出版社：Forestry Commission of the Hungarian Academy of Sciences
摘要：The paper deals with the stand structure and yield of black locust (Robinia pseudoacacia L.) plantations mixed with white poplar (Populus alba L.) in various proportions, partly applying a new methodological approach. The main stand structure and yield factors were determined separately for each species, measured stem by stem, using volume functions prepared for each species. To demonstrate the advantage of white poplar - black locust mixed plantations over monocultures, a set of models expressing single-tree growth was elaborated. The models were applied to simulated stands with different proportions of P. alba and R. pseudoacacia. The estimated growth indicated that the advantage of mixing the two species peaked at about 40-50% P. alba (basal area percentage) between age 16 and 21. The trial may indicate that if two species have fast initial growth rates and similar rotation ages, planting them in mixed stands might lead to increased yield
关键词：Forest yield ; P. alba and R. pseudoacacia mixed stands ; single-tree growth model
