[1]Diao Erlong,Cao Guangchao,Cao Shengkui,et al.Soil Particle Size and Fractal Characteristics at Different Scales[J].Research of Soil and Water Conservation,2024,31(05):212-220.[doi:10.13869/j.cnki.rswc.2024.05.015]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 05
Page number:
212-220
Column:
Public date:
2024-08-10
- Title:
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Soil Particle Size and Fractal Characteristics at Different Scales
- Author(s):
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Diao Erlong1,2, Cao Guangchao2, Cao Shengkui1,2, Yuan Jie1,2, Tong Shan1,2, Qiu Xunxun1,2
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(1.Qinghai Provincial Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining 810008, China; 2.Key Laboratory of Qinghai-Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810008, China)
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- Keywords:
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scale; soil particle size; fractal characteristics
- CLC:
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S152.3
- DOI:
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10.13869/j.cnki.rswc.2024.05.015
- Abstract:
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[Objective]Soil particle size and fractal characteristics vary depending on the scale of the study. The aims of this study are to explore the heterogeneity of soil particle size and fractal characteristics at different scales, and to clarify the influence of scale effects on soil particle size and fractal characteristics. [Methods]The Heihe River source area and the Babao River basin were taken as the study area. One-way analysis of variance(ANOVA)was utilized to test the significance of differences in soil particle size and fractal dimension at different scales. Pearson correlation analysis was conducted to investigate the correlation between soil fractal dimension and environmental factors at different scales. geographical detector modeling was employed to explore the impact of environmental drivers of soil fractal dimension at different scales. [Results](1)In the Heihe River source area and the Babao River basin, the soil particle sizes were predominantly silt and sand. As the study scale expanded to the Heihe River source area, the spatial variability of soil clay, silt, sand, and fractal dimension(D)increased. Soil clay, silt, and sand exhibited moderate variation, whereas D showed weak variation.(2)There were variations in soil particle composition and distribution in different land use types, which was influenced by different research scales. When compared to the Babao River small watershed, the heterogeneity of soil particle size distribution(PSD)frequency curves in the Heihe River source area was higher across three land use types, indicating a trend towards coarser soil texture.(3)Both Pearson correlation analysis and geographical detector results indicated that soil particle size had a significantly greater influence on D compared to other factors, and D could effectively characterize soil texture. [Conclusion]There is clear heterogeneity in soil particle size and fractal dimension at different scales, which is influenced by a comprehensive action of environmental factors at different scales.