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据苏联《林业文摘》杂志介绍,在匈牙利对几个主要阔叶树种混交的研究表明,林分的生产力与树种的组成和腐植质层的厚度有很大的关系;树种组成的比例不同,生产力也就不一样。他们对腐植层厚度不一(41～60;61～80;81～100;101厘米以上)的褐色土壤上的不同组成的鹅耳枥,山毛榉和栎树林进行了两年的研究,弄清了林分的组成和类型与腐植质层厚度的相互关系。腐植质层厚41～60厘米的土壤适合于鹅耳枥—栎树林;腐植质层厚61～807厘米的土壤适合于鹅耳枥—山毛榉—栎树林;腐植层厚81～100厘米的土壤适合于栎
According to the magazine “Forestry Abstracts” in the Soviet Union, studies on the mixing of several major broad-leaved species in Hungary have shown that the productivity of stands is strongly related to the composition of tree species and the thickness of humus layers; the proportion of tree species is different and the productivity Not the same. They studied hornbeam, beech and oak forests of different compositions on brown soil of varying heights (41-60; 61-80; 81-100; 101 cm) and found that The relationship between the composition and type of stand and the thickness of humus layer. Humus layer soil thickness of 41 to 60 cm suitable for hornbeam - oak forest; humus layer thickness of 61 to 807 cm for hornbeam - beech - oak forest; humus layer of soil thickness of 81 to 100 cm In the oak