Growth rule for a 46-year-old Dalbergia odorifera in Nanning, Guangxi
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摘要: 针对广西南宁良凤江树木园内46年生降香黄檀Dalbergia odorifera人工林生长规律进行研究,通过进行树干解析的方法阐述这一珍贵红木树种的生长规律。结果表明:46年生降香黄檀平均树高、胸径、去皮单株材积分别为18.70 m,21.6 cm和0.401 9 m3株-1。降香黄檀的树高连年生长量呈现明显的高低高规律,幼苗期其高增长较快,至35年生之后呈现较稳定的树高生长趋势并最终达到18.70 m。降香黄檀的胸径生长在46年生的生长期中出现2次较明显的稳定期,分别是14~28年生及32~46年生。在材积生长量方面,降香黄檀的材积生长在珍贵阔叶树中处于中上水平。降香黄檀在8年生前后开始出现心材,46年生时心材直径平均值为10.8 cm。图5表2参18Abstract: To protect a precious redwood tree, Dalbergia odorifera, this study determined the growth rule for a 46-year-old D. odorifera from Liang Fengjiang Garden in Nanning, Guangxi. Results showed an average tree height of 18.7 m, DBH of 21.6 cm, and volume of 0.401 9 m3tree-1. Tree height followed an annual increment pattern of highlowhigh from the seedling stage to 35 years of age. Afterward a relatively stable growth in tree height occurred. DBH growth had two relatively obvious plateaus from years 14-28 and 32-46. Volume growth was high for a precious hardwood with heartwood in the most recent 8 years averaging a diameter of 10.8 cm. [Ch, 5 fig. 2 tab. 18 ref.]
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Key words:
- silviculture /
- Dalbergia odorifera /
- growth rule /
- redwood /
- heartwood
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.04.005
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