Contrasting root foraging strategies of two subtropical coniferous forests under an increased diversity of understory species
文献类型：期刊论文
| 作者 | Yan, Han1,2; Kou, Liang1; Wang, Huimin1,2,3; Fu, Xiaoli1; Dai, Xiaoqin1; Li, Shenggong1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 436期号:1-2页码:427-438 |
| 关键词 | Absorptive fine roots Branching order Competition Environmental plasticity Foraging strategy Root traits |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-019-03936-y |
| 通讯作者 | Kou, Liang(koul@igsnrr.ac.cn) |
| 英文摘要 | Background and aimsStudies on the aboveground growth and traits of plants suggest that plants exhibit faster growth with greater plasticity in leaf traits to adapt to changing environments. However, our knowledge of belowground growth and trait responses and associated root foraging strategies, under competition remains limited.MethodsUsing an understory species-addition experiment, we investigated the responses of function-based root (absorptive fine roots [AFRs] vs. transport fine roots [TFRs]) growth, mycorrhizal association, and order-based root traits (morphological, architectural, and chemical traits) of Pinus massoniana (native species) and Pinus elliottii (exotic species), which are the dominant coniferous tree species in subtropical China.ResultsHigher understory-species diversity increased the biomass of AFRs, but not TFRs and total fine roots (AFRs plus TFRs) of both species. Higher diversity increased the biomass ratio of the AFRs and TFRs of P. elliottii, indicating a tradeoff in plant carbon investment between the two functional root modules for P. elliottii. Higher diversity increased the total root length of P. massoniana, but did not affect that of P. elliottii. Increased species diversity decreased the ectomycorrhizal colonization rate of P. massoniana, but increased that of P. elliottii. Increased species diversity altered the branching-related traits (increased branching ratio and intensity), but did not affect the morphological (diameter, specific root length, and root tissue density) or chemical traits across the root orders of either species.ConclusionsOur findings indicate that P. elliottii employed dual root foraging strategies (growth and mycorrhizal strategies) and had a cost-benefit tradeoff between AFR and TFR construction. In comparison, P. massoniana only accelerated root growth under competition. These results facilitate a better understanding of the root foraging strategies of plants and the rapid adaptation of exotic species in novel environments. |
| WOS关键词 | FINE-ROOT ; NORWAY SPRUCE ; MIXED FORESTS ; SOIL VOLUME ; COMPETITION ; PLANT ; PINE ; COMPLEMENTARITY ; PRODUCTIVITY ; ARCHITECTURE |
| 资助项目 | National Natural Science Foundation of China[31730014] ; National Natural Science Foundation of China[31670635] ; National Natural Science Foundation of China[31700379] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000462031100027 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/48599]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Kou, Liang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Jiangxi Prov Key Lab Ecosyst Proc & Informat, Taihe 343725, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Han,Kou, Liang,Wang, Huimin,et al. Contrasting root foraging strategies of two subtropical coniferous forests under an increased diversity of understory species[J]. PLANT AND SOIL,2019,436(1-2):427-438. |
| APA | Yan, Han,Kou, Liang,Wang, Huimin,Fu, Xiaoli,Dai, Xiaoqin,&Li, Shenggong.(2019).Contrasting root foraging strategies of two subtropical coniferous forests under an increased diversity of understory species.PLANT AND SOIL,436(1-2),427-438. |
| MLA | Yan, Han,et al."Contrasting root foraging strategies of two subtropical coniferous forests under an increased diversity of understory species".PLANT AND SOIL 436.1-2(2019):427-438. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。