| 摘要: |
| 为了解珍贵树种在环境适应中的资源获取与生长策略，对巴里黄檀 Dalbergia bariensis、交趾黄檀 Dalbergia cochinchinensis、降香黄檀 Dalbergia odorifera、大果紫檀 Pterocarpus macrocarpus、檀香紫檀 Pterocarpus santalinus 叶、茎、根中 C、N、P 化学计量特征进行分析。结果显示，（1）5 种黄檀族树种叶片有机物含量在中国地区处于平均水平，叶片具有高 N 低 P 的养分特征，其中交趾黄檀可能是一种潜在的高碳汇树种；（2）黄檀族树种的 C 元素主要储藏在茎中，N、P 元素的分配则趋向叶片；（3）黄檀族树种具有较低养分利用效率和较高生长速率，生长过程主要受土壤 P 元素限制；（4）生态化学计量比变异分析中，C 元素的变异系数最小。 |
| 关键词: 黄檀族 5 种珍贵树种 碳 氮 磷 化学计量 |
| DOI： |
| 投稿时间：2021-11-18修订日期：2022-03-07 |
| 基金项目:海南热带天然林碳汇计量监测与热带人工林营造技术研究（CAFYBB2018MB014）。 |
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| Carbon, Nitrogen, and Phosphorush Stoichiometry of Leaves, Stems and Roots with Five Rosewood Species of Dalbergieae |
| Zhaokunkun,Xuhan,Shiguozheng,Zhangxiaofeng,Yangfan,Chenrenli |
| (The Experimental Station of Research Institute of Tropical Forestry, Chinese Academy of Forestry;Hainan Academy of Forestry( Hainan Academy of Mangrove)) |
| Abstract: |
| Ecological stoichiometry is widely used as an indicator of the obtain resources and growth strategy of plants. This paper analyzed the carbon (C), nitrogen (N), and phosphorus (P) stoichiometry in leaves, stems and roots of Dalbergia bariensis, Dalbergia cochinchinensis, Dalbergia odorifera, Pterocarpus macrocarpus and Pterocarpus santalinus. Our results showed that: (1) the organic matter content in leaves of Dalbergieae was at a moderate level in China and the leaves had a nutrient characteristics of high nitrogen and low phosphorus. The Dalbergia cochinchinensis may have high carbon sink capacity. (2) The stem of Dalbergieae had highest carbon content, and the nitrogen and phosphorus contents in leaves were significantly higher than those in stems and roots. (3) The five rosewood species had lower nutrient use efficiency, higher growth rate, and the growth was mainly limited by phosphorus in soil. (4) Coefficient variation of ecological stoichiometry showed that the value of carbon content was smallest among all plants. The results of this study can provide a theoretical basis for the scientific cultivation, planting planning and sustainable management of valuable tree species plantation. |
| Key words: Dalbergieae five rosewood species C N P stoichiometry |
