Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils
文献类型：SCI/SSCI论文
| 作者 | Dai X. Q.; Yuan, Y.; Wang, H. M. |
| 发表日期 | 2016 |
| 关键词 | Double cropping system Land use conversion Phospholipid fatty acid (PLFA) Red soil Soil properties Subtropical China land-use change fatty-acid analysis organic-carbon rice china fertilization cultivation diversity bacterial shifts |
| 英文摘要 | Soil microorganisms are the main drivers of all of the biochemical processes that occur in soils. Land-use conversion, a common occurrence driven by market economy, changes plant species and the associated management strategies, thus significantly influences soil microbial communities. However, few studies have been conducted to disentangle the effect of the alteration of plant species from that of soil environment during the initial years of conversion. In this study, the effect of land-use conversion from double rice cropping (RR) to maize-maize (MM) and soybean-peanut (SP) double cropping systems on soil physical and chemical properties and microbial communities was studied two years after the conversion in southern China. The results showed that land use conversion significantly changed the soil properties, microbial communities and microbial biomass. The soil water content decreased significantly by 263%, and the pH decreased by 0.50 and 0.52 for MM and SP, respectively, compared with RR. Soil inorganic N also decreased significantly by 55% after the conversion to drained fields. The total phospholipid fatty acids (PLFAs), and bacterial, G+, G- and actinomycetic PLFAs decreased significantly after the conversion. No significant differences were found in the soil properties, microbial communities and microbial biomass between the converted MM and SP. Our results indicated that the changes of anaerobic to aerobic conditions, rather than of crop type, induced the variations in the soil properties and microbial communities during the initial years after conversion from paddy soils to drained soils. In particular, soil pH was the key factor that regulated the variations in the soil microbial communities after conversion. (C) 2016 Elsevier B.V. All rights reserved. |
| 出处 | Catena |
| 卷 | 147 |
| 页 | 578-585 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0341-8162 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43424]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Dai X. Q.,Yuan, Y.,Wang, H. M.. Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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