Plasticity of fine-root functional traits in the litter layer in response to nitrogen addition in a subtropical forest plantation
文献类型：期刊论文
| 作者 | Liu, Ruiqiang1,2; Huang, Zhiqun1; McCormack, M. Luke3,4; Zhou, Xuhui2; Wan, Xiaohua1; Yu, Zaipeng1; Wang, Minhuang1; Zheng, Lujia1 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 415期号:1-2页码:317-330 |
| 关键词 | Fine root Mytilaria laosensis Nitrogen addition Nutrient concentrations Root morphology Trait plasticity |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-016-3168-7 |
| 通讯作者 | Huang, Zhiqun(zhiqunhuang@hotmail.com) |
| 英文摘要 | Fine-root traits mediate the capacity of plants to acquire soil resources in different environments. This study aimed to examine the changes of fine-root traits when roots proliferate into the litter layer vs. mineral soils, and to determine fine-root trait plasticity of these roots in response to nitrogen (N) addition. A one-year N addition experiment was conducted in a 22-year-old broadleaf Mytilaria laosensis (Hamamelidaceae) plantation in subtropical China. Newly produced fine roots were collected monthly from the litter layer and upper mineral soil (0-10 cm) layer to measure root morphological traits and nutrient concentrations. Fine-root production was determined using ingrowth mesh screens in the litter layer. Fine-root production in the litter layer in the Mytilaria laosensis plantation was 2.6 g m(-2) yr.(-1) but increased 3- to 5-fold with N addition. Significant differences in fine-root morphological traits and nutrient concentrations were found between the litter layer and 0-10 cm mineral soil layer. Fine roots in the litter layer were thinner, with higher specific root length (SRL), higher specific root area (SRA), a higher proportion of fine-root biomass in lower, more absorptive root orders, and lower root tissue density (RTD) than those in 0-10 cm mineral soil layer. Higher carbon (C), N, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) concentrations and lower C:N ratio (C/N) were also observed in fine roots in the litter layer, compared to the 0-10 cm mineral soil layer. Nitrogen addition significantly increased root P, K, and Ca concentrations, but had no effect on Mg concentration. Nitrogen addition did not affect most fine-root morphological traits but did result in decreased root diameter. Compared with the mineral soil, roots produced in the litter layer generally reflected a more absorptive strategy with smaller root diameter and lower RTD and with higher SRL, SRA, and nutrient concentrations which together are generally associated with more metabolically active, but shorter lived roots. Strong responses of fine-root production and nutrient concentrations to N addition also suggest that N may be a driving factor for fine-root growth into the litter layer. Further studies are required to identify the effect of fine-root growth into the litter layer on microbial activity. |
| WOS关键词 | NUTRIENT FORAGING STRATEGIES ; LOWLAND TROPICAL FOREST ; AMAZONIAN RAIN-FOREST ; LIFE-SPAN ; TERRESTRIAL ECOSYSTEMS ; MYCORRHIZAL FUNGI ; TEMPERATE FOREST ; GROWTH ; DECOMPOSITION ; TREES |
| 资助项目 | National Natural Science Foundation of China[41371269] ; National Natural Science Foundation of China[31570604] ; National Natural Science Foundation of China[31625007] ; National 973 Program of China[2014CB954002] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000403495500023 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National 973 Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/63375]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Huang, Zhiqun |
| 作者单位 | 1.Fujian Normal Univ, Coll Geog Sci, Minist Sci & Technol & Fujian Prov Funded, Key Lab Subtrop Mt Ecol, Fuzhou 350007, Peoples R China 2.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Univ Minnesota, Dept Plant Biol, 1445 Gortner Ave, St Paul, MN 55108 USA |
| 推荐引用方式 GB/T 7714 | Liu, Ruiqiang,Huang, Zhiqun,McCormack, M. Luke,et al. Plasticity of fine-root functional traits in the litter layer in response to nitrogen addition in a subtropical forest plantation[J]. PLANT AND SOIL,2017,415(1-2):317-330. |
| APA | Liu, Ruiqiang.,Huang, Zhiqun.,McCormack, M. Luke.,Zhou, Xuhui.,Wan, Xiaohua.,...&Zheng, Lujia.(2017).Plasticity of fine-root functional traits in the litter layer in response to nitrogen addition in a subtropical forest plantation.PLANT AND SOIL,415(1-2),317-330. |
| MLA | Liu, Ruiqiang,et al."Plasticity of fine-root functional traits in the litter layer in response to nitrogen addition in a subtropical forest plantation".PLANT AND SOIL 415.1-2(2017):317-330. |
入库方式： OAI收割
来源：地理科学与资源研究所
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