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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/nph.15066
|2 doi
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|a pubmed24n0938.xml
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|a (DE-627)NLM281690898
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|a (NLM)29512162
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Kou, Liang
|e verfasserin
|4 aut
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|a Nitrogen deposition increases root production and turnover but slows root decomposition in Pinus elliottii plantations
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 01.10.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
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|a Fine roots of woody plants comprise multiple root orders, which can be functionally partitioned into two pools: absorptive fine roots (AFRs, orders 1, 2) and transport fine roots (TFRs, orders 3-5). However, the function-based fine-root dynamics and especially their responses to increased nitrogen (N) availability remain unclear. We explored dynamic responses of both AFRs and TFRs of Pinus elliottii to N addition in subtropical China based on a 4-yr minirhizotron experiment and a two-stage - early (0.5 yr) vs late (4 yr) - decomposition experiment. N addition increased the production, mortality, and turnover of AFRs but not TFRs. High rates of N persistently inhibited AFR decomposition but affected TFR decomposition differentially at the early (no effect) and late (negative effect) stages. The increased production of AFRs was driven by N-induced decrease in foliar and soil phosphorus (P) concentrations. The decreased decomposition of AFRs might be due to the increased acid-unhydrolyzable residues in decomposing roots. AFRs are the resource-acquiring module, the increased carbon allocation to AFRs may represent a P-acquiring strategy when N no longer limits growth of P. elliottii. Our results suggest that AFRs and TFRs respond differently to N deposition, both in terms of production, mortality, and turnover and in terms of decomposition
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a absorptive fine root
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|a branching order
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|a carbon sequestration
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|a functional module
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|a minirhizotron
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|a nitrogen deposition
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|a nutrient limitation
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|a Soil
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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| 700 |
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|a Jiang, Lei
|e verfasserin
|4 aut
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|a Fu, Xiaoli
|e verfasserin
|4 aut
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|a Dai, Xiaoqin
|e verfasserin
|4 aut
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|a Wang, Huimin
|e verfasserin
|4 aut
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|a Li, Shenggong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 218(2018), 4 vom: 01. Juni, Seite 1450-1461
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:218
|g year:2018
|g number:4
|g day:01
|g month:06
|g pages:1450-1461
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|u http://dx.doi.org/10.1111/nph.15066
|3 Volltext
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|d 218
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|h 1450-1461
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