A 'Get-Save-Return' process continuum runs on phosphorus economy among subtropical tree species
文献类型：期刊论文
| 作者 | Jiang, Lei; Wang, Huimin; Li, Shenggong; Dai, Xiaoqin; Meng, Shengwang; Fu, Xiaoli; Yan, Han; Zheng, Jiajia; Ma, Ning; Kou, Liang |
| 刊名 | JOURNAL OF ECOLOGY
 |
| 出版日期 | 2023-02-01 |
| 卷号 | N/A |
| 关键词 | arbuscular mycorrhizal species ectomycorrhizal species leaf economics spectrum litter decomposition nutrient economy nutrient resorption root absorption |
| ISSN号 | 0022-0477 |
| DOI | 10.1111/1365-2745.14066 |
| 文献子类 | Article; Early Access |
| 英文摘要 | Plants allocate nutrients to new leaves via making a cost-benefit trade-off between root nutrient absorption ('get') and leaf nutrient resorption ('save'). This active trade-off in nutrient acquisition pathways may cause a passive trade-off between resorption and decomposition ('return'). However, whether these nutrient-associated processes are linked and form a 'get-save-return' (GSR) continuum, and its linkages with the above-ground leaf economics spectrum (LES) and the below-ground mycorrhizal association remain unclear.Here, we present the first empirical evidence of a direct link among multiple nutrient-associated processes and tested this continuum hypothesis by synchronously integrating root nutrient absorption, leaf nutrient resorption and leaf litter decomposition of 15 co-occurring tree species hosting either arbuscular mycorrhizal or ectomycorrhizal fungi in subtropical forests of China.Across species, there was an active trade-off between phosphorus (P) absorption and resorption, which further caused a passive trade-off between P resorption and leaf litter decomposition, indicating that the GSR continuum exists and runs on P economy. However, these processes associated with nitrogen economy were not well linked. Interestingly, the loading scores of species on the LES were positively correlated with root P absorption, negatively with leaf P resorption and positively with leaf litter decomposition. These linkages indicate that species running in the 'fast lane' had greater root P absorption, lower leaf P resorption and faster leaf litter decomposition than species running in the 'slow lane', and that the process-based GSR continuum follows the trait-based 'fast-slow' LES. Furthermore, the continuum on P economy emerged evidently in the ectomycorrhizal tree species rather than in the arbuscular mycorrhizal tree species, indicating critical control of mycorrhizal association over the continuum.Synthesis. Overall, these results demonstrate the existence of the GSR continuum on tree P economy, which conforms to the economics spectrum theory but varies with mycorrhizal association type. Our findings provide a process-based framework for mechanistic understanding of the whole plant nutrient economy and ecosystem nutrient cycling, and facilitate improved predictions of biogeochemical models. |
| WOS关键词 | LITTER DECOMPOSITION ; NUTRIENT RESORPTION ; LIFE-SPAN ; ARBUSCULAR MYCORRHIZAL ; ABSORPTIVE ROOTS ; LEAF TRAITS ; PLANT ; NITROGEN ; LEAVES ; CARBON |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000919529100001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/189635]  |
| 专题 | 千烟洲站森林生态系统研究中心_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Jiang, Lei,Wang, Huimin,Li, Shenggong,et al. A 'Get-Save-Return' process continuum runs on phosphorus economy among subtropical tree species[J]. JOURNAL OF ECOLOGY,2023,N/A. |
| APA | Jiang, Lei.,Wang, Huimin.,Li, Shenggong.,Dai, Xiaoqin.,Meng, Shengwang.,...&Kou, Liang.(2023).A 'Get-Save-Return' process continuum runs on phosphorus economy among subtropical tree species.JOURNAL OF ECOLOGY,N/A. |
| MLA | Jiang, Lei,et al."A 'Get-Save-Return' process continuum runs on phosphorus economy among subtropical tree species".JOURNAL OF ECOLOGY N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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