期刊
EURASIAN SOIL SCIENCE
卷 53, 期 8, 页码 1142-1153出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1064229320080141
关键词
soil microbial community; community-level physiological profiles; carbon-source utilization; functional diversity; Chaohu lakeside wetland
类别
资金
- National Natural Science Foundation of China (NSFC) [31770672, 31370626]
- Science and Technology Project of Jiangsu Construction System [2019ZD001139]
- Graduate Innovation Foundation of Anhui Agricultural University [2018yjs-18]
Under the circumstance of wetland degradation, we used Biolog EcoPlates(TM)method to investigate the impact of ecological restoration on the function of topsoil microbial communities by monitoring their metabolic diversity around Chaohu lakeside wetland. Four restoration patterns were selected, including reed shoaly land (RL), poplar plantation land (PL), abandoned shoaly grassland (GL) and cultivated flower land (FL). The result showed a rapid growth trend at the initial stage of incubation, following the fastest change rate at 72 h in both dormant and growing seasons. The Average Well Color development (AWCD) values of RL pattern was the highest at the detection points of each culture time, while the GL were the lowest. The calculation of diversity indicators also displayed significant lower McIntosh index in dormant season and Shannon-Wiener index in growing season in GL than in the others (P< 0.05). Carbohydrates and carboxylic acids were found to be the main substrates used in dormant season, whereas amino acids, polymers and phenolic acids were increasingly utilized by the microbial communities in growing season. We observed soil total potassium as the key factor that significantly affected the utilization efficiency of different carbon sources in both seasons (P< 0.05).
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