Contrasting response of two grassland soils to N addition and moisture levels: N2O emission and functional gene abundance
文献类型：期刊论文
| 作者 | Long, Xi-En; Shen, Ju-Pei; Wang, Jun-Tao; Zhang, Li-Mei; Di, Hongjie; He, Ji-Zheng |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 17期号:2页码:384-392 |
| 关键词 | Denitrification Grassland N2o Emission n Addition Nitrification Soil Moisture |
| 英文摘要 | Nitrification and denitrification processes dominate nitrous oxide (N2O) emission in grassland ecosystems, but their relative contribution as well as the abiotic factors are still not well understood. Two grassland soils from Duolun in Inner Mongolia, China, and Canterbury in New Zealand were used to quantitatively compare N2O production and the abundance of bacterial and archaeal amoA, denitrifying nirK and nirS genes in response to N additions (0 and 100 mu g NH4 (+)-N g(-1) dry soil) and two soil moisture levels (40 and 80 % water holding capacity) using microcosms. Soil moisture rather than N availability significantly increased the nitrification rate in the Duolun soil but not in the Canterbury soil. Moreover, N addition promoted denitrification enzyme activities in the Canterbury soil but not in the Duolun soil. The abundance of bacterial and archaeal amoA genes significantly increased as soil moisture increased in the Duolun soil, whereas in the Canterbury soil, only the abundance of bacterial amoA gene increased. The increase in N2O flux induced by N addition was significantly greater in the Duolun soil than in the Canterbury soil, suggesting that nitrification may have a dominant role in N2O emission for the Duolun soil, while denitrification for the Canterbury soil. Microbial processes controlling N2O emission differed in grassland soils, thus providing important baseline data in terms of global change. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/38980]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Long, Xi-En,Shen, Ju-Pei,Wang, Jun-Tao,et al. Contrasting response of two grassland soils to N addition and moisture levels: N2O emission and functional gene abundance[J]. JOURNAL OF SOILS AND SEDIMENTS,2017,17(2):384-392. |
| APA | Long, Xi-En,Shen, Ju-Pei,Wang, Jun-Tao,Zhang, Li-Mei,Di, Hongjie,&He, Ji-Zheng.(2017).Contrasting response of two grassland soils to N addition and moisture levels: N2O emission and functional gene abundance.JOURNAL OF SOILS AND SEDIMENTS,17(2),384-392. |
| MLA | Long, Xi-En,et al."Contrasting response of two grassland soils to N addition and moisture levels: N2O emission and functional gene abundance".JOURNAL OF SOILS AND SEDIMENTS 17.2(2017):384-392. |
入库方式： OAI收割
来源：生态环境研究中心
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