Effects of nitrogen addition on root respiration of trees and understory herbs at different temperatures in Pinus tabulaeformis forest
文献类型：期刊论文
| 作者 | Jing, Hang2; Liu, Ying1,2; Wang, Guoliang1,2; Liu, Guobin1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2021-03-26 |
| 页码 | 13 |
| 关键词 | Root respiration Nitrogen addition Temperature sensitivity Root diameter Chemical property |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-021-04925-w |
| 通讯作者 | Wang, Guoliang(glwang@nwsuaf.edu.cn) |
| 英文摘要 | Aims Nitrogen (N) addition had differential effects on root respiration. However, the reasons and mechanism have not yet been analyzed. We speculated that the differential effects of N addition are related to the N addition rate, root diameter, and temperature. Meanwhile, tree and understory herb in forest ecosystems maybe another reason that root respiration has different responses. Methods N addition was performed in a Pinus tabulaeformis forest for six years. P. tabulaeformis and Carex lanceolata fine roots with three size classes (< 0.5 mm; 0.5-1.0 mm; 1.0-2.0 mm) were sampled for respiration and temperature sensitivity measurement at three temperatures and chemical analysis. Results (1) N addition increased the root respiration of P. tabulaeformis and had the maximum values in 3, 6, and 9 g N m(-2) y(-1) at 1 degrees C, 14 degrees C, and 18 degrees C, respectively. (2) The root respiration of C. lanceolata significantly decreased under N addition only at 18 degrees C. (3) The effect of N addition on temperature sensitivity of root respiration was also varied due to N addition rate. (4) N and carbon/nitrogen ratio were the main driving factors of root respiration of P. tabulaeformis, while chemical properties had a slight driving effect on root respiration of C. lanceolata. Conclusions N addition rate and temperature were the reasons for the differential effect of N addition on root respiration, but not root diameter. Furthermore, root respirations of tree and understory herb have varied changing mechanism, which demonstrated an apparent species specificity. |
| 资助项目 | National Natural Science Foundation of China[41671513] ; National Key Research and Development Program of China[2017YFC0504601] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000633269300001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161980]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Guoliang |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jing, Hang,Liu, Ying,Wang, Guoliang,et al. Effects of nitrogen addition on root respiration of trees and understory herbs at different temperatures in Pinus tabulaeformis forest[J]. PLANT AND SOIL,2021:13. |
| APA | Jing, Hang,Liu, Ying,Wang, Guoliang,&Liu, Guobin.(2021).Effects of nitrogen addition on root respiration of trees and understory herbs at different temperatures in Pinus tabulaeformis forest.PLANT AND SOIL,13. |
| MLA | Jing, Hang,et al."Effects of nitrogen addition on root respiration of trees and understory herbs at different temperatures in Pinus tabulaeformis forest".PLANT AND SOIL (2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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