Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau

WEI Yuan; ZHANG Jin-chi; YU Yuan-chun; YU Li-fei

Volume 26 Issue 6

Dec. 2009

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WEI Yuan, ZHANG Jin-chi, YU Yuan-chun, YU Li-fei. Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau[J]. Journal of Zhejiang A&F University, 2009, 26(6): 842-848.

Citation:

WEI Yuan, ZHANG Jin-chi, YU Yuan-chun, YU Li-fei. Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau[J]. Journal of Zhejiang A&F University, 2009, 26(6): 842-848.

Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau

1.
School of Resources and Environmental Management，Guizhou College of Finance and Economics，Guiyang 550004，Guizhou，China;
2.
College of Forestry，Guizhou University，Guiyang 550025，Guizhou，China;
3.
College of Forest Resources and Environment，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

More Information

Corresponding author: YU Li-fei
Publish Date: 2009-12-20

Abstract

In order to study the biological characteristics of soil quality during degraded karst vegetation restoration，soil samples were collected from different restoration stages（bare land stage，herbaceous community stage，shrubby community stage and the arboreal community stage）in the Karst Plateau Ecological Synthesis Control Area in Huajiang of Guizhou. By using microbial incubation methods（with methods of dilution plate smearing and statistical analysis），the distributions of soil microbial amount in different soil layers as well as the rhizosphere and non-rhizosphere areas，and for different seasons，were studied. The results showed that with restoration of degraded karst vegetation，there was a highly significant increase（P＜0.01） in microbial amount（bacteria，fungi，actinomyces，and total microbes）with the arboreal community stage＞shrubby community stage＞herbaceous community stage＞bare land stage. Soil microbial amount significantly decreased（P＜0.05） in the soil profile with an increase of soil depth with layer A＞ layer B. Also，for seasonal change，soil microbial amount（in CFU·g-1）was highest in summer （6.16 × 106 for bacteria，1.11 × 105 for fungi，3.16 × 105 for actinomyces，and 6.59 × 106 for total microbial amount） and lowest in winter（3.42 × 106 for bacteria，0.45 × 105 for fungi，1.75 × 105 for actinomyces，and 3.64 × 106 for total microbial amount）. Overall，the seasons were summer＞autumn＞spring＞winter，and statistical analysis showed significant differences（P＜0.05）. Additionally，microbial amount in the rhizosphere was significantly greater（P＜0.05） than the non-rhizosphere. Thus，soil microbial amount increased during vegetation restoration of degraded karst lands，which indicated soil quality gradually improved.［Ch，2 fig. 2 tab. 21 ref.］
- soil science,
- degraded karst,
- vegetation restoration,
- soil-microorganisms,
- Guizhou Huajiang

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau

1. School of Resources and Environmental Management，Guizhou College of Finance and Economics，Guiyang 550004，Guizhou，China;

2. College of Forestry，Guizhou University，Guiyang 550025，Guizhou，China;

3. College of Forest Resources and Environment，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: YU Li-fei

Publish Date: 2009-12-20

Key words:

Abstract: In order to study the biological characteristics of soil quality during degraded karst vegetation restoration，soil samples were collected from different restoration stages（bare land stage，herbaceous community stage，shrubby community stage and the arboreal community stage）in the Karst Plateau Ecological Synthesis Control Area in Huajiang of Guizhou. By using microbial incubation methods（with methods of dilution plate smearing and statistical analysis），the distributions of soil microbial amount in different soil layers as well as the rhizosphere and non-rhizosphere areas，and for different seasons，were studied. The results showed that with restoration of degraded karst vegetation，there was a highly significant increase（P＜0.01） in microbial amount（bacteria，fungi，actinomyces，and total microbes）with the arboreal community stage＞shrubby community stage＞herbaceous community stage＞bare land stage. Soil microbial amount significantly decreased（P＜0.05） in the soil profile with an increase of soil depth with layer A＞ layer B. Also，for seasonal change，soil microbial amount（in CFU·g-1）was highest in summer （6.16 × 106 for bacteria，1.11 × 105 for fungi，3.16 × 105 for actinomyces，and 6.59 × 106 for total microbial amount） and lowest in winter（3.42 × 106 for bacteria，0.45 × 105 for fungi，1.75 × 105 for actinomyces，and 3.64 × 106 for total microbial amount）. Overall，the seasons were summer＞autumn＞spring＞winter，and statistical analysis showed significant differences（P＜0.05）. Additionally，microbial amount in the rhizosphere was significantly greater（P＜0.05） than the non-rhizosphere. Thus，soil microbial amount increased during vegetation restoration of degraded karst lands，which indicated soil quality gradually improved.［Ch，2 fig. 2 tab. 21 ref.］

Ecological characteristics of soil microbial amount during succession of degraded karst vegetation on the Guizhou Plateau

Abstract

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通讯作者: 陈斌, bchen63@163.com

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