| 不同生长季节和地域对兴安落叶松单宁质量分数的影响 |
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| 引用本文： | 李雪莹,武永刚,王文杰,祖元刚.不同生长季节和地域对兴安落叶松单宁质量分数的影响[J].东北林业大学学报,2007,35(3):18-20. |
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| 作者姓名： | 李雪莹 武永刚 王文杰 祖元刚 |
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| 作者单位： | 山东中医药高等专科学校,莱阳,265200;东北林业大学 |
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| 摘 要： | 研究了兴安落叶松单宁质量分数季节动态变化及地理差异。结果表明:单宁质量分数随时间和地域环境(温度)的变化而变化,温度是其季节变化和地理差异的一个重要的影响因子。同一立地条件下,随生长期不同,兴安落叶松树皮、边材、针叶和树枝中单宁质量分数的季节动态模式相似。分别在冬季(1月)和秋季(9月)出现两次高峰;不同样地兴安落叶松树皮与针叶单宁质量分数明显不同,随着纬度的增加而有增加的趋势,并与年平均气温、极端最低温度呈明显的负相关。
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| 关 键 词： | 兴安落叶松 单宁 动态变化 温度 纬度 |
| 修稿时间： | 2006-06-27 |
Differences in Tannin Contents of Larix gmelini in Different Regions and Seasons |
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| Li Xueying,Wu Yonggang,Wang Wenjie,Zu Yuangang.Differences in Tannin Contents of Larix gmelini in Different Regions and Seasons[J].Journal of Northeast Forestry University,2007,35(3):18-20. |
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| Authors: | Li Xueying Wu Yonggang Wang Wenjie Zu Yuangang |
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| Institution: | 1. Shandong Polytechnic College of Chinese Medicine, Laiyang 265200, P. R. China;2.Northeast Forestry University |
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| Abstract: | An experiment was conducted to study the differences of tannin contents in Larix gmelini in different regions and seasons. Results show that tannin content varies with the change of time and clime, and temperature is an important influencing factor which results io a seasonal change and a regional difference in tannin contents. At the same clime, the differences of tannin contents in the bark, sapwood, needle, and branch!are similar in different seasons with a peak in January and a peak in September. Tannin content shows a significant difference in the bark and needle of L. gmelini from different climes, and it exhibits an increasing trend with latitude increasing. Tannin content has a significantly negative correlation with average temperature and extreme low temperature. |
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| Keywords: | Larix gmelini Tannins Dynamic changes Temperature Latitude |
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