Puudevahelise konkurentsi muutumine harvendusraietel männikutes
Laen...
Kuupäev
2024
Kättesaadav alates
04.09.2024
Autorid
Mõts, Lauri
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Eesti kõige levinum puuliik, mänd, on suure majandusliku ja ökoloogilise tähtsusega.
Puudevaheline konkurents mängib olulist rolli metsaökosüsteemi dünaamikas, mõjutades
puistu struktuuri ja puude tervislikku seisundit. Harvendusraie on üks oluliseim
metsandusmajanduslik võte, mille eesmärk on reguleerida puude arvu ja parandada puistu
kvaliteeti.
Bakalaureusetöö eesmärk on analüüsida, kuidas puudevaheline konkurents muutub
männikutes pärast harvendusraiet, millised on selle mõju puistu struktuurile ja
dünaamikale ning koguda takseerandmed ja võrrelda neid metsaregistris olevatega.
Tulemused kinnitavad, et harvendusraied mõjutavad puudevahelist konkurentsi,
vähendades seda oluliselt ja parandades puude kasvutingimusi. Enamikul puudel paranes
konkurentsisituatsioon pärast raiet, mis tõstab nende ellujäämise ja kasvu tõenäosust.
Hegyi indeksi tulemused olid oluliselt erinevad enne ja pärast raiet, mis viitab selgetele
muutustele puudevahelises konkurentsis. BAL indeksi tulemused näitasid väiksemaid
muutusi, mis viitab, et harvendusraie mõju sõltub ka valitud raiemeetodist.
Uuring aitab paremini mõista metsaökosüsteemi reageerimist metsamajandamisele ja
võimaldab välja töötada tõhusamaid metsanduspraktikaid, mis arvestavad puudevahelise
konkurentsi dünaamikaga. Harvendusraied on vajalikud, et tagada puude optimaalne kasv
ja puistu kõrge kvaliteet, eriti majanduslikult tähtsate puuliikide, nagu hariliku männi,
puhul.
The most common tree species in Estonia, Scots pine, is of great economic and ecological importance. Intra-tree competition plays a crucial role in the dynamics of forest ecosystems, affecting the structure and health of stands. Thinning is one of the most important forest management techniques aimed at regulating the number of trees and improving stand quality. The aim of this bachelor's thesis is to analyze how intra-tree competition changes in Scots pine stands after thinning, what the effects on the structure and dynamics of the stands are, and to collect assessment data and compare it with the data in the forest register. The results confirm that thinning significantly affects intra-tree competition, reducing it and improving the growth conditions for trees. For most trees, the competition situation improved after thinning, which increases their chances of survival and growth. The results of the Hegyi index were significantly different before and after thinning, indicating clear changes in intra-tree competition. The results of the BAL index showed smaller changes, suggesting that the effect of thinning also depends on the chosen thinning method. This study helps to better understand the forest ecosystem's response to forest management and enables the development of more effective forestry practices that take into account the dynamics of intra-tree competition. Thinning is necessary to ensure the optimal growth of trees and high-quality stands, especially for economically important tree species such as Scots pine.
The most common tree species in Estonia, Scots pine, is of great economic and ecological importance. Intra-tree competition plays a crucial role in the dynamics of forest ecosystems, affecting the structure and health of stands. Thinning is one of the most important forest management techniques aimed at regulating the number of trees and improving stand quality. The aim of this bachelor's thesis is to analyze how intra-tree competition changes in Scots pine stands after thinning, what the effects on the structure and dynamics of the stands are, and to collect assessment data and compare it with the data in the forest register. The results confirm that thinning significantly affects intra-tree competition, reducing it and improving the growth conditions for trees. For most trees, the competition situation improved after thinning, which increases their chances of survival and growth. The results of the Hegyi index were significantly different before and after thinning, indicating clear changes in intra-tree competition. The results of the BAL index showed smaller changes, suggesting that the effect of thinning also depends on the chosen thinning method. This study helps to better understand the forest ecosystem's response to forest management and enables the development of more effective forestry practices that take into account the dynamics of intra-tree competition. Thinning is necessary to ensure the optimal growth of trees and high-quality stands, especially for economically important tree species such as Scots pine.
Kirjeldus
Bakalaureusetöö
Metsanduse õppekaval
Märksõnad
bakalaureusetööd, harilik mänd, konkurentsiindeksid, harvendusraie, takseerandmed