Morphostructural variability parameters of different age generations in pine (Pinus sylvestris L.) populations under constant excessive soil moisture in northern taiga of Arkhangelsk region

S. Tarkhanov, E. Pinaevskaya, A. S. Pakhov
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Abstract

The data is presented for studying the variability of morphostructural parameters of different age (g1 and g2) pine populations under conditions of constant excessive soil moisture of the northern taiga of the Arkhangelsk region. The frequency of occurrence distribution of the age and morphostructural parameters (size of the trunk and crown, self-pruning, length of coarse bark, size and number of side shoots, length and life span of needles) of trees is shown. It has been established that pine trees with smaller trunk and crown sizes, worse self-pruning are more common. Greater height and diameter of the trunk, length and diameter of the crown, better self-pruning, a greater length of the coarse bark is observed in the older generation (g2). This is due to the older age of the trees. It has been established that the relationship between the height of the trunk and the age of the trees is higher in the samples of young generative trees. It was revealed that the young generation (g1) has a significantly greater length and mass of cones, the length, width and height of the apophysis of seed scales compared to the older generation (g2).
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阿尔汉格尔斯克北部针叶林土壤水分持续过剩条件下不同年龄世代松树种群形态结构变异参数
本文研究了阿尔汉格尔斯克北部针叶林不同年龄(g1和g2)松树种群在持续土壤水分过高条件下形态结构参数的变异。显示了树木的年龄和形态结构参数(树干和树冠的大小、自修剪、粗皮的长度、侧芽的大小和数量、针叶的长度和寿命)的发生频率分布。已经确定,树干和树冠尺寸较小,自修剪能力较差的松树更为常见。树干的高度和直径更大,树冠的长度和直径更大,自修剪能力更好,在老一代中观察到更长的粗树皮(g2)。这是由于树木的年龄较大。已经确定,在幼树的样本中,树干高度与树木年龄之间的关系更高。结果表明,幼代(g1)球果的长度、质量、种鳞突的长度、宽度和高度均显著大于老代(g2)。
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