【作者】 陈建名；

【导师】 郭明辉；

【作者基本信息】 东北林业大学 ， 木材科学与技术， 2012， 博士

【摘要】 本文以人工林杨木为研究对象,较为全面的研究了不同培育模式下人工林杨木材性径向变异对气候环境的响应。首先分析了不同培育模式下人工林杨木解剖特征和物理特征的各项指标的径向变异性及生长趋势,然后采用相关函数分析的方法,研究了不同培育模式下人工林杨木材性指标间的关联性。最后采用响应函数的分析方法,探讨培育模式与气候变化对人工林杨木解剖特征和物理特征的协同影响,为人工林杨木的定向培育提出建议。通过研究不同培育模式下人工林杨木解剖特征和物理特征各项指标的径向变异性得出：不同培育模式下其生长模式差异很大,特别是模式1(坡上,白浆土,间伐林分和4m×4m的初植密度)和模式5(平坡,草甸白浆土,未间伐林分和3m×3m的初植密度)。不同培育模式下的同一材性指标之间的变异有明显的区别,但是在同一培育模式下的许多材性指标之间,变异性相似或相近。通过分析不同培育模式下人工林杨木材材性指标间的关联性得出：无论是物理特征还是解剖特征,指标间的相关性比较高,一些指标几乎与其它指标都具有显著的相关性,具有代表性。物理特征主要是早材密度和晚材宽度,木纤维主要是早晚材的木纤维壁厚。有意思的是,对于导管来说,导管壁厚并不是直接指标,而是晚材的导管宽度和长度。通过探讨培育模式与气候变化对人工林杨木解剖特征和物理特征的协同影响得出：培育措施的人为干扰改变了气候因子对大青杨生长的影响。培育模式1对晚材宽度的影响很强烈,培育模式6对纤维壁厚的影响也很强烈,造成其相关变量受气候变化的影响很小。其它培育模式下的材性指标受气候的影响存在差异。大青杨生长主要是受生长季前期1月、2月最低地温、生长季5—7月平均气温、最高地温和相对湿度以及生长季后期的9、10月相对湿度的影响。不同的是,培育模式2下的早材密度主要受秋季气温的消极影响和6月相对湿度的积极影响。培育模式4下的纤维壁厚受相对湿度的影响,培育模式3下的晚材导管宽度受3月平均地温的积极影响,培育模式6下的晚材导管长度受2、3月份的最低地温影响强烈。本文的研究结果对指导人工林杨木进行定向培育具有一定的科学价值和实际意义。更多还原

【Abstract】 Focused on the study of the plantation ussuri poplar wood, this paper aims to indicate the responses of the radial variation of poplar wood property to the climate changes. Above all, the paper analyzes the radial variation indexes of anatomical and physical characteristics of the plantation ussuri poplar wood in different cultivated models. Then, by means of correlation analyses, the paper shows the relevance of different indexes of the plantation ussuri poplar wood property in different cultivated models. Finally, adopting the method of function analysis, the paper discusses the associated effect of cultivated models and climate changes on anatomical and physical characteristics so as to provide suggestions for oriented cultivation of the plantation ussuri poplar wood.Through the study of radial variation indexes of anatomical and physical characteristics of the plantation ussuri poplar wood in different cultivated models, we can draw the conclusion that there are great differences in different cultivated models, especially for model one.(Baijiang soil on slope, thinning, the primary planted density is4m×4m)and model five.(Baijiang soil on slope, thinning, the primary planted density is4m×4m). The radial variation indexes of the same wood property are of great differences in different cultivated models. However, in the same cultivated model, the indexes of wood properties are similar or similar in variation.Through analyzing the relevance of the indexes of the plantation ussuri poplar wood properties in different cultivated models, we conclude that the indexes are of high relevance, no matter physical characteristics or anatomical characteristics. What is more, some indexes and other indexes are apparently relevant and typical. The physical characteristics mainly refer to the density of early wood and the width of late wood. Wood fibers mean the thickness of fiber walls of early wood and late wood. It is interesting to found that for some vessels, thickness is not the right index, but the width and length of vessels are based on the study of the associated effect of cultivated models and climate changing on anatomical and physical characteristics of the plantation ussuri poplar wood, We can draw conclusion that human disturbance changes the effect of climate factors on the growth of the plantation ussuri poplar wood. In cultivated model one, it has an effect on late wood width intensively as well as an effect on fiber walls thickness in models six, which causes the result that the relevant variations have a little influence on climate changes. The indexes of wood property in the other cultivated models are of difference due to the influence of climate.The growth of the plantation ussuri poplar wood was deeply influenced by the lowest ground temperature of Jan. and Feb., the average temperature from May to July, and the relative humidity of Sep. and Nov. It is quite different that autumn temperature has negative effect on the density of early wood in cultivated model two, while the relative humidity has positive effect on it. In addition, in cultivated model four, the thickness of fiber walls is affected by relative humidity. In cultivated model three, the vessel width of late wood is positively affected by the average temperature in March. The vessel length of late wood is deeply affected by the lowest temperature in Feb. and Jan. in cultivated model six.With scientific value and practical significance, this paper is intended to provide basic instructions for oriented cultivation of the plantation ussuri poplar wood.更多还原