Journal article
Edaphic variables influence soil bacterial structure under successive fertilization of Paulownia plantation substituting native vegetation
Journal of Soils and Sediments, Vol.21(8), pp.2922-2937
01/08/2021
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Abstract
Purpose Paulownia is the fastest-growing timber species all over the world which depended on exogenous nutrient input and scattered in the subtropical region of China. Practical experience proved that balanced fertilization can provide a rational nutrition supply for Paulownia cultivation by affecting soil microorganisms. However, there have been no rigorous studies on the effects of fertilization and edaphic variables on soil community structure and functions of Paulownia plantation in the subtropical region.
Materials and methods We conducted a field plot experiment with four fertilization length levels of Paulownia plantation (abbreviated as 1-, 3-, 10-, and 13-yr) and a nearby native evergreen broadleaf forest (abbreviated as reference forest) to study the effects of the different fertilization lengths between them on soil bacterial community and the relationship with edaphic variables based on high-throughput sequencing and redundancy analysis.
Results The results showed soil organic carbon, macronutrients, and boron in plantation were significantly higher than that in the reference forest, while fertilization treatments significantly increased Shannon and Heip indexes by up to 14.37 and 75%, respectively. Chloroflexi and Nitrospiare relative abundance in the Paulownia plantation was significantly lower than in the reference forest, which implied that fertilization treatment significantly promote nitrogen transformation processes, whereas Firmicutes showed the opposite trend. Soil organic carbon, nitrate-nitrogen, total potassium, and available boron are the key factors affecting bacterial communities as confirmed by Spearman’s correlation analysis and redundancy analysis.
Conclusions Our study stressed that fertilization duration is the main driving force for the improvement of bacterial community diversity and nitrogen cycling function, and major achieved by affecting edaphic variables.
Details
- Title
- Edaphic variables influence soil bacterial structure under successive fertilization of Paulownia plantation substituting native vegetation
- Creators
- Sen Liu - Cent South Univ Forestry & Technol, Coll Forestry, Key Lab Soil & Water Conservat & Desertificat Com, Changsha 410004, Hunan, Peoples R ChinaPeng Li - Guangxi Zhuang Autonomous Reg Forestry Res Inst, Yongwu Rd 23, Nanning 530002, Guangxi, Peoples R ChinaLukas Van Zwieten - NSW Department of Primary IndustriesJia Tu - Central South University of Forestry and TechnologyWeixiang Gan - Cent South Univ Forestry & Technol, Coll Forestry, Key Lab Soil & Water Conservat & Desertificat Com, Changsha 410004, Hunan, Peoples R ChinaSheng Lu - Cent South Univ Forestry & Technol, Coll Forestry, Key Lab Soil & Water Conservat & Desertificat Com, Changsha 410004, Hunan, Peoples R ChinaHailong Wang - Foshan UniversityLichao Wu - Cent South Univ Forestry & Technol, Coll Forestry, Key Lab Soil & Water Conservat & Desertificat Com, Changsha 410004, Hunan, Peoples R China
- Publication Details
- Journal of Soils and Sediments, Vol.21(8), pp.2922-2937
- Publisher
- Springer
- Number of pages
- 16
- Grant note
- 2015BAD09B0204 / National Science and Technology Support Project of China CX202101001 / Postgraduate Science and Technology Innovation Fund Project of Central South University of Forestry and Technology
- Identifiers
- 991013054662102368
- Copyright
- © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article