Nitrogen addition reduces dissolved organic carbon leaching in a montane forest
文献类型：期刊论文
| 作者 | Chang, Ruiying1; Li, Na2; Sun, Xiangyang1; Hu, Zhaoyong1; Bai, Xuesong1; Wang, Genxu1 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2018-12 |
| 卷号 | 127期号:2018页码:31-38 |
| ISSN号 | 0038-0717 |
| 关键词 | Anthropogenic nitrogen deposition Zero-tension lysimeters Seasonal pattern DOC production DOC retention Extracellular enzyme activity |
| DOI | 10.1016/j.soilbio.2018.09.006 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Dissolved organic carbon (DOC) plays a significant role in the forest soil carbon cycle and can be regulated by nitrogen (N) addition. However, the regulatory direction, mechanism and seasonal pattern of DOC under N addition are less clear. Here, in a montane evergreen forest located at the eastern edge of the Tibetan Plateau, 2 levels of N were applied over 2 years to determine the effects of N addition on DOC release from organic (O layer) and mineral soil. Frequent sampling revealed that high levels of N addition could decrease the concentration of DOC and the flux from the O layer but not from mineral soil and that moderate N addition had no effect on DOC leaching from either the O or mineral layer. The effect of N addition on DOC leaching from the O layer was seasonally dependent, showing a significant reduction in DOC leaching during autumn/winter but no changes during summer and spring. This seasonally different response of DOC to N addition affected the seasonal pattern of DOC leaching. Soil and leachate pH were not influenced by N addition in the short term, indicating that there was not enough difference in DOC retention by mineral soil to significantly affect DOC leaching under N addition. In contrast, N addition-derived reduction in DOC leaching was likely to be due to suppressed fresh litterfall-derived DOC production during autumn/winter; this speculation was supported by lower values of O layer water-extractable organic carbon and microbial biomass carbon as well as lower saccharase and cellulose activities found with high N addition. These results suggested that the processes in control of DOC leaching and their responses to N addition were different for O and mineral soil and that short-term N addition could decrease O-layer DOC leaching, which is likely associated with decreased DOC production rather than greater DOC retention. |
| 学科主题 | Environment ; Ecology |
| URL标识 | 查看原文 |
| WOS关键词 | NORTHERN HARDWOOD FORESTS ; MICROBIAL BIOMASS-C ; SOIL SOLUTION ; MATTER DECOMPOSITION ; TEMPERATE FORESTS ; MINERAL SOIL ; DEPOSITION ; ECOSYSTEM ; LITTER ; DOC |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000449895600004 |
| 源URL | [http://210.75.237.14/handle/351003/30095]  |
| 专题 | 公共实验与分析中心 成都生物研究所_公共实验技术中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu, Sichuan, Peoples R China; 2.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China |
| 推荐引用方式 GB/T 7714 | Chang, Ruiying,Li, Na,Sun, Xiangyang,et al. Nitrogen addition reduces dissolved organic carbon leaching in a montane forest[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,127(2018):31-38. |
| APA | Chang, Ruiying,Li, Na,Sun, Xiangyang,Hu, Zhaoyong,Bai, Xuesong,&Wang, Genxu.(2018).Nitrogen addition reduces dissolved organic carbon leaching in a montane forest.SOIL BIOLOGY & BIOCHEMISTRY,127(2018),31-38. |
| MLA | Chang, Ruiying,et al."Nitrogen addition reduces dissolved organic carbon leaching in a montane forest".SOIL BIOLOGY & BIOCHEMISTRY 127.2018(2018):31-38. |
入库方式： OAI收割
来源：成都生物研究所
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