| Autor: |
Zięba, Stanisław, Banaś, Jan, Bujoczek, Leszek, Kożuch, Anna, Słupska, Alicja, Zaborski, Karol |
| Předmět: |
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| Zdroj: |
Acta Agraria et Silvestria. Series Silvestris; 2017, Vol. 55, p37-49, 13p |
| Abstrakt: |
The work presents analysis of volume and structure of timber resources in mountain mixed forest stands managed according to Swiss irregular cutting system. Research material consist of results of trees measurements on 413 control sample plots located in square net with the length of side 100 m in "Szczawiczne" object in Forest Experimental Station in Krynica. The results include analysis of tree measurements carried out in year 1975 and repeated in following years: 1986, 1994, 2001,2006 and 2011. Calculations were performed for 16 interpretation units created by joining together stands with the same species composition category and phase of stand development with total area of 455,86 ha. The work presents analysis of changes of volume and structure of timber resources in mountain mixed forest stands managed according to Swiss irregular cutting system. The study was conducted in stands of "Szczawiczne" object in Forest Experimental Station in Krynica. Research material consist of results of trees measurements on 413 control sample plots located in square net with the length of side 100 m in "Szczawiczne" object in Forest Experimental Station in Krynica. The results include analysis of tree measurements carried out from year 1975 and repeated in following years: 1986, 1994, 2001, 2006 and 2011. Calculations stand volume were performed for 16 interpretation units created by joining together stands with the same species composition category and the phase of stand development with total area 455,86 ha. On the basic of obtained results following conclusions were formulated. In analyzed stands there were observed significant changes of forest resources favorable from economic as well as natural point of view. The progress of target species such as: fir and beech and regress of forecrop species such: pine, spruce and alder were observed. Mean stand volume in "Szczawiczne" almost doubled from level of 147 to 284 m³ x ha-1. The biggest increase of volume occurred in Silver fir stands the smallest in forecrop stands. In Scots pine stands in terminal phase of development volume decreased. The volume increment doubled in average from the level of 5,92 m³ x ha-1 x year-1 in first period to about 11,93 m³ x ha-1 x year-1 in the last period. In years 2006-2016 Silver fir stands had the biggest volume increment (about 16,04 m³ x ha-1 x year-1). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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