خيارات البحث
النتائج 1 - 10 من 38
Liming effects on some chemical and biological parameters of soil (spodosols and histosols) in a hardwood forest watershed.
1990
Yavitt J.B. | Newton R.M.
Operational liming of surface waters in Sweden.
1988
Nyberg P. | Thoerneloef E.
Surface liming of immission clear-cuts: benefits and risks
2002
Podrazsky, V. | Ulbrichova, I. (Czech University of Agriculture, Prague (Czech Republic). Faculty of Forestry)
Presented study documents the effects of experimental liming on the forest soils and forest plantations (Norway spruce). Liming was performed in the top part of the Orlicke hory Mts., in the altitude 1100 m. Results documented mutual effects on the forest soil as well as on the newly established Norway spruce plantations. It was evaluated the effect of liming on the soil pH, soil adsorption complex, exchangeable nutrients. Special attention was paid to the nitrogen dynamics and to the plantation growth and nutrition
اظهر المزيد [+] اقل [-]Dynamics of forest sites after liming
2002
Kunes, I. | Ulbrichova, I. (Czech University of Agriculture, Prague (Czech Republic). Faculty of Forestry)
The contribution summarizes outputs of annual measurements that were made in the eleven-year long period of observation (1991-2001). In this case, the liming had markedly positive effect on prosperity of spruce plantation up to now. The limed variants "surface" and "planting pit" show lower values of the total mortality than the control variant. Furthemore, the mean value of the periodic annual increment of the trees of the control variant is clearly lower than the mean values of the variant "surface" and the variant "planting pit". According to soil analyses the above described forms of liming do not seem to induce any serious negative changes within soil in this case
اظهر المزيد [+] اقل [-]The effect of liming and correction fertilization on heavy metal and macronutrient concentrations in soil solution in heavy-metal polluted scots pine stands
1999
Derome, J. | Saarsalmi, A. (Rovaniemi Research Station, Finnish Forest Research Institute, P.O. Box 16, FIN-96301 Rovaniemi (Finland))
The effects of different fertilizers on the ciliate communities of forests
1993
Lehle, E. (Ulm Univ. (Germany). Abt. Oekologie und Morphologie der Tiere) | Funke, W.
The liming of forest soils in Finland
1989
Derome, J. | Paetilae, A. (The Finnish Forest Research Institute, Vanda (Finland))
Microbial activity in forest soils in relation to acid/base and carbon/nitrogen status
1989
Persson, T. | Wiren, A. (Swedish University of Agricultural Scieces, Uppsala (Sweden). Dept. of Ecology and Environmental Research)
Bioelement content and biomass in Scots pine: effect of acidification and liming
1990
Popovic, B. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research)
The effects of stream liming on water chemistry and anadromous yellow perch spawning success in two Maryland coastal plain streams
1988
Janicki, A. | Greening, H.S.
