土壤学
森林生态学
温带森林
丰度(生态学)
生态系统
环境科学
生态学
生物扩散
群落结构
微生物种群生物学
农林复合经营
生物
土壤水分
细菌
社会学
人口学
遗传学
人口
作者
Peng Zhang,Pingting Guan,Cao Hao,Jingjing Yang,Zhijing Xie,Donghui Wu
标识
DOI:10.1016/j.scitotenv.2021.151738
摘要
In response to human-induced changes in the environment, it is crucial to assess the underlying factors of the impacts of forest conversion on ecosystem function. However, research is limited on bacteria and fungi diversity, functional properties, and community assembly mechanisms in response to forest-to-cropland conversion. We categorized soil bacterial and fungal communities from primary forest, secondary forest, and cropland in Changbai Mountains, China. We found that forest-to-cropland conversion altered the structure and composition of bacterial and fungal communities and might be associated with potential changes in function. The null models indicated that the conversion from forest to cropland enhanced the bacterial dispersal limitation process and weakened the fungal dispersal limitation processes. Furthermore, ecological drift dominates the ecological processes of cropland fungi. Both edaphic properties (the content of C: N ratio, available phosphorus, nitrate) significantly impacted on soil bacterial and fungal community structures. In addition, there were significant functional variations in the fungal community between forest-to-cropland. The ectomycorrhizal and saprotrophic fungi showed increased abundance in the forest microbial communities, whereas the endophytic and pathogenic fungal abundance was increased in cropland soil. Taken together, our data illustrate the differences in the response of bacteria and fungi to forest-to-cropland conversion in temperate forest areas and deepen our understanding of the effects of forest conversion on microbial functions and community assembly processes.
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