Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2008.1258.1262BagherzadehAli BrummeRainer BeeseFriedrich 92008119To investigate the effect of silvicultural methods on forest floor
C, N and elements stocks an experiment was carried out by sampling the
forest floors of a 100-120 years old species including beech, Norway spruce
and mixed beech-spruce at the Solling forest, Germany. While the stocks
of carbon and nitrogen in the forest floors of pure beech and spruce were
significantly influenced by species specific differences of litter quality
(p<0.001), no significant differences were detected between pure and
mixed species stands. Forest floor mass, some elements concentrations
and C/nutrient ratios were significantly affected by tree species differences,
while no clear dependency between pH and site specific effects was found
among pure stands. Acid element concentrations in the forest floors of
pure spruce were remarkably higher than the values obtained at beech stand,
while the stocks were to some extent modified in mixed silviculture. The
base-pump effect of beech significantly controlled variation between mono
cultures on calcium stocks, while the acidifying effect of spruce in mixtures
resulted in modification of Ca stocks of forest floors. The status of
other nutrient elements at mixed species cultures due to variation in
nutritional properties and composition of litter compared to pure species
were between the range of values observed in mono cultures.]]>Augusto, L., J. Ranger, Q. Ponette and M. Rapp,200057313324Berg, B.,20001331322Berg, B. and V. Meentemeyer,20022428392Berg, B., M.B. Johansson and V. Meentemeyer,20003011361147Berger, T.W., C. Neubauer and G. Glatzel,2002Picea abies) and mixed species stands in Austria.]]>159314Corre, M.D., F.O. Beese and R. Brumme,200313287298Finzi, A.C., N.V. Breemen and C.D. Canham,19988440446Meiwes, K.J., H. Meesenburg, H. Bartens, P. Rademacher and P.P.K. Khanna,200257428433Norden, U.,19949916Prescott, C.E., B.R. Taylor, W.F.J. Parsons, D.M. Durall and D. Parkinson,19932315761586Rothe, A. and D. Binkley,20013118551870Rothe, A., K. Kreutzer and H. Kuechenhoff,20022404756Sanger, L.J., P. Cox, P. Splatt, M.J. Whelan and J.M. Andeson,1996Pinus sylvestris needles and litter from sites with different soil characteristics: Lignin and phenylpropanoid signature.]]>28829835Son, Y. and S.T. Gower,199253175193Stump, L.M. and D. Binkley,199323492502Tice, K.R., R.C. Graham and H.B. Wood,1996704962Tiktak, A., M. Bredemeier and Kees van Heerden,1995831734Vesterdal, L. and K. Raulund-Rasmussen,19982816361647Vesterdal, L.,19992995105