Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China
文献类型：期刊论文
| 作者 | Xing, X.1; Wang, C.1,5; Butterbach-Bahl, K.2,5; He, N.3; Wang, Q.1; Han, X.1,4 |
| 刊名 | EUROPEAN JOURNAL OF SOIL SCIENCE
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 66期号:3页码:485-495 |
| ISSN号 | 1351-0754 |
| DOI | 10.1111/ejss.12231 |
| 英文摘要 | Microbial nitrogen (N) transformations play a key role in regulating N cycling in grassland ecosystems. However, there is still little information on how management of semi-arid grassland such as mowing and/or N fertilizer application affects microbial activity and N transformations. In a field experiment in northern China, N was added at a rate of 10 g N m(-2) year(-1) as NH4NO3 to mown and unmown plots (4 x 4 m(2)) and in situ rates of net ammonification (R-amm), nitrification (R-nit) and mineralization (R-min) were followed at monthly intervals for the vegetation growth periods in the years 2006-2009. In addition, we also measured soil microbial biomass carbon (MBC) and nitrogen (MBN), microbial respiration (MR) and peak above-ground biomass in August of each measurement year. Driven by the pronounced inter-annual variability of rainfall, all the properties investigated varied markedly across years. Nevertheless, we were able to demonstrate that over the 4 years N addition significantly stimulated R-nit, R-min and MBN, on average, by 288, 149 and 11.6%, respectively. However, N addition decreased MBC significantly as well as the ratio of MBC:MBN by, on average, 10 and 23%, respectively, whereas an effect of N addition on MR could not be demonstrated. Mowing decreased MBN, MR and qCO(2) significantly by 9, 28 and 24%, respectively, but no effects were found on microbial net N transformation rates and MBC. N addition and mowing interactively affected R-amm and R-min, and MBN, MBC:MBN. In summary, our results indicate a positive effect of N addition but a negative effect of mowing on microbial N transformation in this C4 grassland in northern China. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000355004000010 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://210.72.129.5/handle/321005/122037]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Han, X. |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Int Livestock Res Inst, Nairobi 30709, Kenya 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Net Work Observat & Modeling, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 5.Inst Meteorol & Climate Res, Atmospher Environm Res, D-82467 Garmisch Partenkirchen, Germany |
| 推荐引用方式 GB/T 7714 | Xing, X.,Wang, C.,Butterbach-Bahl, K.,et al. Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2015,66(3):485-495. |
| APA | Xing, X.,Wang, C.,Butterbach-Bahl, K.,He, N.,Wang, Q.,&Han, X..(2015).Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China.EUROPEAN JOURNAL OF SOIL SCIENCE,66(3),485-495. |
| MLA | Xing, X.,et al."Nitrogen addition and mowing affect microbial nitrogen transformations in a C4 grassland in northern China".EUROPEAN JOURNAL OF SOIL SCIENCE 66.3(2015):485-495. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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