Effects of Different Revegetation Patterns in Mountain Forests-the Arid Valley Ecotone in the Upper Reaches of Minjiang River on Rhizosphere Soil Microbial Biomass C, N and the Structure of Nitrogen-fixing Bacteria Community

ZHONG Xi-min; GONG Yuan-bo; CHEN Lin-wu; WU Wei-han; FANG Jian-jia; ZHANG Zhen-heng; CHEN Liang-shuang

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Effects of Different Revegetation Patterns in Mountain Forests-the Arid Valley Ecotone in the Upper Reaches of Minjiang River on Rhizosphere Soil Microbial Biomass C, N and the Structure of Nitrogen-fixing Bacteria Community

更新时间：2024-11-07

- Effects of Different Revegetation Patterns in Mountain Forests-the Arid Valley Ecotone in the Upper Reaches of Minjiang River on Rhizosphere Soil Microbial Biomass C, N and the Structure of Nitrogen-fixing Bacteria Community
- Vol. 25, Issue 1, (2011)
- 作者机构：
  
  四川农业大学,长江上游林业生态工程四川省重点实验室,四川,雅安,6250142. 四川省林业科学研究院,四川,成都,610081
- 作者简介：
- 基金信息：
- DOI：
  CLC： S154.3
- Published：2011
- 稿件说明：
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ZHONG Xi-min, GONG Yuan-bo, CHEN Lin-wu, et al. Effects of Different Revegetation Patterns in Mountain Forests-the Arid Valley Ecotone in the Upper Reaches of Minjiang River on Rhizosphere Soil Microbial Biomass C, N and the Structure of Nitrogen-fixing Bacteria Community[J]. 2011, 25(1).
DOI：

ZHONG Xi-min, GONG Yuan-bo, CHEN Lin-wu, et al. Effects of Different Revegetation Patterns in Mountain Forests-the Arid Valley Ecotone in the Upper Reaches of Minjiang River on Rhizosphere Soil Microbial Biomass C, N and the Structure of Nitrogen-fixing Bacteria Community[J]. 2011, 25(1). DOI：

摘要

以岷江上游山地森林/干旱河谷交错带5种植被恢复模式的根际与非根际土壤为研究对象

对土壤微生物生物量碳、氮和土壤固氮菌群落结构的影响进行了初步研究.结果表明

5种不同植被根际与非根际土壤的微生物生物量存在显著差异且根际土壤含量大于非根际土壤

依次为:青冈次生林＞灌木林＞刺槐林＞人工幼林＞针阔混交林;DGGE图谱显示

5种植被根际与非根际土壤固氮类群有一条明显的共有条带

其中刺槐林和灌木林的固氮菌多样性最高;多样性指数、群落丰富度分析表明

灌木根际土壤固氮菌的群落种群结构最丰富

其次为刺槐;聚类分析结果显示

不同植被恢复的l0种供试土壤样品分为4大类群.总之

自然恢复(青冈林和灌木林)效果好于人工林(刺槐林、人工幼林、针阔林);3种人工林相比较

刺槐林比其它两种人工林更有利于提高微生物生物量及土壤固氮菌群落结构多样性;在人工幼林地采取的封禁措施也有利于植被恢复.

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