Sukhorukikh Yu.I., Biganova S.G. THE METHOD OF ITERATING AVERAGES IN ENVIRONMENTAL STUDIES // Arid Ecosystems. 2023. Vol. 29. № 3 (96). P. 124-130. | PDF
The study and conservation of biological diversity is a global environmental problem of our time and is of world significance. The aim of our work is to propose a method for identifying promising plants by iterating means. To do this, we laid 9 test sites in the steppe, forest-steppe and mountain zones of the North-Western Caucasus in protective and forest plantations. Based on already known methods, we studied the height, trunk diameter, crown radius, abundance of fruiting, weight and selection value of nuts. We studied the change in the average values of the indicators for different numbers of iterations. As a result, we propose a method for identifying promising individuals based on the mean values in iterations 4 and 5. We compared the proposed method with another method based on the sum (difference) of the mean and twice the standard deviation. With a statistically normal distribution of indicators, both methods show similar values — in the direction of increasing or decreasing the indicator. Using an already known method with a statistical distribution that differs from normal, in some cases gives meaningless values. The method we propose is based on the average value of iterations 4 and 5 in the direction of increasing or decreasing the studied indicator and allows you to use it to select objects with a statistical distribution that differs from the normal one.
Keywords: ecological studies, method, iteration, averages, statistical distribution, organisms, productivity.