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The Dinaric Mountains versus the Western Carpathians: Is structural heterogeneity similar in close-to-primeval Abies–Picea–Fagus forests?
European Journal of Forest Research ( IF 2.8 ) Pub Date : 2020-10-19 , DOI: 10.1007/s10342-020-01325-0
J. Paluch , S. Keren , Z. Govedar

In this study, we analysed patterns of spatial variation in the basal area of live and dead trees and structural complexity in close-to-primeval forests in the Dinaric Mts. The results were compared with an analogous study conducted in the Western Carpathians. The research was carried out in the Janj, Lom and Perucica forest reserves (Bosnia and Herzegovina) in mixed-species stands of silver fir Abies alba Mill., European beech Fagus sylvatica L. and Norway spruce Picea abies (L.) H. Karst. In the core zones of the reserves, concentric sample plots (154 and 708 m2) were set in a regular 20 × 20 m grid covering approximately 10 ha. The analyses revealed varying distribution patterns of live canopy trees, suggesting that these characteristics may fluctuate to some extent at the regional level. At the spatial scale of 708 m2, attractive associations between dead canopy trees were found, but this tendency disappeared with increasing area. Although stands in the Dinaric Mts. are characterized by an almost twofold greater biomass accumulation compared to those from the Western Carpathians, the study revealed analogous bell-shaped distributions of stand basal areas of live trees and a very similar trend of decreasing variation in stand basal area and structural heterogeneity with increasing spatial scale. Nonetheless, the higher growing stocks, lower ratios of dead to live tree basal area and lower proportion of homogeneous structure types found in the Dinaric Mts. may suggest a less severe disturbance history over recent decades in this region compared to the Western Carpathians.

中文翻译:

迪那利克山脉与西喀尔巴阡山脉:接近原始的冷杉-云杉-山毛榉森林的结构异质性是否相似?

在这项研究中,我们分析了 Dinaric Mts 中接近原始森林的活树和死树基底面积的空间变化模式和结构复杂性。结果与在西喀尔巴阡山脉进行的类似研究进行了比较。该研究在 Janj、Lom 和 Perucica 森林保护区(波斯尼亚和黑塞哥维那)的银冷杉 Abies alba Mill.、欧洲山毛榉 Fagus sylvatica L. 和挪威云杉 Picea abies (L.) H. Karst 的混合林中进行. 在保护区的核心区,同心样地(154 和 708 m2)被设置在一个规则的 20 × 20 m 网格中,覆盖约 10 公顷。分析揭示了活冠树的不同分布模式,表明这些特征可能在区域层面有所波动。在708平方米的空间尺度上,已经发现枯死的树冠之间存在着吸引人的联系,但这种趋势随着面积的增加而消失。虽然站在 Dinaric Mts。与西喀尔巴阡山脉相比,其特征是生物量积累几乎是西喀尔巴阡山脉的两倍,该研究揭示了活树的林分基底面积类似的钟形分布,并且随着空间的增加,林分基底面积和结构异质性的变化减少的趋势非常相似规模。尽管如此,在 Dinaric Mts 中发现的较高的生长蓄积量、较低的死树与活树基面积比率以及较低的均质结构类型比例。与西喀尔巴阡山脉相比,这可能表明该地区近几十年来的干扰历史较轻。虽然站在 Dinaric Mts。与西喀尔巴阡山脉相比,其特征是生物量积累几乎是西喀尔巴阡山脉的两倍,该研究揭示了活树的林分基底面积类似的钟形分布,并且随着空间的增加,林分基底面积和结构异质性的变化减少的趋势非常相似规模。尽管如此,在 Dinaric Mts 中发现的较高的生长蓄积量、较低的死树与活树基面积比率以及较低的均质结构类型比例。与西喀尔巴阡山脉相比,这可能表明该地区近几十年来的干扰历史较轻。虽然站在 Dinaric Mts。与西喀尔巴阡山脉相比,其特征是生物量积累几乎是西喀尔巴阡山脉的两倍,该研究揭示了活树的林分基底面积类似的钟形分布,并且随着空间的增加,林分基底面积和结构异质性的变化减少的趋势非常相似规模。尽管如此,在 Dinaric Mts 中发现的较高的生长蓄积量、较低的死树与活树基面积比率以及较低的均质结构类型比例。与西喀尔巴阡山脉相比,这可能表明该地区近几十年来的干扰历史较轻。该研究揭示了活树林分基面积的类似钟形分布,并且随着空间尺度的增加林分基面积和结构异质性的变化减少的趋势非常相似。尽管如此,在 Dinaric Mts 中发现的较高的生长蓄积量、较低的死树与活树基面积比率以及较低的均质结构类型比例。与西喀尔巴阡山脉相比,这可能表明该地区近几十年来的干扰历史较轻。该研究揭示了活树林分基面积的类似钟形分布,并且随着空间尺度的增加林分基面积和结构异质性的变化减少的趋势非常相似。尽管如此,在 Dinaric Mts 中发现的较高的生长蓄积量、较低的死树与活树基面积比率以及较低的均质结构类型比例。与西喀尔巴阡山脉相比,这可能表明该地区近几十年来的干扰历史较轻。
更新日期:2020-10-19
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