Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Chine → 2021 → The Influence of Wind Forming on the Physical and Chemical Properties of the Sediments in the Desert West of Langshan

Inner Mongolia Agricultural University (内蒙古农业大学) 2021

The Influence of Wind Forming on the Physical and Chemical Properties of the Sediments in the Desert West of Langshan

刘娜娜

Titre : The Influence of Wind Forming on the Physical and Chemical Properties of the Sediments in the Desert West of Langshan

Auteur : 刘娜娜

Grade : Master 2021

Université : Inner Mongolia Agricultural University (内蒙古农业大学)

Résumé partiel
Wind is the main external force of erosion,transportation and deposition of surface materials in arid areas.The formation and development of aeolian sand landforms mainly include two processes:wind erosion and aeolian deposition.In this process,the corresponding structural characteristics of sediments are produced,and the mineral and geochemical characteristics are further changed in addition to the grain size composition characteristics of sand materials.The desert to the west of Langshan mainly includes Baiyinchagan desert,boketai desert,yamarek desert and Haihai desert.At present,there are few reports on the grain size composition and geochemical characteristics of the desert sediments to the west of Langshan Mountain.By comparing the spatial distribution differences of grain size composition and geochemical characteristics of different deserts and surrounding Gobi sediments to the west of Langshan Mountain,this thesis reveals the influence of Aeolian process on the physical and chemical properties of sediments in arid areas.(1)The debris particles(<2mm)in the west of Langshan are mainly SiO2,Al2O3and Fe2O3,accounting for more than 80%of the total.With the increase of sediment particle size,the content of SiO2increases,while the content of Fe2O3,MgO,CaO and Al2O3decreases,while the content of K2O and Na2O does not change obviously.The process of aeolian sand activity changes the composition of sediments and significantly affects the geochemical characteristics of sediments,which is characterized by the difference of Aeolian composition

Mots clés : Sediment ;Grain size characteristics ;Geochemical characteristics ;Aeolian process ;Desert West of Langshan ;

Présentation (CNKI)

Page publiée le 21 février 2022