Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China
文献类型：SCI/SSCI论文
| 作者 | Liu X. R.; Ren, J. Q.; Li, S. G.; Zhang, Q. W. |
| 发表日期 | 2015 |
| 关键词 | qinghai-tibetan plateau acid forest soils n-mineralization immobilization turnover microbial biomass temperate steppe conifer forest northern china nitrification carbon |
| 英文摘要 | Effects of simulated nitrogen (N) deposition on soil net nitrogen mineralization (NNM) were examined in situ during two growing seasons, using the resin-core technique in the semiarid meadow steppe in Inner Mongolia, China. The aim of this study is to clarify the effect of N levels (0, 10, and 20 kg N ha(-1)yr(-1)) and forms (NH4+ and NO3-) on soil mineral N and NNM. Our results showed that N levels had no significant differences on soil mineral N and NNM. In the first year, three N treatments ((NH4)(2)SO4, NH4Cl and KNO3) increased soil NH4+ concentrations but had no significant effects on soil NO3- concentrations. In the second year, (NH4)(2)SO4 treatment increased soil NO3- concentrations, NH4Cl and KNO3 treatments decreased them. Three N treatments significantly decreased soil NH4+ concentrations in the later stages of the second year. As for the soil NNM, three N treatments had no significant effects on the rates of soil NNM (R-m) and net nitrification (R-n) in the first year, but significantly decreased them in the second year. The contribution of N addition to Rm was higher from (NH4)(2)SO4 than from NH4Cl and KNO3. However, Soil Rm was mainly affected by soil water content (SWC), accumulated temperature (T-a), and soil total N (TN). These results suggest that the short-term atmospheric N deposition may inhibit soil NNM in the meadow steppe of Inner Mongolia. |
| 出处 | Plos One |
| 卷 | 10 |
| 期 | 7 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1932-6203 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38744]  |
| 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 | Liu X. R.,Ren, J. Q.,Li, S. G.,et al. Effects of Simulated Nitrogen Deposition on Soil Net Nitrogen Mineralization in the Meadow Steppe of Inner Mongolia, China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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