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干旱区地理 >

2022 , Vol. 45 >Issue 6: 1916 - 1926

DOI: https://doi.org/10.12118/j.issn.1000-6060.2022.055

生物与环境

干旱风沙区植被重建初期对土壤微生物群落结构的影响

  • 张力斌 ,
  • 何明珠 ,
  • 张克存 ,
  • 安志山 ,
  • 王金国 ,
  • 惠迎新 ,
  • 贾小龙
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  • 1.中国科学院西北生态环境资源研究院，甘肃 兰州 730000
    2.中国科学院大学，北京 100049
    3.宁夏交投工程建设管理有限公司，宁夏 银川 750000
    4.宁夏交通建设股份有限公司，宁夏 银川 750000
张力斌（1997-），男，硕士研究生，主要从事土壤生态等方面研究. E-mail: zhanglibin@nieer.ac.cn

收稿日期: 2022-02-16

  修回日期: 2022-04-24

  网络出版日期: 2023-02-01

基金资助

宁夏公路建设管理局项目(WMKY1);宁夏交通运输厅科研项目《沙漠腹地高速公路多元融合防护体系研究与应用》

收起

Effect of preliminary vegetation reconstruction on soil microorganism community structure in arid desert area

  • Libin ZHANG ,
  • Mingzhu HE ,
  • Kecun ZHANG ,
  • Zhishan AN ,
  • Jinguo WANG ,
  • Yingxin HUI ,
  • Xiaolong JIA
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  • 1. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Ningxia Transportation Investment Engineering Construction Management Co. Ltd, Yinchuan 750000, Ningxia, China
    4. Ningxia Communication Construction Co. Ltd, Yinchuan 750000, Ningxia, China

Received date: 2022-02-16

  Revised date: 2022-04-24

  Online published: 2023-02-01

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摘要

为揭示干旱风沙区植被重建对土壤微生物群落结构的影响，以乌海至玛沁高速公路腾格里沙漠段生态防护体系的植被重建区土壤为研究对象，以流动沙丘为对照，运用高通量测序技术研究植被重建区土壤微生物群落结构随植被恢复重建的变化特征。结果表明：植被重建区与流沙区土壤微生物群落组成相似，均以放线菌门（58.53%~67.85%）、变形细菌门（16.53%~19.68%）等为优势类群；优势菌属包括诺卡氏菌属、甲基柔膜菌属、微红微球菌属和微枝型杆菌属。与流沙区对照相比，植被重建区显著增加了土壤大部分菌门相对丰度和多样性。植被恢复重建后土壤pH、电导率及盐分含量降低；土壤微生物量磷（MBP）、土壤微生物量碳（MBC）与土壤微生物量碳氮比（MBC:MBN）在植被重建区浅层土壤（0~5 cm、 5~10 cm和10~20 cm）显著高于流沙区。因此，对于沙漠公路生态防护体系而言，植被重建能显著改善其浅层土壤养分状况、微生物相对丰度和多样性水平，是改善沙漠生态环境的重要措施。

关键词： 干旱风沙区; 植被重建; 微生物群落结构

本文引用格式

张力斌 , 何明珠 , 张克存 , 安志山 , 王金国 , 惠迎新 , 贾小龙 . 干旱风沙区植被重建初期对土壤微生物群落结构的影响[J]. 干旱区地理, 2022 , 45(6) : 1916 -1926 . DOI: 10.12118/j.issn.1000-6060.2022.055

Abstract

To elucidate the effect of revegetation on soil microbial community structure in an arid desert region, the revegetation area built to protect the Wuhai-Maqin Highway across the Tengger Desert, northwest China from dune blow was selected as the study area. High-throughput sequencing technology was applied to reveal the characteristics of soil microbial community structure under the revegetation, and selecting the moving dune as a comparison. Results found that microbial community composition was similar between the revegetated soil and moving dune, dominated by Actinobacteria (58.53%-67.85%) and Proteobacteria (16.53%-19.68%). Nocardia, Methylotenera, Rubellimicrobium, and Microvirga were the dominant genera in the revegetation area and moving dune. In contrast to the moving dune, the revegetation significantly increased the relative abundance and diversity of most phylum of microorganisms but significantly decreased soil pH, electrical conductivity, and salinity. Furthermore, compared with the moving dune, the revegetation significantly increased soil microbial biomass P and C:N at three soil layers, including 0-5 cm, 5-10 cm, and 10-20 cm. Overall, the revegetation could significantly improve the nutrient level and the relative abundance and diversity of soil microorganisms at the topsil layer of the desert ecological protection belt beside the highway.

Key words： arid windy sand area; vegetation reconstruction; microbial community structure

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