NITROGEN ENRICHMENT RESTRUCTURING ROOT-FUNGUS COORDINATION THROUGH TRAIT-BASED PARTITIONING AND SYMBIOSIS-DEPENDENT FEEDBACK DECOUPLING
文献类型：期刊论文
| 作者 | Li, Y. B.1,2,3; Zhou, M. X.2; Sun, M. G.3; Chi, B.2,3; Wang, B.2; Wang, N.2; Wang, J. Y.2; Gao, K.2; Jia, C.2 |
| 刊名 | APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 4598 |
| 卷号 | N/A |
| 关键词 | N addition root morphological traits root chemical traits mycorrhizal types mycorrhizal morphological characteristics |
| ISSN号 | 1589-1623 |
| DOI | 10.15666/aeer/2401_905923 |
| 产权排序 | 2 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Atmospheric nitrogen (N) deposition is intensifying, yet its effects on fine-root and mycorrhizal trait coordination across mycorrhizal types and root functions remain poorly understood, limiting predictions of belowground responses. We conducted a factorial field experiment across 12 plots in a temperate forest, using five dominant tree species (three Ectomycorrhizal (ECM), two Arbuscular mycorrhizal (AM)), four N treatments (0, 25, 50, 75 kg Nha(-1)yr(-1)), and functional root classifications (absorptive vs. transport roots), to evaluate integrated shifts in morphological, chemical, and mycorrhizal traits. N enrichment significantly altered root traits in a symbiosis- and function-dependent manner. ECM transport roots showed 38-61% increases in diameter and length under 50-75 kg Nha(-1)yr(-1), whereas AM absorptive roots increased specific root length (SRL) (8.3-10.1 mg(-1)) and surface area (6.9-9.5 cm(2)g(-1)) at moderate N levels. Root tissue density (RTD) declined by 22-45% across both types. Mycorrhizal root colonization (MRC) and hyphal traits decreased by 58% in AM roots but remained stable in ECM roots. Root N concentration increased by 19-35%, while P content declined in AM absorptive roots. Our results reveal a N-driven reorganization of root-fungus coordination, governed by symbiotic identity and root function. The observed trait plasticity and nutrient decoupling underscore a shift toward plant-dominant nutrient uptake strategies, highlighting the vulnerability of soil-plant-fungus feedback loops under chronic N loading. These findings provide critical trait-based evidence for forecasting nitrogen-driven shifts in ecosystem nutrient cycling and root-fungus functional decoupling, while offering mechanistic insight relevant to soil stability and ecological slope-engineering practices under intensified nutrient loading. |
| URL标识 | 查看原文 |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001654866100001 |
| 出版者 | ALOKI Applied Ecological Research and Forensic Inst Ltd |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219519]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Zhou, M. X.; Sun, M. G. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Heilongjiang Inst Construct Technol, Harbin 150001, Peoples R China 3.Long Jian Rd & Bridge Co Ltd, Harbin 150001, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, Y. B.,Zhou, M. X.,Sun, M. G.,et al. NITROGEN ENRICHMENT RESTRUCTURING ROOT-FUNGUS COORDINATION THROUGH TRAIT-BASED PARTITIONING AND SYMBIOSIS-DEPENDENT FEEDBACK DECOUPLING[J]. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,4598,N/A. |
| APA | Li, Y. B..,Zhou, M. X..,Sun, M. G..,Chi, B..,Wang, B..,...&Jia, C..(4598).NITROGEN ENRICHMENT RESTRUCTURING ROOT-FUNGUS COORDINATION THROUGH TRAIT-BASED PARTITIONING AND SYMBIOSIS-DEPENDENT FEEDBACK DECOUPLING.APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,N/A. |
| MLA | Li, Y. B.,et al."NITROGEN ENRICHMENT RESTRUCTURING ROOT-FUNGUS COORDINATION THROUGH TRAIT-BASED PARTITIONING AND SYMBIOSIS-DEPENDENT FEEDBACK DECOUPLING".APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH N/A(4598). |
入库方式： OAI收割
来源：地理科学与资源研究所
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