Popis článkuMnožství a distribuce nadzemní biomasy borovice lesní v oblasti přirozených borů.
[The amount and distribution of above-ground biomass of Scots pine on natural pine sites] 108 - 114.
|Název článku:||Množství a distribuce nadzemní biomasy borovice lesní v oblasti přirozených borů|
|Autor:||Lukáš Bílek, Jiří Remeš, Martin Fulín, Tina Chalupová , Jiří Procházka|
This paper shows the distribution of above-ground biomass of Scots pine. The data were collected in the Municipal forests of Doksy Ltd. (Czech Republic) in a natural pine stands on acidic (0K) and nutrient-poor (0M) forest sites. Eight selected sample trees were felled and divided into particular compartments. Samples were analysed for nutrient content in the laboratory of Forestry and Game Management Research Institute in Strnady. Total dry weight of individual trees on the acidic site ranged from 578 kg to 1,246 kg, and on the poor site it ranged from 445 kg to 572 kg. In the first stand the timber biomass (d ≥ 7 cm) ranged from 77% to 83%, while in the second stand the proportion of timber biomass for individual trees varied from 76% to 86%. Bark and needles were high in nutrients (Ca, Mg and K, P, N, S respectively). Based on our results, 54 t and 28 t of dry matter of wood residues were potentially available per 1 ha of forest stand. Nevertheless, extraction of this amount of harvest residues would correspond to the removal of approx. more than 30% of Ca, Mg, K, more than 40% of S, and more than 50% of P from the total above-stem forest biomass.