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现代土壤磁化率空间分布特征及成壤影响因素分析——以桑干河阳原段为例
投稿时间:2019-08-09  修订日期:2019-12-10  点此下载全文
引用本文:焦天,董进,汤文坤,迟振卿,王永,庞健锋,孙楠.2020.现代土壤磁化率空间分布特征及成壤影响因素分析——以桑干河阳原段为例[J].地质论评,(1):229-244,[DOI]:.
JIAO Tian,DONG Jin,TANG Wenkun,CHI Zhenqing,WANG Yong,PANG Jianfeng,SUN Nan.2020.The spatial variability of modern topic magnetic susceptibility and its pedogenesis influencing factors study based on Sanggan River in Yangyuan County, Hebei[J].Geological Review,(1):229-244.
DOI:10.16509/j.georeview.2020.01.017
摘要点击次数: 66
全文下载次数: 72
作者单位E-mail
焦天 中国地质科学院地质研究所北京, 100037 Email: djin@cags.ac.cn 
董进 中国地质科学院地质研究所北京, 100037  
汤文坤 中国地质科学院地质力学研究所北京, 100081  
迟振卿 中国地质科学院地质研究所北京, 100037  
王永 中国地质科学院地质研究所北京, 100037  
庞健锋 中国地质科学院地质研究所北京, 100037  
孙楠 北京东方纵横产品检测有限公司北京101102  
基金项目:注: 本文为国家自然科学基金资助项目(编号:41372172)和中国地质调查局地质大调查项目(编号:DD2019060、DD2016012)和中国地质科学院地质研究所基本科研业务费项目(编号:J1603)的成果
中文摘要:为了揭示影响成壤作用发生的主要因素,对河北省阳原县桑干河流域表层土壤开展常规土壤指标和环境磁学参数的地统计学分析,结果表明,土壤的频率磁化率(χfd20)、Eh值、有机质、黏土—粉砂含量等参数的空间分布特征受控于研究区的高程,而土壤的含水量、铁游离度和活化度的空间分布特征受控于坡向。因此,在影响成壤作用的五大因素(母质、气候、地形、有机质、时间)中,地形(高程、坡向)是影响研究区成壤作用强弱的主要因素。此外,虽然前人发现频率磁化率和铁游离度都能反映铁氧化物含量和成壤作用强弱,但本次研究通过对比空间分布特征发现,频率磁化率与有机质、Eh值等土壤指标有较好的相似性,且与耕地类型分布一致,所以,相对于铁游离度,频率磁化率更能反映研究区土壤发育状况。
中文关键词:频率磁化率  成壤作用  Kriging插值  空间变异性  影响因素
 
The spatial variability of modern topic magnetic susceptibility and its pedogenesis influencing factors study based on Sanggan River in Yangyuan County, Hebei
NameInstitution
JIAO TianInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037
DONG JinInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037
TANG WenkunInstitute ofGeomechanics, China Academy of Geological Science, Beijing, 100081
CHI ZhenqingInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037
WANG YongInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037
PANG JianfengInstitute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037
SUN NanBeijing East Allreach Certification Center Corporation, Ltd. , Beijing, 101102
Abstract:Objectives: Although previous researchers were devoted to analyze the characteristics and mechanism of soil magnetism, mostly soil vertical profiles, very little work about lateral profiles have been employed. So we attempt to understand spatial distribution of different soil magnetic parameters and reveal the major influencing factors of soil pedogenesis.Methods: The paper primarily takes advantage of geo statistical methods to analyze spatial variability of conventional soil indexesand environmental magnetic parameters of topsoil in the Sanggan River Basin in Yangyuan County, Hebei Province. Besides, some basic approaches, such as descriptive and correlation analysis et al., can help us to comprehend the process of soil forming.Results: The results of correlation coefficient for magnetic parameters show that total magnetic contents are mainly affected by superparamagnetic particles. The semi variogram suggests human activities, for instance, apply fertilizer, cropping system et al., almost have no influence on magnetic susceptibility(χlf), frequency dependent magnetic susceptibility(χfd)and the percentage of frequency dependent magnetic susceptibility(χfp). Above all, the spatial distribution patterns show that soil frequency dependent magnetic susceptibility (χfd), Eh, organic matter, clay—silt content, heavy metals et al. are controlled by elevation, while the moisture, free iron oxide and active iron are limited by aspect, speculating that elevation affect soil development by hydrodynamic change, and the aspect change moisture by winter monsoon, so we can conclude that topography (elevation, aspect) is the most important factor for soil pedogenesisamongfive soil influencing factors(parent rock,climate, topography, organic matter, time). Besides, in former study, the frequency dependent magnetic susceptibility and free iron oxide can reflect the content of iron oxide/hydroxides and soil pedogenesis, but in this study, the spatial characteristics of frequency dependent magnetic susceptibility appear to be more similar to organic matter, Eh et al., in particular, arable land, compared with free iron oxide. Thus we conclude that frequency dependent magnetic susceptibility is better to indicate soil pedogenesis.Conclusions: Frequency dependent magnetic susceptibility and frequency dependent magnetic susceptibility percentage are mainly controlled by topography in this study, in addition, these two index can instruct us to comprehend soil pedogenesis.Acknowledgements: This study was financially supported by the National Science Foundation of China ( Nos. 41372172), the Chinese Geological Survey Project ( Nos. DD20190602 and 20160120) and the Basic Scientific Research Funding from the Institute of Geology, Chinese Academy of Geological Sciences (No. J1603).We would like to express our thanks to Dr. Wang Hongqiang from Institute of Geophysics, China Earthquake Administration and Dr. Wang Dan from Institute of Geology, Chinese Academy of Geological Sciences. We also thank the reviewers and editors for their valuable suggestions and comments.
keywords:frequency dependent magnetic susceptibility  pedogenesis  Kriging interpolation  spatial variability  influencing factors
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