Management options for the conversion of allochthonous coniferous forest patches towards more natural species composition in the Vorpommersche Boddenlandschaft National Park, NE Germany

IF 0.7 4区农林科学 Q3 FORESTRY

Baltic Forestry Pub Date : 2021-03-09 DOI:10.46490/BF533

Alexander Seliger, S. Puffpaff, M. Manthey, J. Kreyling

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引用次数: 2

Abstract

The conversion of coniferous tree plantations towards natural self-regenerating forests is one of the targets of forestry in Europe and particularly desirable in national parks. The aim of this study was to evaluate the effectiveness of different conversion approaches (conducted once) on natural forest development in man-made spruce plantations. We studied the effects of three distinct management options (partial-cutting [PC], clear-cutting with timber removal [CC] and clear-cutting with timber remaining [CCr]) six years after application on tree regeneration (sapling identity, abundance, height, browsing intensity) and understorey species composition in former spruce plantations within the Vorpommersche Boddenlandschaft National Park in Northeastern Germany. An unmanaged spruce [M] and near-natural beech [N] stands were considered as local references. The sites differed significantly in tree regeneration and understorey species composition. The abundance of native tree saplings was highest at site CCr, their height did not differ among sites, while browsing intensity was most pronounced at site CC. Understorey species composition of all management options was equally dissimilar to site N. However, site CCr contained more species that are typically abundant in local beech forests. Clear-cutting of spruce plantations with dead wood remaining on site favoured the natural regeneration of native trees and understorey vegetation compared to clear-cutting with timber removal, partial-cutting and no management. Herbivore browsing detrimentally affected tree regeneration independent of the treatment. Clear-cutting with timber removal promoted the dominance of competitive herbaceous species that may hamper long-term forest regeneration. We conclude that progression of site CCr appears to proceed fastest towards natural forest conditions. Further long-term data is required to derive clear trends regarding time and direction of forest regeneration.

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德国东北部Vorpommersche Boddenlandschaft国家公园外来针叶林斑块向更自然物种组成转变的管理选择

将针叶树种植园转变为天然的自我再生森林是欧洲林业的目标之一，在国家公园尤为可取。本研究的目的是评估不同转换方法（一次）对人造云杉人工林天然林开发的有效性。我们研究了三种不同的管理方案（部分砍伐[PC]、砍伐并移除木材[CC]和砍伐并保留木材[CCr]）在应用六年后对年Vorpomersche Boddenlandschaft国家公园内前云杉种植园的树木再生（树苗特性、丰度、高度、浏览强度）和林下物种组成的影响德国东北部。未经管理的云杉[M]和接近天然的山毛榉[N]林被认为是当地参考。这些地点在树木再生和下层物种组成方面存在显著差异。本地树苗的丰度在CCr站点最高，它们的高度在站点之间没有差异，而浏览强度在CC站点最为明显。所有管理选项的底层物种组成与N站点同样不同。然而，CCr站点包含更多的物种，这些物种通常在当地山毛榉林中丰富。与清除木材、部分砍伐和不进行管理的砍伐相比，清除现场残留枯木的云杉种植园有利于原生树木和下层植被的自然再生。食草动物的觅食对树木的再生产生了不利影响，与处理无关。砍伐和木材移除促进了竞争性草本物种的主导地位，这可能会阻碍长期的森林再生。我们得出的结论是，在自然森林条件下，场地CCr的进展似乎最快。需要进一步的长期数据来得出关于森林再生时间和方向的明确趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Baltic Forestry 农林科学-林学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal welcomes the original articles as well as short reports, review papers on forestry and forest science throughout the Baltic Sea region and elsewhere in the area of boreal and temperate forests. The Baltic Sea region is rather unique through its intrinsic environment and distinguished geographical and social conditions. A temperate climate, transitional and continental, has influenced formation of the mixed coniferous and deciduous stands of high productivity and biological diversity. The forest science has been affected by the ideas from both the East and West. In 1995, Forest Research Institutes and Universities from Estonia, Latvia and Lithuania joined their efforts to publish BALTIC FORESTRY.