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首页> 外文期刊>South-East European Forestry >Structural Elements and Morphological Characteristics of Pedunculate Oak (Quercus robur L.) in Young Even-Aged Stands of Spa?va Forest
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Structural Elements and Morphological Characteristics of Pedunculate Oak (Quercus robur L.) in Young Even-Aged Stands of Spa?va Forest

机译：斯瓦伐瓦森林幼龄幼林有花梗栎的结构元素和形态特征

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Background and Purpose: Croatian Forest Research Institute and Croatian Forests Ltd., Zagreb, have in 2010 jointly proposed a scientific experiment on permanent experimental plots called “The Impact of the Intensity of Silvicultural Tending on Pedunculate Oak Dieback”. The basis for setting up experimental plots were the results of the analysis of surface structure of pedunculate oak (Quercus robur L.) stands of Spa?va Forest and its projection area for the next 140 years, and the related issues of regeneration of old and tending of young stands in conditions of increasing climate change. In the future this will present a major problem for forestry practice in silvicultural operations, both in terms of workers and materials. Materials and Methods: The experiment was conducted in the area of Forest Administration Vinkovci, Forest Office Vinkovci, Management Unit Kunjevci, in three subcompartments of different age (10, 15 and 20 years) where different intensities tending operations of cleaning were conducted. A total of 20 plots were established by using the already established network of silvicultural lines and paths, while the position was recorded by a GPS device. On each plot 30 pedunculate oak trees were permanently marked (600 trees in total). Tree selection was based on spatial and phenotypic criteria. Results: The initial measurement on permanent experimental plots shows unsatisfactory number of pedunculate oak trees along with the high number of common hornbeam trees. The overall basal area has a tendency of continuous growth in relation to the age of experimental plots. The value of crown length in relation to the total height of pedunculate oak trees is 74.3% in subcompartment 32A, 53.5% in subcompartment 34 A, and 54.3% in subcompartment 38A. Trunk length, i.e. trunk purity also increases with age; in subcompartment 32A on average it amounts to 1.35 m, in subcompartment 34A to 3.28 m and in subcompartment 38A to 4.85 m. Conclusion: After conducting periodic surveys of the established plots by the year 2020 enough data should be collected whose processing, analysis and interpretation would provide guidelines for improving the future management of young pedunculate oak stands.
机译：背景和目的：克罗地亚森林研究所和萨格勒布的克罗地亚森林有限公司于2010年联合提出了一项针对永久性试验区的科学实验，称为“造林趋势对带花梗橡树Dieback的影响”。设置实验区的基础是分析Spa？va森林的有花梗橡木（Quercus robur L.）林分的表层结构及其未来140年的投影区域的结果，以及有关旧木和老木再生的相关问题。在气候变化加剧的情况下抚育幼林。将来，这将对造林业中的林业实践提出一个主要问题，无论是在工人还是在材料上。材料和方法：实验在三个不同年龄（10、15和20岁）的小室中进行，它们分别是森林管理局Vinkovci，森林办公室Vinkovci，管理部门Kunjevci，并进行了不同强度的清洁操作。使用已经建立的造林线和路径网络，总共建立了20个地块，而位置则由GPS设备记录。在每个地块上，永久标记30棵有花梗的橡树（总计600棵树）。树的选择基于空间和表型标准。结果：在永久性实验地块上的初始测量结果显示，带花​​梗的橡树数量不令人满意，而常见的角树数量却很高。总的基础面积相对于实验地块的年龄有持续增长的趋势。相对于有花梗的橡树的总高度，树冠长度的值在小室32A中为74.3％，在小室34A中为53.5％，在小室38A中为54.3％。树干的长度，即树干的纯度也随着年龄的增长而增加;在子隔间32A中平均为1.35m，在子隔间34A中平均为3.28m，在子隔室38A中平均为4.85m。结论：到2020年对已建立的地块进行定期调查后，应收集足够的数据，其处理，分析和解释将为改善未来有蒂花梗橡木林的管理提供指导。

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