A modified soil coring method for measuring fine root production, mortality and decomposition in forests
文献类型：期刊论文
| 作者 | Li, Xuefeng2,3; Lange, Holger1 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 91页码:192-199 |
| ISSN号 | 0038-0717 |
| 关键词 | Soil Coring Fine Root Production Mortality Decomposition Forest |
| DOI | 10.1016/j.soilbio.2015.08.015 |
| 英文摘要 | Fine root (diameter < 2 mm) production, mortality and decomposition have been poorly estimated at ecosystem scales due to technical limitations. The soil coring method can accurately assess fine root biomass and necromass, but the concurrent growth, death and decomposition processes were not reasonably assessed during the sampling period, leading to greatly biased rate estimates. We developed a dynamic-flow method with two variations to address these processes by combining the soil coring method with an improved decomposition experiment. For a certain interval i (1 <= i) in the growing season, the dead fine roots were classified into fine roots dying before the start of interval i (G(l-i)) and those dying during interval i (G(ll-i) ). The decompositions of G(l-i) and G(ll-i) were separately quantified and integrated into a modified mass balance model to estimate the production, mortality and decomposition. An example study conducted in a secondary Mongolian oak (Quercus mongolica Fischer ex Ledebour) forest showed that fine root production, mortality and decomposition were greatly underestimated by conventional soil coring methods failing to address the simultaneous growth, death and decomposition processes but overestimated by the method in which the decompositions of G(l-i) and G(ll-i) were not separately determined and the decomposition rate was assumed to be constant. The dynamic-flow method greatly improved the accuracy of fine root estimates and can be widely applied to forests. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000364502900022 |
| 源URL | [http://210.72.129.5/handle/321005/122273]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Li, Xuefeng |
| 作者单位 | 1.Norwegian Inst Bioecon Res, N-1431 As, Norway 2.Chinese Acad Sci, Inst Appl Ecol, Beijing 100864, Peoples R China 3.N Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USA |
| 推荐引用方式 GB/T 7714 | Li, Xuefeng,Lange, Holger. A modified soil coring method for measuring fine root production, mortality and decomposition in forests[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,91:192-199. |
| APA | Li, Xuefeng,&Lange, Holger.(2015).A modified soil coring method for measuring fine root production, mortality and decomposition in forests.SOIL BIOLOGY & BIOCHEMISTRY,91,192-199. |
| MLA | Li, Xuefeng,et al."A modified soil coring method for measuring fine root production, mortality and decomposition in forests".SOIL BIOLOGY & BIOCHEMISTRY 91(2015):192-199. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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