Effect of forwarder multipassing on forest soil parameters changes

IF 1.5 4区 农林科学 Q2 FORESTRY Iforest - Biogeosciences and Forestry Pub Date : 2022-12-31 DOI:10.3832/ifor4138-015
Z. Pandur, H. Kopseak, M. Šušnjar, M. Landekić, M. Sporcic, M. Bačić
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引用次数: 1

Abstract

In the lowland part of Croatia, heavy machinery such as forwarders is mainly used for the purpose of extracting wood from even-aged forest stands. According to the forest management plan, forwarders are used intensively in the winter period when the soil is mostly saturated with water and when their activity can cause significant damage to the soil. The aim of this study was to determine changes in soil characteristics as a consequence of the repeated passage of a loaded 8-wheel forwarder on silty clay loam type of soil. The research was conducted in an area where the forwarder usually works and in a way that did not significantly disrupt his normal workflow. The results indicate that during the study period the soil had a good bearing capacity and that the observed changes in soil characteristics (bulk density, total soil porosity, soil moisture, particle density, soil water retention capacity etc.) occurred as a result of breaking structural soil aggregates after soil compaction by multiple passes. Characteristic points ( T ) of equalized penetration curves indicate the compaction of the soil surface layer. Cone penetration index ( CI ) values did not show a proportional increase as the number of forwarder passes increased, although significant differences in their values with respect to the number of passes were found. Shear strength ( τ ) did not significantly increase with increasing the number of passes, but a statistically significant difference in the measured values was detected at the soil surface, which was not observed at a depth of 15 cm. Exceeding the rut depth limit of 10 cm occurred only after the 20 th pass. Our results indicate that the soil at the harvesting site had a good bearing capacity during the study period.
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货代多重传递对森林土壤参数变化的影响
在克罗地亚的低地地区,诸如转运机之类的重型机械主要用于从平均年龄的林分中提取木材。根据森林管理计划,在冬季,当土壤大部分被水饱和时,当它们的活动可能对土壤造成重大损害时,它们被大量使用。本研究的目的是确定土壤特征的变化,作为一个加载8轮货代在粉质粘土壤土类型的土壤上反复通过的结果。这项研究是在货代通常工作的地方进行的,并且以一种不会明显扰乱他正常工作流程的方式进行的。结果表明,研究期间土壤具有良好的承载能力,土壤特性(容重、总孔隙度、土壤水分、颗粒密度、土壤保水能力等)的变化是由于土壤多次压实后结构团聚体破碎所致。等渗曲线特征点(T)表示土壤表层的压实程度。锥突指数(CI)值并没有随着传球次数的增加而呈比例增加,尽管它们的值与传球次数有显著差异。抗剪强度(τ)不随穿越次数的增加而显著增加,但在土壤表面检测到具有统计学意义的差异,而在深度为15 cm时则没有观察到这种差异。超过车辙深度10 cm的情况只发生在第20次车辙后。结果表明,采伐地土壤在研究期间具有良好的承载力。
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来源期刊
CiteScore
3.30
自引率
0.00%
发文量
54
审稿时长
6 months
期刊介绍: The journal encompasses a broad range of research aspects concerning forest science: forest ecology, biodiversity/genetics and ecophysiology, silviculture, forest inventory and planning, forest protection and monitoring, forest harvesting, landscape ecology, forest history, wood technology.
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