| Which root traits determine nitrogen uptake by alpine plant species on the Tibetan Plateau? | |
Hong, Jiangtao1 ; Ma, Xingxing2; Yan, Yan1; Zhang, Xiaoke3; Wang, Xiaodan1
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| 2018 | |
| Source Publication | PLANT AND SOIL
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| ISSN | 0032-079X |
| EISSN | 1573-5036 |
| Volume | 424Issue:1-2Pages:63-72 |
| Subtype | Article |
| Abstract | Nitrogen (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. |
| Keyword | Ammonium nitrogen Nitrate nitrogen Glycine Root morphology Nitrogen absorption |
| DOI | 10.1007/s11104-017-3434-3 |
| Indexed By | SCI |
| WOS Keyword | ORGANIC NITROGEN ; SOIL MICROBES ; FINE ROOTS ; NICHE COMPLEMENTARITY ; NITRATE UPTAKE ; ARCTIC TUNDRA ; PEACH-TREES ; FOREST ; FORMS ; PREFERENCES |
| Language | 英语 |
| Quartile | 1区 |
| Funding Project | State 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 | 是 |
| WOS Research Area | Agriculture ; Plant Sciences |
| WOS Subject | Agronomy ; Plant Sciences ; Soil Science |
| WOS ID | WOS:000430192000005 |
| Funding Organization | State 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 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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 Author | Wang, Xiaodan |
| Affiliation | 1.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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 10.1007%2Fs11104-017（1280KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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