| Title | Long-term organic-inorganic fertilization ensures great soil productivity and bacterial diversity after natural-to-agricultural ecosystem conversion |
|---|---|
| Author | Weibing Xun1,2†, Zhihui Xu1†, Wei Li1, Yi Ren1, Ting Huang3, Wei Ran1, Boren Wang4, Qirong Shen1, and Ruifu Zhang1,2* |
| Address | 1Jiangsu Key Lab for Organic Waste Utilization, Nanjing Agricultural University, Nanjing 210095, P. R. China , 2Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China, 3Hanlin College, Nanjing University of Chinese Medicine, Taizhou 225300, P. R. China, 4Qiyang red soil experimental station, Chinese Academy of Agricultural Sciences, Qiyang 426182, P. R. China, |
| Bibliography | Journal of Microbiology, 54(9),611-617, 2016, |
| DOI | 10.1007/s12275-016-6143-3 |
| Key Words | natural ecosystem, agroecosystem, phylotype composition, bacteria diversity, productivity |
| Abstract | Natural ecosystems comprise the planet’s wild plant and animal resources, but large tracts of land have been converted to agroecosystems to support the demand for agricultural products. This conversion limits the number of plant species and decreases the soil biological diversity. Here we used highthroughput 16S rRNA gene sequencing to evaluate the responses of soil bacterial communities in long-term converted and fertilized red soils (a type of Ferralic Cambisol). We observed that soil bacterial diversity was strongly affected by different types of fertilization management. Oligotrophic bacterial taxa demonstrated large relative abundances in chemically fertilized soil, whereas copiotrophic bacterial taxa were found in large relative abundances in organically fertilized and fallow management soils. Only organic-inorganic fertilization exhibited the same local taxonomic and phylogenetic diversity as that of a natural ecosystem. However, the independent use of organic or inorganic fertilizer reduced local taxonomic and phylogenetic diversity and caused biotic homogenization. This study demonstrated that the homogenization of bacterial communities caused by natural-to-agricultural ecosystem conversion can be mitigated by employing rational organic-inorganic fertilization managemen |