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退化喀斯特植被恢复过程中土壤微生物生物量碳的变化

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年05期
Page:
71-75
Column:
研究论文
publishdate:
2008-09-30

Article Info:/Info

Title:
Changes of soil microbial biomass carbon along successional processes of degraded Karst vegetation
Article ID:
1000-2006(2008)05-0071-05
Author(s):
WEI Yuan12 ZHANG Jin-chi2 YU Li-fei1*
1. College of Forestry Guizhou University, Guiyang 550025, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
Keywords:
Degraded Karst vegetation Restoration processes Soil microbial Microbial biomass carbon
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2008.05.014
Document Code:
A
Abstract:
The mechanism of degraded Karst vegetation restoration was a popular research topic in soil science and ecology for the last decade. Soil microbial biomass C was recommended as one of major characteristics of soil quality in the processes of degraded Karst vegetation restoration. The test soil was taken from the Karst plateau Ecological Synthesis Control Area in Huajiang of Guizhou. The changes of soil microbial biomass C with different microhabitats, different soil layer and Rhizospheric, Non-rhizospherie were studied during the process of degraded karst vegetation restoration. The results showed that soil microbial biomass C had obvious difference. With degraded Karst vegetation restoration, the soil microbial biomass C were ascending obviously, i. e. arboreal community stage>shrubby community stage>herbaceous community stage>bare land stage. It indicated that the soil quality has been restored gradually. The microhabitat characteristic of soil microbial biomass C was ascending as stone gully>soil surface>stone-groove in the bare land stage and herbaceous community stage. The shrubby community stage and arboreal stage were stone-groove>soil surface>stone gully. The characteristic of vertical distribution in the soil profile decreased with the increase of the soil depth. It presented as A>B. The soil microbial biomass C in rhizosphere was greater than that in non-rhizosphere.

References

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Last Update: 2013-05-20