Root standing crop and chemistry after six years of soil warming in a temperate forest
文献类型：期刊论文
| 作者 | Zhou, Yumei1; Tang, Jianwu3; Melillo, Jerry M.3; Butler, Sarah3; Mohan, Jacqueline E.2 |
| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 31期号:7页码:707-717 |
| 关键词 | Carbon Nitrogen Root Biomass Root Diameter Root Necromass |
| ISSN号 | 0829-318X |
| DOI | 10.1093/treephys/tpr066 |
| 英文摘要 | Examining the responses of root standing crop (biomass and necromass) and chemistry to soil warming is crucial for understanding root dynamics and functioning in the face of global climate change. We assessed the standing crop, total nitrogen (N) and carbon (C) compounds in tree roots and soil net N mineralization over the growing season after 6 years of experimental soil warming in a temperate deciduous forest in 2008. Roots were sorted into four different categories: live and dead fine roots (<= 1 mm in diameter) and live and dead coarse roots (1-4 mm in diameter). Total root standing crop (live plus dead) in the top 10 cm of soil in the warmed area was 42.5% (378.4 vs. 658.5 g m(-2)) lower than in the control area, while live root standing crop in the warmed area was 62% lower than in the control area. Soil net N mineralization over the growing season increased by 79.4% in the warmed relative to the control area. Soil warming did not significantly change the concentrations of C and C compounds (sugar, starch, hemicellulose, cellulose and lignin) in the four root categories. However, total N concentration in the live fine roots in the warmed area was 10.5% (13.7 vs. 12.4 mg g(-1)) higher and C: N ratio was 8.6% (38.5 vs. 42.1) lower than in the control area. The increase in N concentration in the live fine roots could be attributed to the increase in soil N availability due to soil warming. Net N mineralization was negatively correlated with both live and dead fine roots in the mineral soil that is home to the majority of roots, suggesting that soil warming increases N mineralization, decreases fine root biomass and thus decreases C allocation belowground. |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000294125300004 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://210.72.129.5/handle/321005/121795]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Tang, Jianwu |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Univ Georgia, Odum Sch Ecol, Athens, GA 30602 USA 3.Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA |
| 推荐引用方式 GB/T 7714 | Zhou, Yumei,Tang, Jianwu,Melillo, Jerry M.,et al. Root standing crop and chemistry after six years of soil warming in a temperate forest[J]. TREE PHYSIOLOGY,2011,31(7):707-717. |
| APA | Zhou, Yumei,Tang, Jianwu,Melillo, Jerry M.,Butler, Sarah,&Mohan, Jacqueline E..(2011).Root standing crop and chemistry after six years of soil warming in a temperate forest.TREE PHYSIOLOGY,31(7),707-717. |
| MLA | Zhou, Yumei,et al."Root standing crop and chemistry after six years of soil warming in a temperate forest".TREE PHYSIOLOGY 31.7(2011):707-717. |
入库方式： OAI收割
来源：沈阳应用生态研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。