Fractal dimension of soil particles under different plant communities in mountainous area

[摘要] To explore soil physical property improvement of different plant communities in mountainous area of middle Shandong province, influences of 11 local plant communities on soil particle composition and particle size distribution were studied based on the soil fractal theory and method. First, relative weight contents of different sizes of soil particles were tested by mechanical sieving method. Second, fractal dimension of soil particles were calculated according to mass of soil particles. Results show that: soil particle size under different plant communities ranges between 0.25-1.0mm and the soil structure of stands is significantly better than that of slope wasteland. D of 11 plant communities is between 2.0044-2.4925, showing that mixed forest > pure forest > economic forest > farmland > slope wasteland. Moreover they are most sensitive to soil particles (2 = 0.901).The experiment results can provide theoretical references and technical supports to tree species selection and stand structural configuration during vegetation recovery and reconstruction in mountainous area of middle Shandong province.

[发布机构] Department of Landscape Architecture, School of Geography, Geomatics and Planning, Jiangsu Normal University, Xuzhou; 221116, China^1

[效力级别] 无线电电子学

[关键词] Mechanical sieving;Positive correlations;Soil particle size;Soil physical property;Structural configurations;Technical support;Tree species selections;Vegetation recovery