Nutrition Area Of Tree: Analysis Of Methods

• Main Author: Rogozin, M.
• Format: Text
• Language: Russian
• Published: Zenodo 2018
• Subjects: forest stands; nutrition area of tree; methods of determination; evaluation; Isakov; taiga; Siberia
• Online Access: https://dx.doi.org/10.5281/zenodo.1312152; https://zenodo.org/record/1312152

The study of individual areas of tree nutrition is analyzed. The methods were compared: measurement of distances between trees, polygons of growth by simple division of distances between neighbors, polygons with division of distances between neighbors in proportion to their diameters, circular tests and “social groups” with the ratio of the sum of the diameters of the Krones of neighbors to the diameter of the crown of the central tree. Considered the major works in which these methods used or applied recommendations for the care of the forest on their basis. Logical analysis showed that if the assumption was made that the larger the size of the trees, the greater the area of feeding that came to them, then three mutually dependent variables were used: the tree increment (1); diameter of the tree or crown size (2); the tree nutritional area, determined from the distances from neighbors, is proportional to their size (3). Since the first and third quantities depend on the second, the first quantity will depend on the third. Therefore, an independent variable to calculate the area of power will be its value, determined by the polygons with a simple division of distances between neighbours. Another independent variable is the average distance to the nearest neighbour’s. All other methods operate with dependent variables. They are incorrect for modelling and calculating the strength of the influence of tree feeding areas on their size and growth. : {"references": ["Farber, S. K., & Sokolov, V. A. (2005). Methodological foundations of forest stands modeling. Krasnoyarsk: Daria-Press, 79.", "Grabarnik, P. Ya. (2010). Analysis of the horizontal structure of a stand: a model approach. Forest Science, (2). 77-85.", "Sinyagin, I. I. (1975). Plants of plant nutrition. Moscow, Roslkhozizdat, 384.", "Nagimov, Z. Ya. (2000). 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