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Nitrogen deposition and phosphorus addition alter mobility of trace elements in subtropical forests in China
Wu, Anqi1,2; Hu, Xiaofei3; Wang, Fangchao3; Guo, Chunlan1,2; Wang, Huimin4; Chen, Fu-Sheng1,2
2021-08-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume781Pages:13
Corresponding AuthorChen, Fu-Sheng(chenfusheng@jxau.edu.cn)
AbstractTrace elements are important in sustaining the functioning of forest ecosystems. However, knowing how nitrogen (N) deposition and phosphorus (P) addition alter the mobility of trace elements, and how trees equilibrate root capture and leaf resorption of trace elements remains undear. We measured concentrations of five elements in rhizospheric soils, fine roots, twigs, and leaves in Chinese fir plantations fertilized with P (5 g P m(-2) a(-1)) and/or N (5 and 10 gNm(-2) a(-1)) over 5 years in subtropical China and calculated these mobility factors of four trace elements and Mg from soils to roots and from roots to twigs and leaves. Results showed that N addition increased the capacity of roots to capture Mg and to twigs re-adsorb Fe. Phosphorus regulated the employment of a Mn acquisition strategy under N deposition. Nitrogen addition increased the capacity of roots to capture and the efficiency of leaves to re-adsorb Mn without P addition while only increased the Mn capturing capacity with P addition. The Mg, Fe, and Mn were more sensitive than Cu and Zn to N deposition and P add ilion.The capture-resorption tradeoff depended more on element types than N and P supplies. In addition, the tradeoff between capture and resorption could be reflected by the transport capacity since transport capacities of Mg, Fe, Mn, and Zn were positively correlated with their corresponding capture capacities or resorption efficiencies. Furthermore, structural equation modeling showed the element mobility tended to be dominated by P rather than N. These findings suggest subtropical forests would adapt to atmospheric N deposition and soil P limitation by adjusting the tradeoff between capture and resorption strategies. The establishment of trace element mobility and tradeoff patterns provides insights into trace element cycling under human-driven nutrient imbalance scenarios. (C) 2021 Elsevier B.V. All rights reserved.
KeywordNitrogen deposition Phosphorus addition Trace element mobility Root capture Transport process Leaf and twig resorption
DOI10.1016/j.scitotenv.2021.146778
WOS KeywordNUTRIENT-ACQUISITION STRATEGIES ; SOIL MICROBIAL COMMUNITIES ; RESORPTION EFFICIENCIES ; ATMOSPHERIC NITROGEN ; ABSORPTIVE ROOTS ; PLANT ; RESPONSES ; LEAVES ; GROWTH ; LEAF
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[32060263] ; National Natural Science Foundation of China[31870427] ; National Natural Science Foundation of China[31730014]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000655619900003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163908
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Fu-Sheng
Affiliation1.Jiangxi Agr Univ, Key Lab Natl Forestry & Grassland Adm Forest Ecos, Nanchang 330045, Jiangxi, Peoples R China
2.Jiangxi Agr Univ, Coll Forestry, Jiangxi Prov Key Lab Silviculture, Nanchang 330045, Jiangxi, Peoples R China
3.Nanchang Univ, Sch Management, Nanchang 330038, Jiangxi, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Wu, Anqi,Hu, Xiaofei,Wang, Fangchao,et al. Nitrogen deposition and phosphorus addition alter mobility of trace elements in subtropical forests in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,781:13.
APA Wu, Anqi,Hu, Xiaofei,Wang, Fangchao,Guo, Chunlan,Wang, Huimin,&Chen, Fu-Sheng.(2021).Nitrogen deposition and phosphorus addition alter mobility of trace elements in subtropical forests in China.SCIENCE OF THE TOTAL ENVIRONMENT,781,13.
MLA Wu, Anqi,et al."Nitrogen deposition and phosphorus addition alter mobility of trace elements in subtropical forests in China".SCIENCE OF THE TOTAL ENVIRONMENT 781(2021):13.
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