苏联森林土壤占有的面积超过10亿公顷,其中62%复被着天然林,38%为临时森林破坏后的和沼泽植被复盖,此外,在草原和半荒漠带防护林的影响下,大约有2百万公顷的黑钙土和栗钙土反映出了森林土壤的性质与特征。因此,森林土壤分类问题在适地适树和林分自然生产率方面具有特别重要的意义。 Forest soils occupy more than 1 billion hectares in the Soviet Union, of which 62% are rehabilitated by natural forests, 38% are covered by temporary forest cover and swamp vegetation, and about 2 are under the influence of grassland and semi-desert shelterbelts One million hectares of chernozem and chestnut soil reflect the nature and characteristics of forest soils. Therefore, the issue of forest soil classification is of particular importance in terms of adapting to the natural productivity of trees and stands.