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Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis)
Li, Qian-Wei1; Liang, Jin-Feng1,2; Zhang, Xiao-Ya1; Feng, Jiu-Ge1; Song, Ming-Hua3; Gao, Jun-Qin1,4
2021-04-20
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume766Pages:7
Corresponding AuthorGao, Jun-Qin(gaojq@bjfu.edu.cn)
AbstractNitrogen (N) is a key factor that limits plant growth in most terrestrial ecosystems, and biochar reportedly improves soil characteristics and grain yields. However, the effects of biochar on plant N uptake in wetland ecosystems and the underlying mechanisms of these effects remain unclear. Therefore, our study sought to characterise the effects of biochar addition on Phragmites australis N absorption rates at two different N deposition conditions [30 and 60 kg N hm(-2) yr(-1); i.e., "low" and "high" N treatments, respectively]. Our results demonstrated that biochar significantly promoted root biomass growth in P. australis in the high N treatment group. In contrast, the low N treatment group exhibited an increased proportion of fine roots and a decrease in the average P. australis root diameter. The N absorption rate of P. australis in the low N treatment group significantly increased with biochar addition and ammonium N became the preferred N source. The absorption rates of both ammonium and nitrate N were negatively correlated with the average P. austratis root diameter. 'therefore, our findings indicate that biochar may affect the N uptake strategy of P. australis by altering root morphogenesis, thereby providing new insights into potential restoration strategies for wetland vegetation. (C) 2020 Elsevier B.V. All rights reserved.
KeywordBiochar Nitrogen addition Root morphogenesis Stable isotope
DOI10.1016/j.scitotenv.2020.144381
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0505903] ; National Natural Science Foundation of China[41871077] ; Innovative Transdisciplinary Program Ecological Restoration Engineering of the Beijing Municipal Education Commission
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Innovative Transdisciplinary Program Ecological Restoration Engineering of the Beijing Municipal Education Commission
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000617676800090
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/162103
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGao, Jun-Qin
Affiliation1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China
2.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11 Datun Rd, Beijing 100101, Peoples R China
4.Key Lab Ecol Protect Yellow River Basin Natl Fore, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, Qian-Wei,Liang, Jin-Feng,Zhang, Xiao-Ya,et al. Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis)[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,766:7.
APA Li, Qian-Wei,Liang, Jin-Feng,Zhang, Xiao-Ya,Feng, Jiu-Ge,Song, Ming-Hua,&Gao, Jun-Qin.(2021).Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis).SCIENCE OF THE TOTAL ENVIRONMENT,766,7.
MLA Li, Qian-Wei,et al."Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis)".SCIENCE OF THE TOTAL ENVIRONMENT 766(2021):7.
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