Produkcija biomase amorfe u gospodarskoj jedinici „Slavir“

Scientific paper - Original scientific paper

• Title (english): Indigobush biomass production in management unit „Slavir“
• Author: Željko Zečić
• Author: Željko Tomašić
• Author: Tomislav Topalović
• Author: Dinko Vusić
• Author's institution: University of Zagreb; Faculty of Forestry and Wood Technology
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Forestry

Abstract (croatian)

Istraživanje produkcije biomase amorfe provedeno je na području UŠP Vinkovci, Šumarije Otok, u gospodarskoj jedinici „Slavir“ na pet pokusnih ploha. Na odabranim plohama u zimskom je razdoblju obavljena sječa svih stabalaca amorfe i određena je njihova masa. Uzeti su uzorci za gravimetrijsko određivanje postotnog udjela vode i stereometrijsko određivanje obujma. Utvrđena je gustoća uzoraka u svježem stanju. Na posebnoj pokusnoj plohi primijenjena je ista metoda za pomladak hrasta i jasena. U ljetnom razdoblju su na istim plohama uzeti uzorci s ciljem određivanja udjela vode u razdoblju vegetacije. Utvrđen prosječni udio vode u zimskom razdoblju iznosio je 30,35 %, a u ljetnom 48,38 %. Na temelju mase svih stabalaca u zimskom razdoblju i pripadajućeg srednjeg udjela vode te površine pojedine pokusne plohe izračunata je produkcija drvne tvari amorfe, koja se kretala od 3,08 t/ha do 6,96 t/ha suhe tvari. Iznimka je pokusna ploha 1 gdje se nalaze samo višegodišnje biljke, te je zbog njihovog akumuliranog prirasta produkcija na ovoj plohi znatno veća, s utvrđenim iznosom od 16,82 t/ha suhe tvari. Prosječna gustoća uzoraka drva amorfe u svježem stanju iznosi 0,80 g/cm3. Za usporedbu, prosječni udio vode u pomlatku hrasta i jasena za zimsko razdoblje je 40,64 %, a za ljetno 51,51 %. Produkcija biomase pomlatka hrasta i jasena iznosi 5,46 t/ha suhe tvari. Prosječna gustoća utvrđena na uzorcima hrasta i jasena u svježem stanju iznosi 1,09 g/cm3.

Abstract (english)

Research was conducted in the area of UŠP Vinkovci, Forest office Otok, management unit „Slavir“, on five sample plots (figure 3-6). In winter, felling of all indigobush plants on selected plots was done and their mass was determined. Samples for gravimetric moisture content determination and stereometric volume determination were taken. Density of fresh samples was calculated. Same method was applied for oak and ash young plants on extra sample plot. On the same plots samples for vegetation period moisture content determination were taken in summer. Average moisture content (figure 9) of 30.25% in wintertime (W) and 48.38% in sumertime (S) was determined. Based on the mass of all plants, average moisture content and size of each sample plot production of dry matter was calculated. Mass of dry matter (figure 11) ranges from 3.08 t/ha to 6.96 t/ha with exception of sample plot with older, multiannual plants that had a 16.82 t/ha dry mass production. Average density (figure 10) of fresh indigobush samples was 0.80 g/cm3. For comparison, average moisture content of oak and ash young plant was 40.64% in wintertime and 51.51% in summertime. Biomass production was 5.46 t/ha. Average density of fresh oak and ash samples was 1.09 g/cm3.

• Keywords (croatian): morfa; biomasa; produkcija; udio vode; suha tvar; gustoća
• Keywords (english): indigobush; biomass; production; moisture content; dry mass; density
• Language: croatian
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review
• Publication version: Published version
• Journal title: Šumarski list
• Numbering: vol. 139, no. 9-10, pp. 419-427
• p-ISSN: 0373-1332
• e-ISSN: 1846-9140
• URN:NBN: urn:nbn:hr:108:034680
• Publication: 2015
• Type of resource: Text
• Access conditions: Open access
• Created on: 2020-12-18 12:54:35