Study on Fractal Characteristics of Soil Particles with Different Rocky Desertification Intensity in Karst Area of Northwest Guangxi
The karst area of northwest Guangxi is a representative subtropical karst region in China,severely affected by rocky desertification.To investigate the fractal characteristics of soil particles under different rocky desertification intensities and their relationship with soil physical and chemical properties,soils from three typical karst areas-Chengjiang Township in Du'an Yao Autonomous County,Baima Township in Dahua Yao Autonomous County,and Natao Township in Bama Yao Autonomous County-were selected for analysis.The study examined rocky desertification intensity,soil physical and chemical properties,changes in soil particle fractal dimensions,and their interrelationships.A significant negative correlation was found between the fractal dimension of soil particles and the intensity of rocky desertification(P<0.05).The fractal dimension of soil particles showed significant correlations with soil physical indicators such as particle size distribution,bulk density,water content,and total porosity,as well as chemical indicators such as total nitrogen,total phosphorus,total potassium,and organic matter content(P<0.05).These findings indicate that the fractal dimension of soil particles accurately reflects the intensity of rocky desertification in the karst area of northwest Guangxi,providing a new method for quantitatively characterizing rocky desertification soil quality and guiding soil improvement and ecological restoration in karst regions of China.
karst region in northwest Guangxisoil physical and chemical propertiesfractal dimension of soil particlesfractal characteristics
国家科技期刊平台
NSTL
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