Hydrologic pulsing affects denitrification rates and denitrifier communities in a revegetated riparian ecotone
文献类型：期刊论文
| 作者 | Ye, C; Cheng, XL; Zhang, KR; Du, M; Zhang, QF |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2017 |
| 卷号 | 115页码:137-147 |
| 英文摘要 | Hydrologic pulsing and revegetation strongly affect both denitrification rate and denitrifier communities in riparian zones, yet how they drive the shifts in the denitrifying bacterial community and consequently alter denitrification remains unclear. In this study, we investigated denitrification rate and denitrifier community structure and their abundance in different hydrological pulsing phases and vegetation types (tree, shrub, and herb) in the water-level-fluctuate-zone of the Three Gorges Reservoir, China. Results revealed that hydrologic pulsing greatly affected denitrification rate possibly by regulating the soil NO3-N concentration, with higher denitrification rate in the reflooding phase in tree soils than that in the saturated and drying phases. Hydrologic pulsing also significantly regulated the abundance and structure of denitrifier communities in herb soils by altering soil temperature, moisture, and NH4+-N. As expected, vegetation types affected the denitrifier communities by altering soil texture, pH, temperature, moisture, soil organic C, and C:N ratio, with higher abundance of nirS genes and higher diversity of nirS and nirK genes in herb soils. However, there was no significant relationship between denitrification rate and denitrifier communities, indicating that hydrologic pulsing regulated denitrification rate primarily by changing soil environmental factors rather than community composition or abundance of denitrifiers. Our results suggest that tree and herb plantations would potentially improve water quality in the riparian zone and adjacent rivers by increasing denitrification rate and abundance of denitrifiers, respectively. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000414880000016 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1278]  |
| 专题 | 中国科学院武汉植物园 |
| 推荐引用方式 GB/T 7714 | Ye, C,Cheng, XL,Zhang, KR,et al. Hydrologic pulsing affects denitrification rates and denitrifier communities in a revegetated riparian ecotone[J]. SOIL BIOLOGY & BIOCHEMISTRY,2017,115:137-147. |
| APA | Ye, C,Cheng, XL,Zhang, KR,Du, M,&Zhang, QF.(2017).Hydrologic pulsing affects denitrification rates and denitrifier communities in a revegetated riparian ecotone.SOIL BIOLOGY & BIOCHEMISTRY,115,137-147. |
| MLA | Ye, C,et al."Hydrologic pulsing affects denitrification rates and denitrifier communities in a revegetated riparian ecotone".SOIL BIOLOGY & BIOCHEMISTRY 115(2017):137-147. |
入库方式： OAI收割
来源：武汉植物园
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