Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Typical Soil Profiles of Muchuan County, Sichuan Province [PDF]
, 2023 BACKGROUNDSoil is a precious resource for human survival and social development. The quality of the soil environment is impacted by a variety of issues due to the social economy’s rapid expansion, and the issue of heavy metal contamination in farmed land
Bixia LIAO, Ling HE, Wenling SHEN
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Evaluation and Source of Heavy Metal Pollution in Surface Soils in Typical Alpine Agricultural Areas of Qinghai Province [PDF]
, 2023 BACKGROUNDHeavy metal pollution in soils is often the result of multiple genetic sources and action paths. Simple identification of the sources of heavy metals is not enough to provide sufficient information for the control of regional heavy metal ...
Jianqiang LI +5 more
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岩浆母质对蚀变粘土矿物的约束:以贵州新民剖面 P-T界线附近火山灰层为例
, 2017 目前对于粘土层中伊蒙混层矿物的堆垛结构、单元层含量与岩浆母质及环境条件关系的了解等，仍然十分匮乏.一定沉积环境下火山灰层中粘土矿物组合、以及伊蒙混层堆垛方式精细结构特征，可能记录了沉积(包括成岩作用) 环境对火山物质蚀变产物的影响.采用X射线衍射(XRD)、扫描电子显微镜(SEM)、元素地球化学分析、氧同位素分析方法等方法，对贵州新民深海相二叠系-三叠系(P-T) 界线附近蚀变火山灰层的地球化学特征、粘土矿物精细结构特征等进行了深入研究.结果表明，4个火山灰粘土层均含有2种具有R3结构 ...
洪汉烈 +9 more
semanticscholar +1 more source
东秦岭南召县五朵山岩体二云母花岗岩地球化学、锆石U-Pb年代学及地质意义
Earth Science-Journal of China University of Geosciences, 2019 秦岭造山带地处华北板块与扬子板块结合带，经历了复杂的构造演化过程，其板块拼合机制及碰撞时限一直备受争议.对东秦岭南召县五朵山岩体二云母花岗岩进行岩石地球化学和LA-ICP-MS锆石U-Pb年代学研究，结果表明岩石具有高硅（SiO2=69.32%~74.28%）、高铝（Al2O3=14.14~17.28）、高碱含量（Na2O+K2O=7.68%~9.03%）等特征，且相对富钾贫钠，在岩石类型上属于强过铝质'S'型花岗岩类.岩石具有中等的稀土元素含量，呈现轻稀土富集、重稀土亏损的右倾配分模式 ...
李开文 +5 more
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Characteristics of a Typical Tamarix Hohenackeri Shrub Resource Island in Qaidam Basin Under Prevailing Wind [PDF]
, 2022 [Objective] The characteristics of a typical Tamarix hohenackeri shrub resource island in Nuomuhong area of Qaidan Basin under the action of prevailing winds were studied in order to deeply understand the ecological significance of tamarisk shrubs in ...
Cao Guangchao +7 more
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Protective Effect of Shelterbelt on Strip Fields in Southwest Margin of Taklimakan Desert [PDF]
, 2023 [Objectives] The windbreak efficiency of shelterbelts with different permeability on strip fields at the edge of the oasis in the Taklamakan Desert was analyzed in order to provide theoretical guidance for sustainable development of local grid strip ...
Cai Kaixu +3 more
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Characteristics of Soil Physical Property Improvement and Carbon Sequestration for Agroforestry in Yellow River Flood Plain [PDF]
, 2022 [Objective] The effects of different agroforestry systems on soil physical properties, especially carbon sequestration, in the Yellow River flood plain was determined, in order to provide scientific guidance for optimizing regional agroforestry systems ...
Dong Zhi +5 more
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Shuitu Baochi Xuebao, 2021 通过野外采样和室内分析相结合，以广东省赤红壤区花岗岩（G）、第四纪红土（Q）和砂页岩（S）母质发育的林地（FL）、水田（PF）和旱地（UL）土壤为研究对象，分析了土壤团聚体有机碳及其组分和不同形态铁氧化物含量，探究了其对土壤团聚体稳定性的影响及贡献。结果显示：（1）3种母质发育的3种利用方式土壤团聚体均以>0.25 mm为主，2~5 mm团聚体以花岗岩母质发育林地土壤最高（58.51%），0.25~2 mm团聚体以花岗岩（62.93%）和第四纪红土（59.21%）母质发育水田和旱地土壤最高 ...
唐贤 +5 more
doaj
Effects of Desertification on Phosphorus Fractions of Alpine Meadow Soils [PDF]
, 2023 [Objective] Soil phosphorus fractions determine the migration and availability of phosphorus during soil evolution. The spatial distribution characteristics of soil phosphorus fractions in alpine meadows under different desertification levels were ...
Gao Yongheng +5 more
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Comparison of Infiltration Capacity Between Grassland of Different Time Lengths of Abandonment and Sea Buckthorn Land in Inner Mongolia [PDF]
, 2023 [Objective] The effect of different vegetation covers on soil infiltration capacity in Inner Mongolia was analyzed in order to provide a theoretical basis for ecological restoration and vegetation allocation of the region.
Cheng Shuai +5 more
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