Водопоглощающая способность и макроэлементный состав опада и подстилки природных дубовых биогеоценозов байрачного леса северной степи Украины
2018
Бессонова, В. (Dniprovsky State Agrarian and Economic University, Dnipro (Ukraine) | Пономарёва, Е.
The fractional composition of litterfall and litter layer in natural oak phytocenoses of ravine forest in the Steppe zone of Ukraine was analyzed (forests with predominant oak trees: field maple- oak, lime-field maple-oak, elm-ash-oak, and Tatar maple-oak forests). There were no significant differences in the proportion of different components of both litterfall and litter layer from their total mass in different types of forests. The highest litter decomposition coefficient was found for elm-ash-oak forest and the least one – for lime-field maple-oak forest. However in all studied types of forest biocenoses it can be evaluated as delayed. The moisture absorption capacity, ash content and the content of mineral elements N, P, K, Са and Mg in litterfall and litter layer were investigated. The highest water absorption capacity was revealed in the liiterfall and litter layer of Tatar maple-oak forest and lime-field maple-oak forest. Litterfall is characterized by a lower water-absorbing capacity compared to litter layer. The ash content of the litter layer is also greater than that of the litterfall (the number of ash elements in the lit-terfall of the studied oak groves varies from 263, 26 to 488.62 kg per hectare). The litter layer is characterized by a smaller content of N, P, K, and Mg, but with a large amount of Ca compared to the litterfall.
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