Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation
[Objective] The physical properties and their internal differentiations, and the mineral compositions and chemical elements of Benggang soil were studied in order to provide a theoretical reference for a better understanding on the benggang erosion processes. [Methods] Taking three typical Benggangs...
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Science Press
2022-04-01
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| Series: | Shuitu baochi tongbao |
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| Online Access: | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220206 |
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| author | Zhuo Ruina Liu Xilin Yue Meng |
| author_facet | Zhuo Ruina Liu Xilin Yue Meng |
| author_sort | Zhuo Ruina |
| collection | DOAJ |
| description | [Objective] The physical properties and their internal differentiations, and the mineral compositions and chemical elements of Benggang soil were studied in order to provide a theoretical reference for a better understanding on the benggang erosion processes. [Methods] Taking three typical Benggangs in Deqing County, Guangdong Province as examples, the methods of screening, drying, laser particle size analysis, liquid plastic limit analysis, X-ray diffraction analysis, and X-ray fluorescence spectrometry were used, to measure the basic physical properties, mineral composition and chemical elements in the different landform positions of the Benggang soil. [Results] ① Soil bulk densities of the headwalls were slightly larger than those of the colluvium, gully and diluvial fan. The water contents and limit water content of headwalls and colluvium were greater than those of the gully and diluvial fan. ② The median particle sizes of the soils were headwall < colluvium < gully sediments < diluvium. Grain size distributions of the headwall and colluvium were bimodal, and those of the gully sediments and diluvium were single peak. ③ The mineral composition of the soils was mainly clay mineral Kaolinite, and followed by Quartz and Muscovite. The chemical components contained SiO2 and Al2O3, which were the top two in content. The content of Ti was the highest, and followed by S. [Conclusion] The physical properties of soil in different topographic position of the Benggangs displayed a certain differentiation phenomena from headwall to diluvium, and the hydraulic gravity composite erosion mechanism was the reason for the formation of this internal differentiation. Under strong chemical weathering, the composition of clay minerals was mainly composed of Kaolinite, and there was no obvious element migration and enrichment in the Benggangs. |
| format | Article |
| id | doaj-art-95d121fe3ba94660a53e511e58b8aad3 |
| institution | Kabale University |
| issn | 1000-288X |
| language | zho |
| publishDate | 2022-04-01 |
| publisher | Science Press |
| record_format | Article |
| series | Shuitu baochi tongbao |
| spelling | doaj-art-95d121fe3ba94660a53e511e58b8aad32024-12-30T03:45:36ZzhoScience PressShuitu baochi tongbao1000-288X2022-04-01422384510.13961/j.cnki.stbctb.2022.02.0061000-288X(2022)02-0038-08Physical and Chemical Properties of Benggang Soils and Their Interior DifferentiationZhuo Ruina0Liu Xilin1Yue Meng2School of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, ChinaSchool of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, ChinaSchool of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China[Objective] The physical properties and their internal differentiations, and the mineral compositions and chemical elements of Benggang soil were studied in order to provide a theoretical reference for a better understanding on the benggang erosion processes. [Methods] Taking three typical Benggangs in Deqing County, Guangdong Province as examples, the methods of screening, drying, laser particle size analysis, liquid plastic limit analysis, X-ray diffraction analysis, and X-ray fluorescence spectrometry were used, to measure the basic physical properties, mineral composition and chemical elements in the different landform positions of the Benggang soil. [Results] ① Soil bulk densities of the headwalls were slightly larger than those of the colluvium, gully and diluvial fan. The water contents and limit water content of headwalls and colluvium were greater than those of the gully and diluvial fan. ② The median particle sizes of the soils were headwall < colluvium < gully sediments < diluvium. Grain size distributions of the headwall and colluvium were bimodal, and those of the gully sediments and diluvium were single peak. ③ The mineral composition of the soils was mainly clay mineral Kaolinite, and followed by Quartz and Muscovite. The chemical components contained SiO2 and Al2O3, which were the top two in content. The content of Ti was the highest, and followed by S. [Conclusion] The physical properties of soil in different topographic position of the Benggangs displayed a certain differentiation phenomena from headwall to diluvium, and the hydraulic gravity composite erosion mechanism was the reason for the formation of this internal differentiation. Under strong chemical weathering, the composition of clay minerals was mainly composed of Kaolinite, and there was no obvious element migration and enrichment in the Benggangs.http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220206benggang soilphysical and chemical propertyinterior differentiationguangdong province |
| spellingShingle | Zhuo Ruina Liu Xilin Yue Meng Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation Shuitu baochi tongbao benggang soil physical and chemical property interior differentiation guangdong province |
| title | Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation |
| title_full | Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation |
| title_fullStr | Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation |
| title_full_unstemmed | Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation |
| title_short | Physical and Chemical Properties of Benggang Soils and Their Interior Differentiation |
| title_sort | physical and chemical properties of benggang soils and their interior differentiation |
| topic | benggang soil physical and chemical property interior differentiation guangdong province |
| url | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220206 |
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