| 湘西野生巨紫荆树干解析 |
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| 引用本文： | 和红晓,易烜,仝奇峰,钟少伟,黄瑞春.湘西野生巨紫荆树干解析[J].湖南林业科技,2021,48(1):32-36. |
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| 作者姓名： | 和红晓 易烜 仝奇峰 钟少伟 黄瑞春 |
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| 作者单位： | 湘西自治州林业局,湖南 吉首 416000;青羊湖国有林场,湖南 宁乡 410600;湘西高新区不动产登记中心,湖南 吉首 416000;湘西自治州林业科学研究所,湖南 吉首 416000 |
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| 基金项目： | 湖南省林业科技创新专项“珍稀乡土植物巨紫荆高效繁育及种质创新关键技术研究”(XLK202002)。 |
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| 摘 要： | 本文运用树干解析的方法,研究了自然生长条件下湘西巨紫荆树高、胸径、材积、生长率和胸高形数的生长变化规律,结果表明:随着树龄的增长,巨紫荆树高、胸径、材积的总生长量逐步增加,20 a还未达到最大值;树高连年生长量和平均生长量在树龄15 a前都呈现出上升趋势,15 a后逐渐下降;胸径总生长量在20 a前随着树龄的增加几乎呈...
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| 关 键 词： | 巨紫荆 树干解析 生长量 形数 湘西 |
Trunk analysis of wild Cercis gigantea in western Hunan |
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| HE Hongxiao,YI Xuan,TONG Qifeng,ZHONG Shaowei,HUANG Ruichun.Trunk analysis of wild Cercis gigantea in western Hunan[J].Hunan Forestry Science & Technology,2021,48(1):32-36. |
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| Authors: | HE Hongxiao YI Xuan TONG Qifeng ZHONG Shaowei HUANG Ruichun |
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| Institution: | (Forestry Bureau of Xiangxi Municipality,Jishou 416000,Hunan,China;Qingyang Lake State-owned Forest Farm,Ningxiang 410600,Hunan,China;Gaoxin District Budongchan Registration Center of Xiangxi,Jishou 416000,Hunan,China;Prefecture Forestry Science Institute of Xiangxi Municipality,Jishou 416000,Hunan,China) |
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| Abstract: | The variation under natural growth of Cercis gigantea tree height,DBH,volume,growth rate and number of breast height were studied condition by trunk analysis method.The total growth of DBH,tree height and volume increased gradually with the increase of tree age,which was still increased after 20 years.The annual and average growth of tree height showed an upward trend before the age of 15 years,and began to decline after 15 years.The total growth of DBH was increased almost linearly with the increase of tree age before 20 years with high growth rate.The average growth amount of DBH and annual growth amount was turned to decrease after 18 years,reaching the maximum value of 1.08 cm and 1.37 cm,respectively.The total volume growth was increased every year,and the annual growth was decreased gradually after reaching the maximum value of 0.017 m3 at 18th year,which were both higher than the average growth.Therefore,Cercis gigantea could be a fast growing tree species. |
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| Keywords: | Cercis gigantea trunk resolution growth shape number western Hunan |
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