Báo cáo lâm nghiệp: "Effects of a calcium deficiency on stomatal conductance and photosynthetic activity of Quercus robur seedlings grown on nutrient solution" pdf
... water, and after stabilisation of stomatal conductance, the shoot was trans- ferred to a tube containing an aqueous solution of ABA (10 -3 M). Stomatal conductance was ... balanced by chloride and malate; ii) accumulation of sucrose through photosynthetic carbon fixation; and iii) accu- mulation of sucrose derived from starch breakdown...
Ngày tải lên: 08/08/2014, 18:21
... type situated on acidic, waterlogged and locally peaty soils. e total thickness of Quaternary unconsoli- dated material (sandy and clayey soil with 20–50% amount of coarse fraction) ranges from ... generation. Black area is a permanent stream runoff source. Horizontally-hatched areas generate runoff seasonally in late winter, spring and early summer. Areas enclosed with a...
Ngày tải lên: 07/08/2014, 03:22
... high quantity of spores that can be obtained from one basidioma and the ease of application of this type of inoculum makes of it a method particularly well suited for large-scale inoculation of containerised ... ver- miculite ameliorates the aeration properties of the substrate and it has certain cation-exchange capacity which means higher availability of nutrients like...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: " Effects of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate" potx
... individually compared in regards to the vegetation. 2.4. Data analysis For the statistical comparison of data, mean values and dispersion measures of height, basal diameter and thickness of growth ... afforestations 19 We have studied the correlation existing between the annual and the seasonal rainfall and the annual trunk growth, and the only correlation shown is that of...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Effects of a clear-cut on the in situ nitrogen mineralisation and the nitrogen cycle in a 67-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantation" potx
... Sparling G.P., Burke C.M., Smith C.T., Microbial bio- mass C and N, and mineralizable-N, in litter and mineral soil under Pinus radiata on a coastal sand: Influence of stand age and harvest management, ... (moisture, nitrate-N, ammonium-N, mineral N) or fluxes (inputs, leaching, nitrification, ammonification, mineralisation) before and after harvest were tested with analysis...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Effects of nitrogen on the selection of food by Phyllobius arborator (Herbst)" pot
... increased consumption of food in the creation of a fat body in females of Lochmaea caprae (L.) Differences of imagoes in the consumption of food in particular variants cannot be confronted with ... BARONIUS K., KUHN A. J., NEBE W., 2000 . Biomass and nutrient relationships of Betula pendula, Fagus sylvatica, Picea abies and Abies alba with varying nitrogen and sulph...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Effects of spruce, beech and mixed commercial stand on humus conditions of forest soils" pdf
... growing season, in autumn, after the leaf fall (Fagus sylvatica) in 2004–2006. Particular samples were taken by a standard method using a metal frame of a known area (0.1 m 2 ). In each of the ... 2005 and 2006 in all three stands. At five places in each of the vari- ants, pedological ditches were dug and by means of a shovel and knife or a soil probe, Ah horizon wa...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Evaluation through a simulation model of nutrient exports in fast-growing southern European pine stands in relation to thinning intensity and harvesting operations" doc
... calculate the accumu- lation and the export of nutrients over time in Pinus pinaster (maritime pine) and Pinus radiata (radiata pine) stands under a range of silvicultural alternatives, harvesting ... scenarios and stand productivities that are common in South Europe, and re- late this values to mean soil nutrient capitals. 2. MATERIAL AND METHODS 2.1. Tree biomass equations...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: "Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings" ppsx
... problems; alterations in the availability and status of water (dehydration), changes in the spatial organiza- tion of biological membranes, and a retardation of biochemi- cal and chemical reactions ... morpho-physiological and growth parameters have been taken into account, as well as the field performance of plants one year after transplantation. 2. MATERIALS AND METHODS 2...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: " Effects of intensive versus no management strategies during an outbreak of the bark beetle Ips typographus (L.) (Col.: Curculionidae, Scolytinae) in the Tatra Mts. in Poland and Slovakia" ppsx
... between Slovakia (75% of mountain land area) and Poland (25% of area). The entire Tatra Mts. are protected areas and comprise two National Parks: Tatrzański Park Narodowy (TPN) in Poland, created in ... outbreak dynamics, a database containing detailed data of the stands was assembled. These data were referenced to the forest sub-compartments as basic area units; for each unit, da...
Ngày tải lên: 08/08/2014, 00:22