时序
营养物
环境科学
生态系统
营养循环
土壤水分
恢复生态学
农学
土壤生物多样性
生物
生态学
土壤肥力
土壤科学
作者
Rui Guo,Yiyue Chen,Mingtao Xiang,Song Yang,Feifei Wang,Wenzhi Cao,Yang Hui,Shaoyun Peng
标识
DOI:10.1016/j.apsoil.2023.105247
摘要
The restoration of plants is effective for restoring ecosystems in eroded areas. Soil bacterial communities play an important role in nutrient cycling. High-throughput sequencing technology was used to determine the changes in soil bacteria in different restored plant communities and years of restoration. The FAPROTAX database and random forest model were also used to analyze the changes in soil bacterial carbon (C), nitrogen (N), and phosphorus (P) metabolic functions and their influencing factors. The results showed that the bacterial community diversity, soil texture, physicochemical properties, and multifunctionality improved substantially with the increments and years of restoration. These changes, in turn, altered the nutrient metabolic functions in soils by increasing the fixation of bacterial C, decreasing the fixation of N, and gradually relieving the limitations on N. However, these changes also increased the limitation of P during the late stage of restoration. The pH values and soil nutrients were crucial and exerted a large influence on the nutrients and metabolic functions of the bacteria. These findings facilitate the restoration of plants in subtropical areas of eroded soil.
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