Variations of Soil Microbial Biomass Carbon and Biological Information Entropy During Revegetation on Hillslope Land with Purple Soil

YANG Ning; ZOU Dong-sheng; YANG Man-yuan; LEI Yu-lan; LIN Zhong-gui; FU Mei-yun; SONG Guang-tao

doi:10.13961/j.cnki.stbctb.2014.05.015

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Variations of Soil Microbial Biomass Carbon and Biological Information Entropy During Revegetation on Hillslope Land with Purple Soil

- Variations of Soil Microbial Biomass Carbon and Biological Information Entropy During Revegetation on Hillslope Land with Purple Soil
- Bulletin of Soiland Water Conservation Vol. 33, Issue 5, Pages: 39-43(2014)
- 作者机构：
  
  1. 湖南环境生物职业技术学院园林学院,湖南,衡阳,421005
  2. 湖南农业大学生物科学技术学院,湖南,长沙,410128
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.05.015
  CLC：
- Published：2014
- 稿件说明：
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YANG Ning, ZOU Dong-sheng, YANG Man-yuan, et al. Variations of Soil Microbial Biomass Carbon and Biological Information Entropy During Revegetation on Hillslope Land with Purple Soil[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 39-43.
DOI：

YANG Ning, ZOU Dong-sheng, YANG Man-yuan, et al. Variations of Soil Microbial Biomass Carbon and Biological Information Entropy During Revegetation on Hillslope Land with Purple Soil[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 39-43. DOI： 10.13961/j.cnki.stbctb.2014.05.015.

摘要

采用空间序列代替时间序列的方法

对河南省衡阳市紫色土丘陵坡地植被恢复过程中的土壤微生物生物量碳(SMBC)、微生物熵(q

SMBC

)的变化特征进行了研究。结果表明:(1)随着植被恢复的进行

SMBC和q

SMBC

均显著增加;(2)随着土层深度的增加

SMBC显著减小

而q

SMBC

显著增加;(3)草本群落阶段(Ⅱ)→灌木群落阶段(Ⅲ)→乔木群落阶段(Ⅳ)

根际和非根际的SMBC显著增加

表现出根际>非根际的特点

阶段Ⅱ的根际与非根际SMBC比值明显高于Ⅲ与Ⅳ。根际和非根际的q

SMBC

均显著增加

表现出根际

非根际的特点

根际和非根际的q

SMBC

比值差异不显著;(4)相关分析表明

SMBC与q

SMBC

均与土壤有机碳、阳离子交换量呈极显著或显著正相关关系

与土壤容重呈显著负相关关系。

Abstract

The properties of SMBC(soil microbial biomass carbon)

qSMBC(biological information entropy) during revegetation on hillslope land with purple soils in Hengyang City of Hunan Province were studied using the space for time method. The results showed that:(1) SMBC and qSMBC significantly increased from bare land(Ⅰ)

herbaceous community(Ⅱ)

shrubby community(Ⅲ) to arboreal community stage(Ⅳ);(2) SMBC significantly decreased but qSMBC significantly increased from soil layer of 0-20 cm

20-40 cm to 40-60 cm;(3) From stage Ⅱ

Ⅲ to Ⅳ

SMBC in R(rhizosphere) and S(non-rhizosphere) were significantly increased

and expressed the properties SMBCR>SMBCS

SMBCR/SMBCS in stage Ⅱ was obviously higher than that in Ⅲ and Ⅳ. qSMBCR and qSMBCS significantly increased from stage Ⅱ to Ⅳ

and qSMBCR<qSMBCS

but qSMBCR/qSMBCS had no significant difference;(4) Correlation analysis showed:SMBC and qSMBC highly or significantly positively correlated with soil organic carbon and cation exchange capacity(CEC)

and significantly negatively correlated with bulk density.

关键词

Keywords

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