[1]ZHANG Xiao-juan,GAO Zhao-liang,LI Jing,et al.Variation of Soil Nutrients and Mode of α Diversity of Plant Community on the Embankment Slope of Highways in Guanzhong Plain[J].Research of Soil and Water Conservation,2012,19(06):157-162.
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Variation of Soil Nutrients and Mode of α Diversity of Plant Community on the Embankment Slope of Highways in Guanzhong Plain
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 06
Page number:
157-162
Column:
Public date:
2012-12-20
- Title:
- Variation of Soil Nutrients and Mode of α Diversity of Plant Community on the Embankment Slope of Highways in Guanzhong Plain
- Keywords:
- Guanzhong plain; embankment slope of highway; soil nutrient; variation mode of α diversity of plant community; principal component analysis
- CLC:
- S154.4
- DOI:
- -
- Abstract:
- The embankment slope of Highways with different years of vegetation restoration in Guanzhong Plain was selected as the study site. The dynamic changes of soil nutrient and variation mode of αdiversity of plant community of vegetation restoration were examined based on the correlation analysis and principal component analysis methods. The results indicated that: in topsoil, the change range of soil organic matter values of embankment slope of vegetation restoration was 2.26~25.83 g/kg, 0.60~1.25 g/kg for total N, 7.16~35.10 mg/kg for ammonium N, 4.15~7.42 mg/kg nitrate N, and 9.30~26.68 mg/kg for available P. In the process of vegetation restoration, the characteristic of soil nutrient was closely related with the recovery period, the depth of soil layer and the slope gradient. The content of soil nutrient obviously increased with the extension of vegetation restoration time, indicating that effect of vegetation on soil fertilization was related to the restoration period. And the content of nutrient in 0-10cm soil layer was significantly higher than that in 10-20cm soil layer, and it was higher in the shady slopes than that in the sunny slopes. Under artificial disturbance, variation mode of α diversity of plant community was mainly influenced by the vegetation restoration time and the contention of soil nitrate. The topsoil nutrient of embankment slope and the variation mode of α diversity of plant community reached to a higher level after 17 years of vegetation restoration. This stdudy is of important significance in improving the soil quality and the community diversity of embankment slope, and also has certain reference value on ecological construction as well as soil and water conservation of highways.
- References:
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Last Update:
1900-01-01