[1]CHEN Sun-hua.Coupling Relationship between Plant Community Characteristics and Soil Physic-chemical Properties at Different Revegetation Stages on Sloping Lands with Purple Soil in Hengyang of Hu’nan Province, China[J].Research of Soil and Water Conservation,2014,21(05):7-12.
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Coupling Relationship between Plant Community Characteristics and Soil Physic-chemical Properties at Different Revegetation Stages on Sloping Lands with Purple Soil in Hengyang of Hu’nan Province, China
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 05
Page number:
7-12
Column:
Public date:
2014-10-28
- Title:
- Coupling Relationship between Plant Community Characteristics and Soil Physic-chemical Properties at Different Revegetation Stages on Sloping Lands with Purple Soil in Hengyang of Hu’nan Province, China
- Keywords:
- revegetation; biodiversity; soil physic-chemical factors; purple soil; Hengyang
- CLC:
- Q948.113;S153.6
- DOI:
- -
- Abstract:
- Based on the survey of community plots and laboratory analysis, we studied the biodiversity, soil physic-chemical properties and their coupling relationship at different revegetation stages by using the spacial series to replace time series. The results showed that: (1) biodiversity index had significant difference at different revegetation stages, Patrick richness index(R) and Shannon-Wiener index(H) significantly decreased in the sequence of succession middle anaphase stage(Ⅲ)→succession anaphase stage(Ⅳ)→succession middle prophase stage(Ⅱ)→succession initial stage(Ⅰ)(P < 0.05), Simpson index(D) significantly decreased in the sequence of Ⅰ→Ⅱ→Ⅳ→Ⅲ(P < 0.05), Pielou evenness index(E) significantly decreased in the order of Ⅳ→Ⅲ→Ⅱ→Ⅰ(P < 0.05); (2) in the 0—20 cm soil layers, SOC(Soil Organic Carbon), TN(Total Nitrogen) and AN(Available Nitrogen) significantly increased but SBD(Soil Bulk Density) significantly decreased with the revegetation succession(P < 0.05), SWC(Soil Water Content) was increasing with a little fluctuation. The changes in 20—40 cm soil layers followed the same rules of 0—20 cm soil layers, but the better degree was lower than that of 0—20 cm soil layers. The change of 40—60 cm soil layers was not followed with some rules, which showed there was no casual link with the succession of revegetation; (3) there were certain correlations between biodiversity index and soil physic-chemical factors, among which SOC and TN were significantly positive correlated with biodiversity index. The effects of biodiversity on the soil physic-chemical properties were weakening with the increase of soil depth.
- References:
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1900-01-01