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A Method of Iteration of Averages in Ecological Research
Arid Ecosystems Pub Date : 2023-08-12 , DOI: 10.1134/s2079096123030149
Yu. I. Sukhorukikh , S. G. Biganova

Abstract

The study and conservation of biological diversity is one of the global contemporary environmental problems of world significance. The goal of the study is to propose a method for identifying promising plants based on iteration of average values. For this purpose, nine trial plots were laid in the steppe, forest-steppe, and mountain zones of the Northwestern Caucasus in protective and forest stands. Based on well-known methods, the height, trunk diameter, crown radius, abundance of fruiting, weight and selection value of nuts were studied. We studied the change in the average values of the indicators at different numbers of iterations. A method for identifying promising individuals based on the values of the average of iterations 4 and 5 was proposed. The proposed method was compared with the known method based on the values of the sum (difference) of the mean and double standard deviation. With a statistically normal distribution of indicators, the known and proposed methods give close values in the direction of increase or decrease in the indicator. Using the known method with a statistical distribution that differs from normal in some cases gives meaningless values. The proposed method based on the average value of iterations 4 and 5 in the direction of increase or decrease in the studied indicator allows one to use it to select objects with a statistical distribution that differs from normal.



中文翻译:

生态研究中的平均值迭代方法

摘要

生物多样性的研究和保护是具有世界意义的当代全球环境问题之一。该研究的目标是提出一种基于平均值迭代来识别有前途植物的方法。为此,在西北高加索地区的草原、森林草原和山区的保护林和林地中铺设了九块试验田。采用众所周知的方法,对坚果的高度、树干直径、树冠半径、结果丰度、重量和选择价值进行了研究。我们研究了不同迭代次数下指标平均值的变化。提出了一种基于迭代 4 和 5 的平均值来识别有前途个体的方法。根据平均值和双标准差之和(差)的值,将所提出的方法与已知方法进行比较。对于指标的统计正态分布,已知和提出的方法给出指标增加或减少方向上的接近值。在某些情况下,使用具有与正态分布不同的统计分布的已知方法会给出无意义的值。所提出的方法基于在研究指标增加或减少的方向上迭代 4 和 5 的平均值,允许人们使用它来选择具有与正态分布不同的统计分布的对象。已知的和提出的方法给出了指标增加或减少方向上的接近值。在某些情况下,使用具有与正态分布不同的统计分布的已知方法会给出无意义的值。所提出的方法基于在研究指标增加或减少的方向上迭代 4 和 5 的平均值,允许人们使用它来选择具有与正态分布不同的统计分布的对象。已知的和提出的方法给出了指标增加或减少方向上的接近值。在某些情况下,使用具有与正态分布不同的统计分布的已知方法会给出无意义的值。所提出的方法基于在研究指标增加或减少的方向上迭代 4 和 5 的平均值,允许人们使用它来选择具有与正态分布不同的统计分布的对象。

更新日期:2023-08-14
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