乌克兰平原橡树林及其自然再生

Q4 Agricultural and Biological Sciences
V. Tkach, M. Rumiantsev, Oleksii Kobets, V. Luk’yanets, S. Musienko
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引用次数: 7

摘要

基于2001年和2016年的森林管理数据(分区数据库),分析了乌克兰平原地区六个行政区域内橡树林面积和蓄积量的变化。研究区域在地理上与乌克兰左岸森林草原区有关(基辅、波尔塔瓦、苏米、哈尔科夫、切尔卡西和切尔尼耶夫地区)。分析的面积超过28.4万公顷。本文概述了橡树林的现状,以及它们的起源(植物、天然种子和种植种子)。林分赋税指数的确定方法是将样地按年龄分组,并进一步聚类为4个年龄组。利用10 m2 (R = 178 cm)圆形计算地块对栎树林冠下的自然再生进行了计算和估算。57%的栎林以营养(矮)林为主。种植的种子橡树林占地101,000公顷,占总面积(284,000公顷)的36%。天然种子原产林分占7%。从2001年到2016年,研究区栎林总面积减少了近7000公顷。通过对文献资料的分析,确定了对有花序栎树自然再生的出现、宜居性和生长影响最大的许多因素。只有20%的栎林被发现有足够数量的栎树再生。为了实施可持续森林管理,应以优化橡树林的树龄结构和从种子中培育天然林为目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ukrainian plain oak forests and their natural regeneration
Changes in the areas and stock volumes of oak stands were analyzed within the six administrative regions in the plain area of Ukraine, based on forest management data (subcompartment database) as of 2001 and 2016. The studied regions geographically related to the Left-bank Forest-Steppe zone of Ukraine (Kyiv, Poltava, Sumy, Kharkiv, Cherkasy and Chernihiv Regions). The analyzed area was over 284,000 hectares. The paper outlines the present state of the oak stands, concerning their origin (vegetative, natural seed and planted seed stands). Forestry-taxation indices of the stands were determined by grouping the plots according to age and further clustering in four age groups. The natural regeneration under a canopy in oak stands was accounted and estimated using circular 10 m2 (R = 178 cm) accounting plots. The oak forests were found to be dominated by stands of vegetative (coppice) origin (57%). Planted seed-origin oak stands covered 101,000 ha or 36% of the total area (284,000 ha). Stands of natural seed origin amounted to 7%. From 2001 to 2016, the total area of oak forests in the study region decreased by nearly 7,000 hectares. The analysis of literature sources allowed identifying numerous factors, which have the greatest influence on the emergence, liveability, and growth of natural regeneration of pedunculated oak. Only 20% of the investigated oak stands were found to have a sufficient amount of oak regeneration. For the implementation of sustainable forest management, activities should be aimed at optimizing the age structure of oak forests and growing natural forests from seeds.
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来源期刊
Forestry Studies
Forestry Studies Agricultural and Biological Sciences-Forestry
CiteScore
0.70
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