[1]GAO Chuanyou,ZHAO Qinghe,LIU Qian.Fractal Characteristic of Soil Particle Size Under Different Vegetation Types in Riparian Zone of the Main Stream of Beijiang River[J].Research of Soil and Water Conservation,2016,23(03):37-42.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
37-42
Column:
Public date:
2016-06-28
- Title:
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Fractal Characteristic of Soil Particle Size Under Different Vegetation Types in Riparian Zone of the Main Stream of Beijiang River
- Author(s):
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GAO Chuanyou1, ZHAO Qinghe2,3, LIU Qian2,3
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1. Guangxi Vocational and Technical College, Nanning 530226, China;
2. Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng, He’nan 475004, China;
3. College of Environment and Planning, He’nan University, Kaifeng, He’nan 475004, China
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- Keywords:
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soil particle size distribution; fractal dimension; vegetation types; riparian zone; Beijiang River
- CLC:
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S152.3
- DOI:
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- Abstract:
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Taking 4 kinds of vegetation types such as bamboo forest, eucalyptus forest, mixed forest, and grassland as research samples, we investigated the soil particle size distribution (PSD) and fractal dimension (D) characteristics as well as their relationships with other basic soil physicochemical properties based on the field survey and laboratory experiment. The results indicated that soil structure in Beijiang River riparian zone was good with D value of 2.79, soil texture was uniform, and the soil PSD was homogeneous with silt, sand, and clay contents of 40.66%, 36.59%, and 22.75%, respectively. However, spatial variation of soil particle increased with increase of soil particle size. Pearson correlation analysis indicated that D value was significantly related with PSD, namely, D value increased with increase of silt and clay contents and decrease of sand content. D value and PSD varied obviously between different vegetation types, therein, the sand content followed the order of bamboo forest > mixed forest > grassland > eucalyptus forest, while the D value, silt content, and clay content presented the same change rule, in the order of eucalyptus forest > grassland > mixed forest > bamboo forest. Moreover, ANOVA result showed that, with regarding to effect of vegetation type on soil structure, there was significant difference between bamboo forest and eucalyptus forest, while insignificant deference between other vegetation types was observed. Relationship between D value and PSD and other soil physicochemical properties showed that both D value and clay content were correlated significantly and negatively with nitrate nitrogen content (p < 0.05) and then were correlated significantly and negatively with total phosphorus content (p < 0.05). Soil sand content was significantly negatively correlated with soil moisture content at the 0.05 level, and then soil silt content was only significantly negatively correlated with soil moisture content. In addition, the correlations between D value, sand, silt, clay contents and total organic carbon and total nitrogen contents were not significant. In summary, riparian soil is influenced simultaneously by various factors, and the relationship between its physicochemical properties is significantly different from the other landscape.