.结果表明,QA-I剖面黄土-古土壤序列样品中磁性矿物为准单畴(PSD)磁铁矿、超顺磁/单畴(SP/SD)磁赤铁矿和赤铁矿,古土壤中细粒磁赤铁矿含量高于上下相邻黄土层.CBD(Citrate-Bicarbonate-Dithionite)处理方法显示,中中新世风尘序列中碎屑成因的PSD磁铁矿含量变化不大,约14.5～16.0 Ma期间成壤成因SP/SD磁赤铁矿含量的增多,是导致该时期风尘堆积序列磁化率增强的主要原因;这与该时期较低的土壤发育程度并不一致,表明CBD处理方法虽然可有效获取成壤成因SP/SD磁赤铁矿信息,却无法区分其为当地还是源区成壤成因.低温磁学研究表明,QA-I剖面约14.5～16.0 Ma期间SP/SD磁赤铁矿可能为碎屑磁铁矿颗粒的风化外壳,其含量高低变化与风尘样...     

澳大利亚悉尼Long Reef Beach中新世古土壤岩石磁学特征及环境意义

本文对发育在澳大利亚悉尼附近的Long Reef Beach中新世古土壤剖面进行了系统的岩石磁学研究,测量了磁化率、饱和磁化强度、饱和等温剩磁、非磁滞剩磁等常温磁学参数和磁滞回线,并对所有样品进行了热磁分析.实验结果表明:全新世软土层主要磁性矿物为MD颗粒磁铁矿,磁性矿物含量与黄土高原黄土层相当.中新世老成土层随地层深度增加主要磁性矿物由磁铁矿转变为磁赤铁矿,随着磁铁矿向磁赤铁矿的转化,开始出现赤铁矿;磁性矿物粒径分布较广,以PSD颗粒为主,其次为SD颗粒,同时含有少量MD颗粒;磁性矿物含量高于黄土高原强发育古土壤层.中新世红土矿层主要磁性矿物为赤铁矿,同时含有少量磁赤铁矿和针铁矿,属于铁的富集层,赤铁矿以SD颗粒为主,含少量PSD和MD颗粒.Long Reef Beach中新世古土壤形成时期,对应着一种全球性高温多雨气候,地表化学风化作用十分强烈.丰富的降水,导致中新世老成土层发生淋溶作用,磁铁矿在向下淋溶迁移过程中逐渐氧化为磁赤铁矿和赤铁矿,铁氧化物最终在红土矿层淀积,磁赤铁矿经高温压实作用再结晶转化为赤铁矿.磁性矿物转化过程可概括为磁铁矿—磁赤铁矿化的磁铁矿—磁赤铁矿—赤铁矿,其中部分磁赤铁矿具有热稳定性,在空气(氩气)环境中加热到700℃未发生转化.     

Integration of magnetism and heavy metal chemistry of soils to quantify the environmental pollution in Kathmandu, Nepal

Abstract Soil profiles of the Kathmandu urban area exhibit significant variations in magnetic susceptibility (χ) and saturation isothermal remanence (SIRM), which can be used to discriminate environmental pollution. Magnetic susceptibility can be used to delineate soil intervals by depth into normal (< 10^?7 m³/kg), moderately enhanced (10^?7–< 10^?6 m³/kg) and highly enhanced (≥ 10^?6 m³/kg). Soils far from roads and industrial sites commonly fall into the ‘normal’ category. Close to a road corridor, soils at depths of several centimeters have the highest χ, which remains high within the upper 20 cm interval, and decreases with depth through ‘moderately magnetic’ to ‘normal’ at approximately 30–40 cm. Soils in the upper parts of profiles in urban recreational parks have moderate χ. Soil SIRM has three components of distinct median acquisition fields (B_1/2): soft (30–50 mT, magnetite‐like phase), intermediate (120–180 mT, probably maghemite or soft coercivity hematite) and hard (550–600 mT, hematite). Close to the daylight surface, SIRM is dominated by a soft component, implying that urban pollution results in enrichment by a magnetite‐like phase. Atomic absorption spectrometry of soils from several profiles for heavy metals reveals remarkable variability (ratio of maximum to minimum contents) of Cu (16.3), Zn (14.8) and Pb (9.3). At Rani Pokhari, several metals are well correlated with χ, as shown by a linear relationship between the logarithmic values. At Ratna Park, however, both χ and SIRM show significant positive correlation with Zn, Pb and Cu, but poor and even negative correlation with Fe (Mn), Cr, Ni and Co. Such differences result from a variety of geogenic, pedogenic, biogenic and man‐made factors, which vary in time and space. Nevertheless, for soil profiles affected by pollution (basically traffic‐related), χ exhibits a significant linear relationship with a pollution index based on the contents of some urban elements (Cu, Pb, Zn), and therefore it serves as an effective parameter for quantifying the urban pollution.     

Paddy soil — A suitable target for monitoring heavy metal pollution by magnetic proxies

A preliminary magnetic study around Meishan steel mill in Nanjing (SE China) was carried out combining geochemical analysis with scanning electron microscopy (SEM) to prove that paddy soil can be a suitable target for environmental study on heavy metal pollution. Magnetic background investigation showed a strong variation in this area due to different land uses and soil types. Magnetic susceptibilities (MS) measured on forest soils are much higher than in paddy fields, and values below 20 cm of the soil surface in forest with parent material of Xiashu loess are several times higher than in paddy soil with parent material of fluvisol. Measurements on vertical profiles show that paddy soil has a very low and stable magnetic background with mass-specific MS around 15 × 10^{− 8} m³ kg^{− 1}. A strong enhancement of MS values is found in the upper ~ 20 cm of paddy soil predominated by multidomain and pseudo single domain magnetite. However, relatively low S-ratios (0.57 to 0.85) reveal a significant contribution of imperfect anti-ferromagnetic minerals. Detailed research on a paddy soil core at site C719 near the steel mill indicates strong correlation between magnetic mineral concentration-related parameters (χ, ARM, SIRM) and heavy metal concentrations of Cu, Pb and Zn. In addition, typical anthropogenic Fe-spherules are detected in top paddy soil by means of SEM, which indicates that the increase of susceptibility in upper soil is mainly caused by steel mill emission. Mapping of MS in paddy fields across the steel mill area shows a decrease of MS with the distance to the major emission zone. Positive correlation between χ and Zn is found by measuring surface soil samples around the steel mill. Because of low background and high homogeneity of the ~ 20 cm uppermost mixing layer paddy fields are especially suitable for magnetic surface mapping of heavy metal pollution.     

西安市道路灰尘磁学特征及其对环境的响应

西安市道路表面灰尘样品的环境磁学研究显示磁化率(χ)、非磁滞磁化率（χ_ARM）以及饱和等温剩磁（SIRM）均比较高,表明样品中磁性矿物含量较高.其中磁化率（χ）主要受人类活动强度影响,而非磁滞磁化率（χ_ARM）及饱和等温剩磁（SIRM）则由人为活动强度和磁性矿物种类共同决定.κ-T曲线以及等温剩磁（IRM）获得曲线显示样品中磁铁矿和磁赤铁矿等亚铁磁性矿物占主导,并可能含有少量的单质铁,其相对含量与人类活动种类有关：与单纯的交通排放及冶金活动相比,密集的人群流动可带来更多的单质铁矿物.磁畴图谱显示磁性矿物粒径变化不大,以准单畴及多畴颗粒等粗颗粒为主,明显大于成土作用形成的磁性颗粒.综合磁性矿物含量种类以及粒径可辨别污染及污染来源,提供污染监测的磁学手段,并初步进行污染来源划分.     

Comparative study on magnetic minerals of tidal flat deposits from different sediment sources in Jiangsu coast,Eastern China

Understanding the sources of sediments deposited in tidal flats is critical for reconstructing the evolution of coastal regions impacted by large rivers. Environmental magnetism can be an effective tool to track sediment sources and analyze the sediment properties. We evaluate several magnetic parameters from the tidal flat sediments along the Jiangsu coast. The results show that the sediments of Liandao Island have the lowest values of magnetic susceptibility (χ), anhysteretic remanent magnetization (ARM) and saturation isothermal remanence magnetization (SIRM). In addition to these, the values of χ, ARM and SIRM display a generally increasing trend from the north to the south along the Jiangsu coast. The strong relations between χ, ARM and SIRM show that the changes of magnetization of the tidal flat sediments mainly reflect the changes of concentration rather than those in grain sizes of magnetic particles. The main magnetic phase is magnetite, with a small amount of hematite. The strong relationship between χ and the 2-16 μm grain-size fraction suggests that magnetite is enriched in the finer silt fraction. The sediment sources is the main factor that influences the magnetic properties of the tidal flat sediments from the Jiangsu coast. Combined with the previous studies, the results indicate that the tidal flat sediments of Liandao Island were mainly derived from the nearshore rock weathering. The Yellow River is the dominant supplier for the north of Dafeng, while the Yangtze River is the dominant supplier for the south of Rudong. The coast between Dafeng and Rudong is a transition zone influenced by both rivers. This study provides a basis against which possible future variations in sediment composition resulting from catchment changes can be assessed.     

Magnetic properties and heavy metal pollution of soils in the vicinity of a cement plant,Xuzhou (China)

This study characterized the magnetic property and levels of heavy metals of the topsoils near a cement plant. The concentrations of five selected heavy metals (Pb, Cu, Zn and Cd) were measured on 32 topsoil samples (0–20 cm) collected near a cement plant via inductively coupled plasma/mass spectroscopy (ICP-MS). The orders of enrichment factors (EF), on average, were Cd (7.3) > Cu (3) > Zn (2.9) > Pb (2.1), respectively. A self-organizing map (SOM) was applied to the concentrations of heavy metals for “correlation hunting”. Mineral magnetic concentration parameters, such as the specific magnetic susceptibility (χ), susceptibility of anhysteretic remanent magnetization (χ_ARM), saturation isothermal remanent magnetization (SIRM), together with interparametric ratios (such as IRM_− 100mT/SIRM, SIRM/χ, χ_ARM/SIRM) show that ferrimagnetic, superparamagnetic (SP) and multi-domain (MD) minerals dominated the soils. The results of correlation analysis indicate that copper showed a significant correlation with χ, χ_ARM and SIRM but such a relationship with χ, χ_ARM and SIRM was only weakly identified for Zn, Cd and Pb.     

贵州省麦岗水库沉积物磁性特征及其与粒度的关系

对贵州省麦岗水库沉积物环境磁性特征的研究表明,亚铁磁性矿物主导了沉积物矿物磁性特征,但同时也存在反铁磁性矿物等其他矿物,超顺磁颗粒在沉积物中广泛存在.在所选矿物磁性参数中,χlf、χfd、SOFT与粒度不相关;χARM、SIRM、F300与粒度相关,但相关系数不高;χARM/χlf、χARM/SIRM和粒度显著相关,可以作为粒度的代用指标.研究结果显示,磁性参数确实可以作为粒度的代用指标.但对比研究表明,在不同沉积环境,甚至相似沉积环境的沉积物中,矿物磁性参数和粒度的关系可能不同,在特定沉积环境中,利用磁性参数作为粒度的代用指标应该在充分研究的基础上进行,使研究结果更为可靠.     

巢湖沉积物磁性特征及其对沉积动力的响应

对巢湖西部柱样以及杭埠河流域土壤的环境磁学研究表明,磁铁矿是决定磁性特征的主要磁性矿物,杭埠河流域是巢湖西部沉积物的主要来源．靠近巢湖西岸的柱样AC1砂含量较高,X、SIRM值较大而xARM／SIRM较低,说明磁铁矿含量较高、颗粒较粗．距岸稍远的柱样AC2砂含量较低,X、SIRM值也较低,其变化与XARM较相似,与粘土含量变化也有一定程度的相似,AC2沉积物X、SIRM值较ACI小,但XARM／SIRM较高,说明磁铁矿含量较低且颗粒较细．杭埠河流域土壤的磁性测量结果表明,砂、砾含量高的粗骨土磁性最强,富含粗颗粒磁铁矿．巢湖柱样沉积物砂的含量随踞岸远近而不同, 反映了沉积环境的水动力不同,由此产生明显的磁性特征差异,实质是对沉积动力的响应．研究表明磁性参数XARM／SIRM 可以间接反映沉积物中粘土含量的高低变化．     

ARM,TRM and magnetic interactions: Concentration dependence

ARM (anhysteretic remanence)/SIRM (saturation isothermal remanence) and TRM (thermoremanence)/SIRM were measured as a function of the concentration (volume fraction) of single-domain magnetite (3 × 10^?6 ? C ? 2 × 10^?2), ARM/SIRM increases with decreasing concentration, showing that there is magnetic interaction between fine particles. The role of magnetic interaction in TRM acquisition is also important at higher concentrations of magnetite (C ? 0.1%), where the value of TRM/SIRM increases with decreasing concentration. It is only for concentrations ofC ? 0.1% that the value of TRM/SIRM is fairly constant and interactions among magnetite grains seem to be ignored. The ratio TRM/ARM decreases from seven to almost unity as the concentration of magnetite decreases.     

A comparison of different magnetic methods for determining the relative grain size of magnetite in natural materials: Some results from lake sediments

A new rapid method for identifying relative grain size variations in magnetic involves the parameter anhysteretic susceptibility (χ_ARM, i.e. specific ARM obtained in a 1 Oe steady field), which is particularly sensitive to the single domain (SD) and small pseudo-single domain (PSD) grains of the finer magnetite fraction. A second parameter, low-field susceptibility (χ), is relatively more sensitive to the coarser magnetite fraction (larger PSD and smaller multidomain (MD) grains). We can then obtain a measure of the ratio of coarse- to fine-grain magnetite for large numbers of samples by plotting χ_ARversusχ. A simple idealized model based on sized magnetite samples is proposed to explain the use of the χ_ARMversusχ plot for detecting relative grain-size changes in the magnetic content of natural materials. The sediments of three lakes that contain magnetite or a similar magnetic carrier and have a wide range of values of χ_ARM and χ are used to test the model.The model is used to interpret the magnetic variations observed, and the interpretations are supported by high-field hysteresis measurements of the same sediments. The combination of the high-field hysteresis method of Day et al. [1] and the χ_ARM vs. χ method is a powerful technique allowing the rapid identification of both the relative grain size and domain state for large numbers of samples containing magnetite. The χ_ARMvs.χ method should be used as an intial means of identifying distinct groups of samples.The high-field hysteresis method should then be applied to a few representative samples from each group to confirm the initial interpretation.     

Use of magnetic measures to assess soil redistribution following deforestation in hilly region

Limited information is available about the use of magnetic susceptibility property to determine soil redistribution in hilly areas of the semi-arid regions. This study was conducted to evaluate the use of magnetic properties to determine soil redistribution along a hill slope following deforestation. The study area is located in the Quaternary hilly region of Lordegan district in west Iran. Ten transects were established in two land uses that included natural Querqus forested and cultivated lands. Soil samples were collected at different positions along the slope and magnetic properties (χlf, χhf, SIRM, ARM, and χfd) and selected physico-chemical properties were determined. The results (based on the χfd, SIRM/ARM) showed that the magnetic susceptibly in the calcareous materials is pre-dominantly derived during the pedogenic processes and the superparamagnetic particles which were transported to lower positions of hill slope following deforestation. The results confirmed that this methodology could be applied for monitoring soil redistribution along the slope in calcareous hilly areas in the semi-arid regions.