The growth and soil condition of the Japanese black pine seedling that was planted in the Shonai airport green buffer zone

Abstract

In this paper, the distribution of root systems, the growth and the soil condition were investigated, about 15 Japanese black pines that were planted to the Shonai airport green buffer zone and the nearby windbreak. As a result, the following results were obtained. 1) The relation between the tree height and the root system quantity was straight line with both logarithms. 2) It turned out that phase rate of the object ground had no problem to the root system progress in the soil condition. 3) The growth proportion of the small seedling was higher than the large seedling. From these, we obtained such a conclusion that the small seedling is more advantageous than the large seedling in windbreak development.