IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau?
Hong, Jiangtao1; Ma, Xingxing2; Yan, Yan1; Zhang, Xiaoke3; Wang, Xiaodan1
2018
Source PublicationPLANT AND SOIL
ISSN0032-079X
EISSN1573-5036
Volume424Issue:1-2Pages:63-72
SubtypeArticle
AbstractNitrogen (N) is one of the most important limiting factors influencing plant growth and reproduction in alpine and tundra ecosystems. However, in situ observations of the effects of root traits on N absorption by alpine plant species are still lacking. We investigated the rates of N uptake and the effect of root characteristics in ten common herbaceous alpine plant species using a N-15 isotope tracer technique and the root systems of plants growing in a semi-arid steppe environment on the Tibetan Plateau. Our objective was to determine the root traits (root biomass, volume, surface area, average diameter, length, specific root length and specific root area) that make the largest contribution to the total uptake of N (N-15-NO3 (-), N-15-NH4 (+) or N-15-glycine) by alpine plant species. Monocotyledonous species had higher absorption rates for N-15-NH4 (+), N-15-NO3 (-), N-15-glycine and total N-15 than dicotyledonous species (P < 0.05). The root biomass, volume, surface area and average diameter were negatively correlated with the absorption capacity for N-15-NH4 (+), N-15-NO3 (-) and total N-15 across the ten alpine plant species. However, the specific root length and the specific root area had significantly positive effects on the uptake of N. In contrast with traditional views on the uptake of N, the N uptake rate was not improved by a larger root volume or root surface area for these alpine plant species in a high-altitude ecosystem. Root morphological traits had greater impacts on N absorption than traits related to the root system size in alpine herbaceous plants.
KeywordAmmonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption
DOI10.1007/s11104-017-3434-3
Indexed BySCI
WOS KeywordORGANIC NITROGEN ; SOIL MICROBES ; FINE ROOTS ; NICHE COMPLEMENTARITY ; NITRATE UPTAKE ; ARCTIC TUNDRA ; PEACH-TREES ; FOREST ; FORMS ; PREFERENCES
Language英语
Quartile1区
Funding ProjectState Key Research Development Program of China[2016YFC0502002] ; National Natural Science Foundation of China[41701343] ; 135 Key Cultivation Program of the Institute of Mountain Hazard and Environment ; Chinese Academy of Sciences Light of West China program
TOP
WOS Research AreaAgriculture ; Plant Sciences
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000430192000005
Funding OrganizationState Key Research Development Program of China ; National Natural Science Foundation of China ; 135 Key Cultivation Program of the Institute of Mountain Hazard and Environment ; Chinese Academy of Sciences Light of West China program
PublisherSPRINGER
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20679
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang, Xiaodan
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China
2.Shanxi Normal Univ, Coll Urban & Environm Sci, Linfen 041000, Peoples R China
3.Hohai Univ, Sch Publ Adm, Nanjing 210098, Jiangsu, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Hong, Jiangtao,Ma, Xingxing,Yan, Yan,et al. Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau?[J]. PLANT AND SOIL,2018,424(1-2):63-72.
APA Hong, Jiangtao,Ma, Xingxing,Yan, Yan,Zhang, Xiaoke,&Wang, Xiaodan.(2018).Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau?.PLANT AND SOIL,424(1-2),63-72.
MLA Hong, Jiangtao,et al."Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau?".PLANT AND SOIL 424.1-2(2018):63-72.
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