Leaf nitrogen and phosphorus stoichiometry of plant communities in geochemically phosphorus-enriched soils in a subtropical mountainous region, SW China
文献类型：SCI/SSCI论文
| 作者 | Yan K.; Duan, C. Q.; Fu, D. G.; Li, J.; Wong, M. H. G.; Qian, L.; Tian, Y. X. |
| 发表日期 | 2015 |
| 关键词 | Species-specific responses Leaf inorganic phosphorus Leaf organic phosphorus Geochemically P-enriched soils (GEES) Central Yunnan n-p ratios functional-significance terrestrial ecosystems nutrient resorption patterns forests phytoremediation succession limitation worldwide |
| 英文摘要 | Leaf nitrogen (N) and phosphorus (P) stoichiometry might reflect the biogeochemical features of ecosystems, yet the potential range of stoichiometric flexibility under geochemically P-enriched soils (GPES) is still unclear. Leaf N and P of 126 plant species in 70 vegetation plots in GPES were investigated in central Yunnan, southwestern China, and leaf P fractions (i.e., inorganic vs. organic P) of the dominant species were examined. Our objectives were to improve the understanding of the role of soil N and P variability in controlling leaf N and P stoichiometry of plant communities in GPES. We found that plants in GPES had higher mean leaf P (4.07 mg/g) and lower N:P ratios (4.94) than average plant values that have been recorded in other parts of the world so far. Some fast-growing plants had extremely high leaf P (> 10 mg/g). Community leaf N and P contents increased as soil N availability increased, but soil N variability was unrelated to community leaf N:P. Instead, community leaf P and N:P ratios were primarily determined by soil P; as soil P availability increased, leaf P increased and leaf N:P significantly decreased. Greater accumulation of inorganic P relative to organic P in leaf was the direct driving factor for community leaf P and N:P ratio patterns in GPES. Although soil P availability was the main controlling factor of leaf N:P patterns, community composition could be manipulated to restore the balance of N and P stoichiometry based on the different responses across species and plant types. |
| 出处 | Environmental Earth Sciences |
| 卷 | 74 |
| 期 | 5 |
| 页 | 3867-3876 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1866-6280 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38971]  |
| 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 | Yan K.,Duan, C. Q.,Fu, D. G.,et al. Leaf nitrogen and phosphorus stoichiometry of plant communities in geochemically phosphorus-enriched soils in a subtropical mountainous region, SW China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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