Természetvédelmi célú léknyitások hatása egy cseres-tölgyes újulatára
Absztrakt
A természetvédelmi erdőkezelések célja a vágásos gazdálkodás által homogenizált erdők szerkezetének és fafaj-összetételének változatosabbá tétele, és ezáltal a biodiverzitás fokozása. Kutatásunkban természetvédelmi célú léknyitások hatásait vizsgáltuk kocsánytalan tölgy (Quercus petraea), mezei juhar (Acer campestre) és házi berkenye (Sorbus domestica) csemetéinek növekedésére, kezeletlen zárterdei kontrollhoz viszonyítva, a fény- és mikroklimatikus viszonyok tükrében. Eredményeink alapján lékek nyitásával úgy növelhető meg az újulati szintre jutó fény mennyisége, hogy közben megőrizhető a zárterdei hűvös-párás mikroklíma. A léknyitás segíti minden vizsgált fafaj csemetéinek növekedését, így megindítható a homogén, zárt állományok szerkezeti heterogenizációja. A megnövekedett fényből az elegyfafajok csemetéi jobban profitáltak, mint a tölgy, a léknyitásokkal tehát a faállomány jövőbeli elegyessége is fokozható.
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