Biomasa korenin v bukovih sestojih na dolomitni matični podlagi : diplomsko delo (visokošolski strokovni študij - 1. stopnja)

Krese, Anže (avtor), Kadunc, Aleš (mentor)

Namen raziskave je bil ugotoviti, kako na biomaso korenin vpliva starost sestojev, produktivnost rastišča in ali so razlike med deleti posameznih debelinskih frakcij v bukovih sestojih na dolomitni matični podlagi. Poiskani sta bili dve različno produktivni bukovi rastišči, kjer so bile zakoličene po 3 ploskve v različnih razvojnih fazah. Sestoji na posameznih ploskvah so bili premerjeni ter ugotovljena je bila lesna zaloga, temeljnica in število dreves na hektar. Na vsaki ploskvi je bilo izvrtanih po 30 izvrtkov. Korenine so bilerazvrščene po globinskih in debelinskih razredih korenin, ugotovljena je bila tudi njihova doltina in masa. Rezultati analiziranih korenin so pokazali,da so bila tla na produktivnejšem rastišču globlja in da so vrednostidoltin korenin na manj produktivnem rastišču večje. Razlike med ploskvami v doltini korenin je opaziti predvsem v zgornijh delih tal pri najtanjših debelinskih razredih korenin. Ugotovljena je bila pozitivna povezava med doltino korenin in temeljnico ter negativna povezavo med doltino korenin in gostoto sestoja oziroma razdaljo do drevesa. Pri masi korenin ni bilo ugotovljeno niti razlik med ploskvami, niti povezave z nadzemnimi sestojnimi znaki. Iz rezultatov je razvidno, da je količina korenin glede na starost različna in da se deleti posameznih debelinskih frakcij razlikujejo med sestoji različne produktivnosti.

• Jezik: Slovenski jezik
• Ključne besede: korenine, biomasa korenin, dolžina korenin, bukovi sestoji, produktivnost rastišča, dolomitna podlaga
• Vrsta gradiva: Diplomsko delo
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: BF - Biotehniška fakulteta
• Kraj izida: Ljubljana
• Založnik: [A. Krese]
• Leto izida: 2011
• Št. strani: VII, 26 f.
• PID: 20.500.12556/RUL-17767
• UDK: 630*16(043.2)=163.6
• COBISS.SI-ID: 3245222
• Datum objave v RUL: 11.07.2014

Sekundarni jezik

• Jezik: Angleški jezik

Izvleček

The aim of this research was to determine how the biomass of roots is influenced by age of stands, site productivity and whether there are any differences between proportions of individual thickness fractions in beech stands on the dolomited bedrock. Therefore, two beech sites with different productivity were selected and 3 plots in various developmental stages were mapped out. On these plots the stands were measured and subsequently the growing stock, basal area and stand density were found out. In each plot 30 soil cores were obtained. Roots were classified according to its depth and thickness classes and their length and weight were determined. Roots analysis results showed that the soil was deeper in the more productive growing area and that the roots of the less productive site are longer. Differences between plots by means of roots length were observed mainly in the upper soil layers with the thinnest root thickness class. It was found out that relationship between root length and stand basal area is positive while relationship between root length and stand density or distance to the tree is negative. By means of roots weight no differences were found between plots nor any relation to the aboveground stand parameters. From the results it can be concluded that the amount of roots is in relation to age of stands and that the proportion of individual thickness fractions depend on stand productivity.