Heterotrophic nitrification is the predominant NO3- production mechanism in coniferous but not broad-leaf acid forest soil in subtropical China
文献类型：期刊论文
| 作者 | Zhang, Jinbo1; Mueller, Christoph2; Zhu, Tongbin1; Cheng, Yi1; Cai, Zucong1 |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 47期号:5页码:533-542 |
| 关键词 | N-15 tracing technique Model Labile and recalcitrant organic N Gross N transformation Heterotrophic nitrification |
| ISSN号 | 0178-2762 |
| DOI | 10.1007/s00374-011-0567-z |
| 通讯作者 | Cai, Zucong(zccai@mail.issas.ac.cn) |
| 英文摘要 | A study was carried out to investigate the potential gross nitrogen (N) transformations in natural secondary coniferous and evergreen broad-leaf forest soils in subtropical China. The simultaneously occurring gross N transformations in soil were quantified by a N-15 tracing study. The results showed that N dynamics were dominated by NH4+ turnover in both soils. The total mineralization (from labile and recalcitrant organic N) in the broad-leaf forest was more than twice the rate in the coniferous forest soil. The total rate of mineral N production (NH4+ + NO3-) from the large recalcitrant organic N pool was similar in the two forest soils. However, appreciable NO3- production was only observed in the coniferous forest soil due to heterotrophic nitrification (i.e. direct oxidation of organic N to NO3-), whereas nitrification in broad-leaf forest was little (or negligible). Thus, a distinct shift occurred from predominantly NH4+ production in the broad-leaf forest soil to a balanced production of NH4+ and NO3- in the coniferous forest soil. This may be a mechanism to ensure an adequate supply of available mineral N in the coniferous forest soil and most likely reflects differences in microbial community patterns (possibly saprophytic, fungal, activities in coniferous soils). We show for the first time that the high nitrification rate in these soils may be of heterotrophic rather than autotrophic nature. Furthermore, high NO3- production was only apparent in the coniferous but not in broad-leaf forest soil. This highlights the association of vegetation type with the size and the activity of the SOM pools that ultimately determines whether only NH4+ or also a high NO3- turnover is present. |
| 收录类别 | SCI |
| WOS关键词 | ANALYZE N TRANSFORMATIONS ; GROSS NITROGEN TRANSFORMATIONS ; CHILEAN NOTHOFAGUS FOREST ; OLD GRASSLAND SOIL ; N-15 TRACING MODEL ; RETENTION PROCESSES ; PLANTATION FORESTS ; AMMONIA OXIDATION ; TROPICAL FOREST ; POOL DILUTION |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000292972400006 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558893 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Cai, Zucong |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Univ Giessen, Dept Plant Ecol, D-35392 Giessen, Germany |
| 推荐引用方式 GB/T 7714 | Zhang, Jinbo,Mueller, Christoph,Zhu, Tongbin,et al. Heterotrophic nitrification is the predominant NO3- production mechanism in coniferous but not broad-leaf acid forest soil in subtropical China[J]. BIOLOGY AND FERTILITY OF SOILS,2011,47(5):533-542. |
| APA | Zhang, Jinbo,Mueller, Christoph,Zhu, Tongbin,Cheng, Yi,&Cai, Zucong.(2011).Heterotrophic nitrification is the predominant NO3- production mechanism in coniferous but not broad-leaf acid forest soil in subtropical China.BIOLOGY AND FERTILITY OF SOILS,47(5),533-542. |
| MLA | Zhang, Jinbo,et al."Heterotrophic nitrification is the predominant NO3- production mechanism in coniferous but not broad-leaf acid forest soil in subtropical China".BIOLOGY AND FERTILITY OF SOILS 47.5(2011):533-542. |
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来源：南京土壤研究所
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