Postfire tree mortality and fire resistance patterns in pine forests of Ukraine

IF 1.4 Q2 FORESTRY

Central European Forestry Journal Pub Date : 2021-03-01 DOI:10.2478/forj-2020-0029

S. Sydorenko, V. Voron, I. Koval, S. Sydorenko, M. Rumiantsev, R. Hurzhii

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引用次数: 6

Abstract

Abstract The study was conducted in pure Scots pine (Pinus sylvestris L.) stands within the forest steppe physiographic region of Ukraine damaged by surface fires with different intensity. The aim of the research is to determine the effect of different fire intensity on pine stand and individual trees, considering tree morphometric parameters and type of damage. The intensity and duration of fire-related tree mortality was different in stands with different age. We found that tree fire resistance is driven by tree diameter, height of the rough bark, and natural degree of thickness. The proportion of dead trees one year after the spring fires in the middle-aged pine stands was 5 times lower and in mature pine stands even 10 times lower than after the summer fires. The critical damage to tree crowns in young pine trees causing their death is 80% of the needles burned. In the middle-aged pine trees, critical damage depended on the size of trees. The death of large, mature trees after smoldering summer fires was associated with the accumulation of a large stock of forest litter and duff near the tree-base, which contributed to the increased intensity of fire and its localization near the base part of the trees. Based on our findings, postfire tree mortality models have been developed for different age groups of pine stands.

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乌克兰松林火灾后树木死亡率和耐火模式

摘要以乌克兰森林草原自然地理区域内遭受不同强度地表火灾破坏的纯苏格兰松(Pinus sylvestris L.)为研究对象。研究的目的是在考虑树木形态参数和损害类型的情况下，确定不同火灾强度对松树林分和单株的影响。不同林龄的林分，火灾相关树木死亡的强度和持续时间不同。我们发现树木的耐火性是由树径、粗糙树皮的高度和自然厚度决定的。春火后1年中年松林死树比例比夏火后低5倍，成熟松林死树比例甚至低10倍。对幼松树冠造成的致命伤害是针叶烧伤的80%。在中年松树中，临界损害取决于树木的大小。夏季阴燃火灾发生后，大型成熟树木的死亡与树木基部附近大量凋落物和枯草的积累有关，这有助于火灾强度的增加及其在树木基部附近的局部化。基于我们的研究结果，针对不同年龄组的松树林建立了火灾后树木死亡率模型。

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

Central European Forestry Journal FORESTRY-

CiteScore

3.20

自引率

6.20%

发文量

审稿时长

22 weeks

期刊介绍： Central European Forestry Journal (published as Lesnícky Èasopis - Forestry Journal until 2016) publishes novel science originating from research in forestry and related braches. Central European Forestry Journal is a professional peer-reviewed scientific journal published 4-time a year. The journal contains original papers and review papers of basic and applied research from all fields of forestry and related disciplines. The editorial office accepts the manuscripts within the focus of the journal exclusively in English language. The journal does not have article processing charges (APCs) nor article submission charges. Central European Forestry Journal, abbreviation: Cent. Eur. For. J., publishes original papers and review papers of basic and applied research from all fields of forestry and related scientific areas. The journal focuses on forestry issues relevant for Europe, primarily Central European regions. Original works and review papers can be submitted only in English language.