4.6 Article

Soil nutrient supply and tree species drive changes in soil microbial communities during the transformation of a multi-generation Eucalyptus plantation

期刊

APPLIED SOIL ECOLOGY
卷 166, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.apsoil.2021.103991

关键词

Soil chemical properties; Enzyme activity; Illumina MiSeq sequencing; Microbial communities; Tax4Fun; FUNGuild

资金

  1. Natural Science Foundation of Guangdong Province [2020A1515011404]
  2. Guangxi Major Science and Technology Project [AA172040879]
  3. China National Key Research and Development Program [2016YFD0600504, 2016YFD0600505]
  4. Operation Project for Guangdong Zhanjiang Eucalyptus Forest Ecosystem National Positioning Observation and Research Station [2020132008]

向作者/读者索取更多资源

The intensive management of Eucalyptus plantations has raised concerns about their impact on the environment and society, particularly regarding the transformation of monoculture plantation cutover areas. This study investigated how different transformation patterns of Eucalyptus plantations affected soil microbial communities and functions. The results showed that the transformation pattern of Eucalyptus x Manglietia glauca Blume mixed plantations significantly improved soil fertility compared to monoculture plantations.
Intensive management of Eucalyptus plantations has caused several social/environmental issues, including the concern over transformation of monoculture plantation cutover area. However, how different transformation patterns of Eucalyptus plantations affect soil microbial communities and their functions is unclear. In this study, the effects of different transformation patterns on structure and potential function of soil bacterial and fungal communities were evaluated. Soil chemical properties and acid phosphatase, urease, and catalase activities were also measured. In the third-generation monoculture Eucalyptus plantations, soil organic matter, nutrient contents, and microbial biomass decreased significantly and the relative abundance of oligotrophic bacteria (Chloroflexi) and symbiotic fungi (ectomycorrhizae) increased significantly compare with CK. However, in the Eucalyptus x Manglietia glauca Blume mixed plantation (E x M) and a Manglietia glauca Blume plantation (Manglietia), soil fertility (e.g., soil organic matter, total nitrogen, total phosphorus, and total potassium) improved, especially in E x M. In addition, soil acid phosphatase (0.30 mg center dot g- 1 center dot h- 1) and catalase (0.66 mg center dot g- 1 center dot h- 1) activities and the bacterial gene copies:fungal gene copies ratio (46.70) increased significantly in E x M compared with those in the monoculture plantations. The relative abundance of copiotrophic bacteria (Actinobacteria) and nitrogen cycle-associated bacteria (orders Rhizobiales and Frankiales) increased significantly in E x M. The abiotic factors soil available nitrogen and available zinc were the significant drivers of soil bacterial community structure, whereas the structure of fungal communities was most affected by tree species, in addition to soil pH and available copper. The results indicated that the E x M transformation pattern in the cutover area of Eucalyptus plantations had a significant beneficial effect on the soil fertility. The study also indicated that young plantations with Eucalyptus species have specific requirements for soil available phosphorus, available potassium, and available magnesium. Thus, increasing the supply of these nutrients during plantation development may have a positive effect on the sustainable management of plantations.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据