期刊
ESTUARINE COASTAL AND SHELF SCIENCE
卷 245, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2020.106982
关键词
Coastal wetland; Invasive plant ecology; Metabolic functional diversity; Spartina alterniflora Loisel; Seasonal dynamics
资金
- Public Service Platform Project for Jiangsu Ocean High-end Equipment Testing
- National Undergraduate Training Program for Innovation and Entrepreneurship [201910304019Z]
The invasion of Spartina alterniflora Loisel, a perennial herb that was introduced into China in 1979, has become an important environmental problem in coastal zones of Jiangsu Province. Although microorganisms play an important role in the structure of ecosystems, the effect of S. alterniflora on soil microbial metabolic diversity remains unexplored. In this work, the variations produced by S. alterniflora in the seasonal dynamics of soil microbial metabolism were examined and compared with the soil microbial metabolism of bare flat. The obtained results indicated that S. alterniflora increases soil total carbon content during the whole year, and decreases soil salinity in spring, summer and winter. The presence of S. alterniflora enhanced the metabolic activity of soil microbes in summer. In autumn, Shannon (H') and Pielou (J) indices were significantly decreased in S. alterniflora-invaded soil. S. alterniflora altered microbial carbohydrate, amino acid, carboxylic acid, and phenolic acid metabolism in a season-dependent manner, and enhanced microbial amine metabolism during the four seasons. Redundancy analysis demonstrated that soil pH and salinity are driving the metabolic functional diversity in coastal wetlands. Taken together, these results confirmed that the invasion of S. alterniflora is modifying soil physicochemical properties and, subsequently, altering soil microbial metabolic diversity.
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。
推荐
暂无数据