四眼冷杉树皮甲虫入侵下的西伯利亚冷杉(Abies sibirica Ledeb.)森林的自然更新

Q4 Agricultural and Biological Sciences
N. Debkov
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引用次数: 5

摘要

摘要以西伯利亚冷杉(Abies sibirica Ledeb.)为主要树种,因四眼冷杉树皮甲虫(Polygraphus proximus Blandf.)入侵而遭到破坏的西伯利亚西部森林为研究对象,对其自然更新潜力进行了评价。研究这一问题的主要方法是样地法和样带法,它们可以揭示自然保护区的特征、形态结构和空间分布。通过对林分发生和结构的分析,揭示了林分损害程度与树苗状态之间的相关关系。其空间结构具有高度的异质性,证明了NR的群体位置和密度的变化。在63%的样地中,由于四眼南冷杉树皮甲虫的影响,树苗数量减少。死亡树苗以大树苗居多(95%),死亡树苗占10 ~ 50%。树苗的减少与杉木林的状态呈显著正相关。树苗数量在1233 ~ 19200株/ m2之间,以冷杉为优势种。西伯利亚西部的冷杉森林,被四眼冷杉树皮甲虫破坏,有再生的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Natural regeneration in Siberian fir (Abies sibirica Ledeb.) forests subjected to invasion of the four-eyed fir bark beetle (Polygraphus proximus Blandf.)
Abstract This study assessed the potential of natural regeneration (NR) of forests in Western Siberia, dominated by Siberian fir (Abies sibirica Ledeb.) and damaged due to the invasion of the four-eyed fir bark beetle (Polygraphus proximus Blandf.). The leading methods for investigating this problem are the sample plot method and the transect method, which allow revealing the features of NR, their morphological structure and spatial distribution. Analysis of the occurrence and structure of NR revealed a correlation between the degree of stand damage and sapling state. The spatial structure was highly heterogeneous, testifying the group location of NR and the variable density. For 63% of the sample plots, a decrease in saplings was recorded as a result of the impact of the four-eysouthern ed fir bark beetle. Most of the dead saplings were large (95%), and dead saplings accounted for 10–50%. A positive correlation was found between the decrease in saplings and the state of the fir forest. The number of saplings varied from 1,233 to 19,200 plants ha−1, with fir being the dominant species. Fir forests of Western Siberia, damaged by the four-eyed fir bark beetle, have the potential for regeneration.
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来源期刊
Forestry Studies
Forestry Studies Agricultural and Biological Sciences-Forestry
CiteScore
0.70
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