Stoichiometry of leaf nitrogen and phosphorus of grasslands of the Inner Mongolian and Qinghai-Tibet Plateaus in relation to climatic variables and vegetation organization levels
文献类型：SCI/SSCI论文
| 作者 | Fan J. W.; Harris, W.; Zhong, H. P. |
| 发表日期 | 2016 |
| 关键词 | Nitrogen Phosphorus Stoichiometry Climatic variable Vegetation organization level carbon china nitrification limitation succession nutrients secondary patterns transect biomass |
| 英文摘要 | Nitrogen (N) and phosphorus (P) are most commonly the limiting essential elements that affect the functioning of plants and ecosystems. However, their stoichiometry in relation to climatic variables and vegetation organization levels has not been comprehensively characterized. N and P concentrations were measured for 329 leaf samples collected at 132 sites along the 5000 km long China Grassland Transect that traverses the Inner Mongolian and Qinghai-Tibet Plateaus. The patterns of these measurements were analyzed with reference to climate factors, plant species, plant functional groups, grassland communities and grassland ecosystems. The aim was to explore whether geographical patterns of plant leaf elements are related to zonal climatic variables, and at which vegetation organization levels changes of plant leaf N and P stoichiometric characteristics and pattern occur. Results showed that interspecific differences of N and P concentrations were most significant for the three vegetation organization levels of species, community and ecosystem. Plant leaf N and P concentrations were higher, coefficients of variation of N and P lower, and N/P, C/N and C/P ratios were also lower for leaf samples from the cold high altitude Qinghai-Tibet Plateau than for those from the relatively lower altitude and warmer Inner Mongolian Plateau. Correlation of N and P for Inner Mongolian grassland was higher than that for the Qinghai-Tibet Plateau. The study indicates plant species are the most basic unit influencing plant stoichiometric geographic patterns, and that climatic variables affect leaf element concentrations mainly through their effect on changes of plant species composition of vegetation. |
| 出处 | Ecological Research |
| 卷 | 31 |
| 期 | 6 |
| 页 | 821-829 |
| 语种 | 英语 |
| ISSN号 | 0912-3814 |
| DOI标识 | 10.1007/s11284-016-1392-5 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/42925]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Fan J. W.,Harris, W.,Zhong, H. P.. Stoichiometry of leaf nitrogen and phosphorus of grasslands of the Inner Mongolian and Qinghai-Tibet Plateaus in relation to climatic variables and vegetation organization levels. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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