芒萁侵入红壤退化裸地对土壤理化性质和细菌组成的影响

喻君保; 李启艳; 朱晨璐; 黄偲祺; 武欣怡; 杨帆; 侯晓龙

doi:10.13870/j.cnki.stbcxb.2023.01.025

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芒萁侵入红壤退化裸地对土壤理化性质和细菌组成的影响

更新时间：2025-03-12

- 芒萁侵入红壤退化裸地对土壤理化性质和细菌组成的影响
- Effects of
- 水土保持学报 2023年37卷第1期页码：188-196
- 作者机构：
  
  1. 福建农林大学林学院,福州,350002
  2. 南方红壤区水土保持国家林业和草原局重点实验室,福州,350002
  3. 海峡两岸红壤区水土保持协同创新中心,福州,350002
- 作者简介：
  
  [ "喻君保(1996-),男,在读硕士研究生,主要从事恢复生态与生态工程研究。E-mail:yujunbao76@163.com" ]
- 基金信息：
  
  国家自然科学基金项目(31901298);福建省自然科学基金项目(2022J01121);福建农林大学学科交叉融合专项基金项目(71202103D)
- DOI：10.13870/j.cnki.stbcxb.2023.01.025
  中图分类号： S154.3
- 纸质出版：2023
- 稿件说明：
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喻君保, 李启艳, 朱晨璐, 等. 芒萁侵入红壤退化裸地对土壤理化性质和细菌组成的影响[J]. 水土保持学报, 2023,37(1):188-196.

YU Junbao, LI Qiyan, ZHU Chenlu, et al. Effects of[J]. 2023, 37(1): 188-196.
喻君保, 李启艳, 朱晨璐, 等. 芒萁侵入红壤退化裸地对土壤理化性质和细菌组成的影响[J]. 水土保持学报, 2023,37(1):188-196. DOI： 10.13870/j.cnki.stbcxb.2023.01.025.

YU Junbao, LI Qiyan, ZHU Chenlu, et al. Effects of[J]. 2023, 37(1): 188-196. DOI： 10.13870/j.cnki.stbcxb.2023.01.025.

摘要

芒萁是最早侵入红壤退化裸地的先锋植物

其侵入过程对土壤环境的改变在退化裸地生态恢复进程中具有重要意义。以福建省长汀县红壤侵蚀裸地为研究对象

分析测定退化裸地中芒萁侵入区和非侵入区土壤理化性质和细菌组成及多样性。结果表明:芒萁侵入裸地显著提高土壤最大持水量、土壤含水率、全碳、全氮、全钾、有机质和pH

并显著降低土壤容重;芒萁侵入区增加根瘤菌目和慢生根瘤菌属等14种土壤优势细菌

变形菌门和甲型(α)变形杆菌的相对丰度显著提高(p<0.05)

而土壤绿弯菌门和AD3菌纲的相对丰度显著降低(p<0.05)

这些土壤细菌主要功能为化能异养、好氧化能异养和纤维素分解;芒萁侵入裸地显著提高土壤细菌群落结构多样性(p<0.05);芒萁侵入区和非侵入区土壤细菌群落结构差异显著(p<0.05);土壤细菌群落结构的主要影响因子是土壤含水率、全碳、有机质、土壤容重和pH。这些影响因子与疣微菌门、变形菌门、疣微菌纲和甲型(α)变形杆菌纲正相关。综上所述

芒萁侵入后可显著改善红壤侵蚀退化裸地的土壤理化性质

改善土壤细菌群落组成

增加土壤细菌群落多样性和优势菌群

对土壤细菌群落有积极效应。

Abstract

Dicranopteris dichotoma is the pioneer plant that invaded the degraded bare land of red soil

and its invasion process is of great significance to the change of soil environment in the process of ecological restoration of degraded land. Therefore

taking the eroded bare land of red soil in Changting County of Fujian Province as the research object

the soil physical and chemical properties

bacterial composition and diversity in the invasion and non- invasion areas of D. dichotoma were analyzed and determined. The results showed that the invasion of D. dichotoma significantly increased soil maximum water holding capacity

soil moisture

pH and the content of total carbon

total nitrogen

total potassium and organic matter

and significantly decreased soil bulk density (p<0.05). Compared with the non-invasion area

14 dominant soil bacteria such as Rhizobiale and Bradyrhizobium added in the invasion area of D. dichotoma

the relative abundance of Proteobacteria and Alphaproteobacteria significantly increased (p<0.05)

but the relative abundance of Chloroflexi and AD3 significantly decreased (p<0.05). The main functions of these soil bacteria were chemoheterotrophy

aerobic heterotrophy and cellulolysis. The invasion of D. dichotoma into bare land significantly increased the diversity of soil bacterial community structure (p<0.05). There were significant differences in soil bacterial community structure between invasion and non- invasion areas (p<0.05). The main influencing factors of soil bacterial community structure were soil moisture content

total carbon

organic matter

soil bulk density and pH. These influencing factors were positively correlated with Verrucomicrobia

Proteobacteria

Verrucomicrobiae and Alphaproteobacteria. In summary

D. dichotoma invasion could significantly improve soil physical and chemical properties

improve soil bacterial community composition

increase soil bacterial community diversity and dominant flora

and have a positive effect on soil bacterial community.

关键词

Keywords

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