Gyomfajok fémakkumulációjának vizsgálata szennyezett területen
Absztrakt
A növényzetnek fontos szerepe van a szennyezett talajok kezelésében. Munkánk során Cr, Cu, Ni, Pb, Sr és Zn fémekkel közepesen és erősen szennyezett területeken fehér libatop (Chenopodium album L.) és kaporlevelű ebszékfű (Tripleurospermum inodorum (L.) Sch. Bip.) egyedek Al, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sr és Zn koncentrációját vizsgáltuk a gyökerekben, szárban és levelekben. Tanulmányoztuk továbbá a talajminták és az egyes növényi szervek fémkoncentrációja közötti korrelációt. Megállapítottuk, hogy mindkét faj fémfelvételi képessége mérsékelt volt. A növényi szervek közül a legnagyobb Ca, K, Mg, Mn, Sr és Zn koncentrációt a levelekben találtuk. Emellett korrelációt mutattunk ki a talajok és a növények Al, Ca, Cr Cu, Fe, Mg, Ni, Pb és Sr koncentrációja között. Eredményeink alapján megállapítottuk, hogy a fehér libatop és a kaporlevelű ebszékfű alkalmasak lehetnek a fémszennyezés csökkentésére. Ez elsősorban föld feletti növényi szerveik fémakkumulációja révén valósulhat meg.
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