Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis)

doi:10.1016/j.scitotenv.2020.144381

	Biochar addition affects root morphology and nitrogen uptake capacity common reed (Phragmites australis)
	Li, Qian-Wei 1; Liang, Jin-Feng 1,3; Zhang, Xiao-Ya 1; Feng, Jiu-Ge 1; Song, Ming-Hua 4; Gao, Jun-Qin 1,2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-04-20
卷号	766 页码:7
关键词	Biochar Nitrogen addition Root morphogenesis Stable isotope
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.144381
通讯作者	Gao, Jun-Qin(gaojq@bjfu.edu.cn)
英文摘要	Nitrogen (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.
资助项目	National 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
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000617676800090
资助机构	National 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
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162102]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Jun-Qin
作者单位	1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China 2.Key Lab Ecol Protect Yellow River Basin Natl Fore, Beijing, Peoples R China 3.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, A11 Datun Rd, Beijing 100101, Peoples R China
推荐引用方式 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.