Edaphic Conditions Regulate Denitrification Directly and Indirectly by Altering Denitrifier Abundance in Wetlands along the Han River, China
文献类型：期刊论文
| 作者 | Xiong, ZQ; Guo, LD; Zhang, QF; Liu, GH; Liu, WZ |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2017 |
| 卷号 | 51期号:10页码:5483-5491 |
| 英文摘要 | Riparian wetlands play a critical role in retaining nitrogen (N) from upland runoff and improving river water quality, mainly through biological processes such as soil denitrification. However, the relative contribution of abiotic and biotic factors to riparian denitrification capacity remains elusive. Here we report the,spatioternporal dynamics of potential and unamended soil denitrification rates in 20 wetlands along the Han River, an important water source in central China. We also quantified the abundance Of soil denitrifying microorganisms using nirK and nirS genes. Results showed that soil denitrification rates were significantly different between riparian and reservoir Shoreline wetlands, but not between mountain and lowland wetlands. In addition, soil denitrification rates showed strong seasonality, with higher values in August (summer) and April (spring) but lower values in January (winter). The potential and unamended denitrification rates were positively correlated with edaphic conditions (moisture and carbon concentration), denitrifier abundance, and plant species richness. Path analysis further revealed that edaphic conditions could regulate denitrification rates both directly and indirectly through their effects on denitrifier abundance. Our findings highlight that not only environmental factors, but also biotic factors including denitrifying microorganisms and standing vegetation, play an important role in regulating denitrification rate and N removal capacity in riparian wetlands. |
| WOS记录号 | WOS:000401674400016 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1368]  |
| 专题 | 中国科学院武汉植物园 |
| 推荐引用方式 GB/T 7714 | Xiong, ZQ,Guo, LD,Zhang, QF,et al. Edaphic Conditions Regulate Denitrification Directly and Indirectly by Altering Denitrifier Abundance in Wetlands along the Han River, China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(10):5483-5491. |
| APA | Xiong, ZQ,Guo, LD,Zhang, QF,Liu, GH,&Liu, WZ.(2017).Edaphic Conditions Regulate Denitrification Directly and Indirectly by Altering Denitrifier Abundance in Wetlands along the Han River, China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(10),5483-5491. |
| MLA | Xiong, ZQ,et al."Edaphic Conditions Regulate Denitrification Directly and Indirectly by Altering Denitrifier Abundance in Wetlands along the Han River, China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.10(2017):5483-5491. |
入库方式： OAI收割
来源：武汉植物园
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