Distribution of English Oak (Quercus robur L.) and Norway Maple (Acer platanoides L.) with Height in a Shelterbelt
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2020, Vol 9, Issue 6
Abstract
The organizing framework of adaptive landscape agriculture is protective afforestation. The study of the shelterbelt state is necessary for detection of their protective height due to the dramatically changing climatic conditions. The research purpose is to carry out the distribution of trees of English oak (Quercus robur L.) and Norway maple (Acer platanoides L.) with height for the stand structure evaluation, as well as to propose the measures for the condition improvement of English oak. The shelterbelt, the spatial structure of which was studied, is located in the vicinity of the village of Zolotarevka (65 km from the city of Lugansk). Archival data on the creation time and age of the studied forest shelterbelt were not revealed. Shelterbelts in the Lugansk region were created in accordance with the “Great Plan for the Transformation of Nature”, which was designed for 1949–1965. Sampling areas were laid out in accordance with the industrial standard OST 56-69–83. The composition of the shelterbelt, the diameter and average height of the trees were determined based on the results of enumerative valuation. The coefficients of skewness and kurtosis of stands of the studied species were calculated by the standard methods of biometrics. The distribution of Norway maple and English oak trees with height was checked with the normal distribution of trees in the plantation according to the Shapiro-Wilk test. The authors revealed that arithmetic and valuation mean heights of the stands of English oak and Norway maple on two permanent sampling areas differ slightly. It was found that the stand of Norway maple on the first and second sampling areas is characterized by positive right-side symmetry and positive kurtosis. Analyzing the stand condition, it is arguable that the coefficient of skewness of the English Oak stand on both areas is not the same in sign and numerical value: on the first sampling area – leftside negative (As = –2.026) and on the second – right-side positive (As = 0.973). The authors pay particular attention to the fact that the value of the coefficient of kurtosis of the English Oak stands is the highest on the first sampling area – 3.044. On the basis of the ShapiroWilk test it is shown that the curve of distribution of the Norway maple stands with height on the first and second sampling areas does not correspond to the normal distribution curve for the plantations. While the curve of distribution of the English Oak stands with height on the second sampling area is close to the indicator of the Shapiro-Wilk test for normal stands and is 0.823 (for p = 0.05, W = 0.842, n = 10).
Authors and Affiliations
O. V. Gribacheva, A. I. Chernodubov
Keywords
Related Articles
- EP ID EP691298
- DOI 10.37482/0536-1036-2020-6-111-119
- Views 244
- Downloads 0
Reduction of Paper Pulp Fluctuations in Tissue Paper Making Machine
The subject of the research is a paper for sanitary-hygienic purposes. The objects of the study are a pulper infeed system and a round grid perforated forming device. The purposes of the work are to identify sources and...
Typification of Forest Areas by Natural-Production Conditions Based on Cluster Analysis
The effectiveness of harvesting machines, their reliability, and the level of negative environmental impact depends on the degree of adaptation of the equipment to natural-production conditions (NPC). To choose the equip...
Monitoring and Control of Paper Web Moisture
Product quality is a key indicator of the positive outcome of pulp and paper production. Moisture content is one of the main paper quality characteristics. The moisture profile across the paper web width shows possible s...
Phenotypic Structure of Spruce Populations in the European North of Russia
Spruce populations in the north of the European part of Russia have formed with traits, the population-geographic variability of which has not been sufficiently studied. The research purpose is to study on the basis of b...
Differentiation of Plus Trees of Scots Pine by Xylem Conditions
 An essential stage in the establishment of seed orchards is the formation of an optimal composition, avoiding inbreeding depression in the produced seed material, which develops as a result of crossbreeding between clo...