Nitrogen uptake pattern of herbaceous plants: coping strategies in altered neighbor species | |
Hong, Jiangtao1; Ma, Xingxing2; Zhang, Xiaoke3; Wang, Xiaodan1 | |
刊名 | BIOLOGY AND FERTILITY OF SOILS |
2017-10-01 | |
卷号 | 53期号:7页码:729-735 |
关键词 | Nitrogen Uptake Nitrogen Forms Neighbor Removals Niche Complementarity Species Coexistence |
ISSN号 | 0178-2762 |
DOI | 10.1007/s00374-017-1230-0 |
通讯作者 | Xiaodan Wang |
英文摘要 | The mechanisms for maintaining the species diversity of plant communities under conditions of resource limitation is an important subject in ecology. How interspecific relationships influence the pattern of nutrient absorption by coexisting species in N-limited ecosystems is still disputed. We investigated the effect of neighbor species on the uptake of inorganic and organic N by three common plant species using N-15 tracer techniques in a semi-arid alpine steppe on the northern Tibet. The results showed that the plant species varied in their capacity to absorb NO3 (-)-N, NH4 (+)-N, and glycine-N with or without neighbor species. Carex moorcroftii and Leontopodium nanum showed much more plasticity in resource utilization than Stipa purpurea when neighbor species were present. When C. moorcroftii and S. purpurea coexisted, they all increased their N-15 uptake for the NO3 (-)-N (C. moorcroftii 2.2-fold increase and S. purpurea 2.2-fold increase) and glycine-N treatments (C. moorcroftii 2.9-fold increase and S. purpurea 3.4-fold increase), which indicated that neighborhood had a positive effect for N absorption between the two species. However, L. nanum was a less effective competitor for N utilization than the neighbor species across almost all treatments. The dominant species appeared to have an inhibitory effect on N absorption by the accompanying species in this alpine steppe environment. Thus, interspecific neighbor pairs may result in both a mutually beneficial cooperative relationship and a competitive relationship among neighbors in resource use patterns in extreme environments. Resource use plasticity in altered neighbor species may be due to phenotypic plasticity based on the conditions of the realized niche, offering a valuable insight into niche complementarity and providing a general and important mechanism for resource partitioning in an alpine area. |
语种 | 英语 |
WOS记录号 | WOS:000409909300003 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/19111] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Sichuan, 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 |
推荐引用方式 GB/T 7714 | Hong, Jiangtao,Ma, Xingxing,Zhang, Xiaoke,et al. Nitrogen uptake pattern of herbaceous plants: coping strategies in altered neighbor species[J]. BIOLOGY AND FERTILITY OF SOILS,2017,53(7):729-735. |
APA | Hong, Jiangtao,Ma, Xingxing,Zhang, Xiaoke,&Wang, Xiaodan.(2017).Nitrogen uptake pattern of herbaceous plants: coping strategies in altered neighbor species.BIOLOGY AND FERTILITY OF SOILS,53(7),729-735. |
MLA | Hong, Jiangtao,et al."Nitrogen uptake pattern of herbaceous plants: coping strategies in altered neighbor species".BIOLOGY AND FERTILITY OF SOILS 53.7(2017):729-735. |
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