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以山东省枣庄市抱犊崮林场侧柏人工林为研究对象,采用典型抽样方法调查了特大雪灾后林木的受灾程度,探讨了坡向、海拔和林分结构特征对受灾程度的影响,以期为人工林雪灾预防提供理论依据。结果表明:侧柏林受灾程度极显著受到坡向和海拔的影响;从坡向看,阳坡受灾程度比阴坡严重;从海拔上看,阳坡高海拔地区比低海拔地区雪害情况严重,但阴坡不同海拔之间雪灾没有显著差异;从林分结构看,阳坡6~18 cm径阶的林木受损情况较严重,而阴坡不同胸径的林木受灾程度无显著差异。相关分析表明,受灾程度与树高呈显著负相关(除阴坡海拔296 m),但与其他林分结构指标的相关性随坡向和海拔的变化而变化。因此,立地条件与林分结构的共同作用是影响该地区侧柏林受灾的主要因素。
Taking the Platycladus orientalis plantation in Baodu ma farm in Zaozhuang city of Shandong Province as the research object, the typical sampling method was used to investigate the degree of damage to the forest after the super-heavy snow disaster and the influence of the slope, elevation and stand structure on the degree of disaster, Provide a theoretical basis for prevention of snow disaster in plantations. The results showed that the damage degree of Platycladus orientalis was significantly affected by the aspect and elevation. From the aspect of aspect, the degree of plague was more serious than that of the shady slope. From the altitude perspective, the condition of the snow hazard was more serious in the high altitude area than in the low altitude area There was no significant difference in snowstorm between different shades of the shady slopes. From the point of view of the stand structure, the trees damaged by the 6 ~ 18 cm diameter on the sunny slopes were seriously damaged. However, there was no significant difference in the severity of trees damaged by the shady slopes. Correlation analysis showed that there was a significant negative correlation between the degree of damage and the height of the tree (except for the elevation of 296 m on the shady slope), but the correlation with other stand structure indexes changed with the change of the slope and altitude. Therefore, the combined effect of site conditions and stand structure is the main factor that affects the affected area of Platycladus orientalis.