Changes of ground vegetation after shelter wood cuttings in pine forests, the hemiboreal zone, Lithuania

IF 0.7 4区农林科学 Q3 FORESTRY

Baltic Forestry Pub Date : 2021-02-15 DOI:10.46490/BF154

V. Marozas, J. Sasnauskienė

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引用次数: 2

Abstract

Sustainable forestry plays an important role in applying forest management measures. In many forests, management is oriented towards closer natural forest processes. Silvicultural systems that retain some part of the trees in the stand, such as shelter wood cuttings have been introduced. The aim of the study was to evaluate the early changes of ground vegetation after shelter wood cuttings in sites of different soil fertility gradient in pine dominated stands on sandy soils in the European hemiboreal zone. The Scots pine stands in which first step of shelter wood cuttings was applied were investigated. The stands were selected in fresh (normal humidity) sites according to soil fertility gradient: very poor, poor and medium fertility soils. All mosses, lichens, herbaceous vegetation and dwarf shrubs were recorded, and projection cover was estimated in June - August. Ellenberg’s indicator figures were used to evaluate site conditions. In shelter wood cuttings (5-6-year-old) the number of species was higher in medium fertile sites than in very poor sites. After shelter wood cuttings the abundance of herbaceous species increased in all sites, while the abundance of mosses and lichens decreased. Within the first year after shelter wood cuttings, the abundance of Ericaceae species decreased, and abundance of Rosaceae and Poaceae species increased. Average Ellenberg’s indicator values showed that site conditions changed after shelter wood cuttings. The changes were more intensive in medium fertile sites than in poor sites. After shelter wood cuttings the richness and abundance of ground vegetation changed. The intensity of change differed in sites of certain soil fertility and was caused by alteration of site conditions, which were more homogenous in sites of the certain fertility in uncut stands than in cuttings. Key words: herbs, mosses, non-clear cuttings, vegetation

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立陶宛半北方带松林遮蔽插枝后地面植被的变化

可持续林业在实施森林管理措施方面发挥着重要作用。在许多森林中，管理面向更紧密的自然森林进程。引入了将部分树木保留在林分中的造林系统，如遮蔽木插条。本研究的目的是评估欧洲半北方带沙质土壤上以松树为主的林分在不同土壤肥力梯度的地点遮蔽木材后地面植被的早期变化。对苏格兰松林进行了第一步防护插条的调查。林分根据土壤肥力梯度选择在新鲜（正常湿度）的场地：非常贫瘠、贫瘠和中等肥力的土壤。记录了所有苔藓、地衣、草本植被和矮生灌木，并估计了6月至8月的投影覆盖率。Ellenberg的指标数字用于评估现场条件。在遮荫处（5-6岁），中等肥沃地区的物种数量高于非常贫瘠的地区。遮荫后，所有地点的草本物种丰度都有所增加，而苔藓和地衣的丰度则有所下降。在遮荫后的第一年内，Ericceae物种的丰度下降，Rosaceae和Poaceae物种的丰度增加。艾伦伯格的平均指标值表明，遮蔽木材切割后，场地条件发生了变化。这种变化在中等肥沃的土地上比在贫瘠的土地上更为强烈。遮荫后，地面植被的丰富度和丰富度发生了变化。变化的强度在具有一定土壤肥力的地点不同，是由地点条件的改变引起的，在具有一定肥力的地点，未修剪的林分比插条更均匀。关键词：草本植物、苔藓、非透明插条、植被

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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.