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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, Lei3; Wang, Huimin1,2; Li, Shenggong2,3; Dai, Xiaoqin1; Meng, Shengwang1; Fu, Xiaoli1,2; Yan, Han1,2; Zheng, Jiajia2,3; Ma, Ning2,3; Kou, Liang1,2
刊名JOURNAL OF ECOLOGY
出版日期2023-01-24
页码14
ISSN号0022-0477
关键词arbuscular mycorrhizal species ectomycorrhizal species leaf economics spectrum litter decomposition nutrient economy nutrient resorption root absorption
DOI10.1111/1365-2745.14066
通讯作者Kou, Liang(koul@igsnrr.ac.cn)
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
资助项目National Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[32222059] ; National Natural Science Foundation of China[32071557] ; National Natural Science Foundation of China[31730014]
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
语种英语
出版者WILEY
WOS记录号WOS:000919529100001
资助机构National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/189463]  
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, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Natl Ecosyst Sci Data Ctr, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
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,2023:14.
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,14.
MLA Jiang, Lei,et al."A 'Get-Save-Return' process continuum runs on phosphorus economy among subtropical tree species".JOURNAL OF ECOLOGY (2023):14.

入库方式： OAI收割

来源：地理科学与资源研究所

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