Báo cáo lâm nghiệp: "Forest watershed runoff changes determined using the unit hydrograph method" pps

... 526/03/H036. Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands P. S 1 , ... 1992). Norway spruce (Picea abies [L.] Karst.) is the main edificator and stand-forming tree species in mountain spruces sta...

Ngày tải lên: 07/08/2014, 03:22

... results of phenological monitoring of the tree layer in a mixed stand in the region of the Drahanská vrchovina Upland in 2004–2007. e onset and duration of particular phenological stages are ... can also occur. Phenological data are a certain expression of the climate character of a given region. us, they can contribute to assess the...

Ngày tải lên: 07/08/2014, 03:22

... Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. MSM 6215648902. Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae) ... or at the end of April and at the beginning of May (H, Fig. 1. A female of the alder biological form of Galerucella lineola Fig. 2. e body...

Ngày tải lên: 07/08/2014, 03:22

... 266–270 Forest visitors’ opinions on the importance of forest operations, forest functions and sources of their financing L. Š Faculty of Forestry and Wood Sciences, Czech University of Life ... opinions on forest functions, on the importance of forest operations and on sources of financing for- est functions. e questions in th...

Ngày tải lên: 07/08/2014, 10:21

... data ob- tained in the areas of the Morava River floodplain in the area of Vrapač suggest that the development of the present ecosystems in the area in question began in the period of large-scale ... anthropogenic in uences that have over centu- ries led to the present state of the geobiocoenoses. Historical development of floodplain forests in...

Ngày tải lên: 07/08/2014, 10:21

... role in projecting future multi-functional forests is to harmonize the requirements for the Forest yield index and its applicability to the assessment of future forest yields L. K 1,2 , ... Examples of relative yield assessment in assumed conditions of even-aged, fully stocked forest stands, for the main types of target forests and most fre...

Ngày tải lên: 07/08/2014, 10:21

... Unit hydrograph is a basic method to show changes in runoff in the watershed. e investigation of runoff changes was carried out in the U Dvou louček watershed situated at the summit part of the ... runoff on the recession limb of the hydrograph. However, further investi- gations are needed. One of the suggested research questions is whether the forest stand will a...

Ngày tải lên: 07/08/2014, 10:21

... addition to them other roads also contain rural roads. e total length of single grades of forest transport roads in forests in the Czech Republic was rated dur- ing the forest inventory in the Czech ... classification forest transport roads are divided, in addition to grades, into forest roads and other roads leading through the forest. e...

Ngày tải lên: 07/08/2014, 10:21

... the distance when the blocks were on the borderline. e distance was measured using the laser telemeter with half -a- meter scale. e diameter was calculated and compared with the control measure ... of the diameter at various heights of stem using the wedge prism as a tool for measurement is a sufficiently accurate method for measurement and can be used for m...

Ngày tải lên: 07/08/2014, 10:21

... situation, but at least on a regional scale, then storm damage can be expected to occur more often on acidic soils. We therefore hypothesised that storm damage would be more frequent on sites ... susceptible to storm damage ([10, 40], this study). Thus it is possible that storm damage is not related directly to low soil pH, but is only more frequent in...

Ngày tải lên: 08/08/2014, 00:21

... concentration and leaf area index: a modelling analysis David WHITEHEAD a *, Adrian S. WALCROFT b a Landcare Research, PO Box 69, Lincoln 8152, New Zealand b Landcare Research, Private Bag 11052, Palmerston ... was 12.0 °C and mean annual rainfall was 1586 mm [38]. The temperature data were extrapolated to the field site assuming a wet adiabatic lapse rate and rain...

Ngày tải lên: 08/08/2014, 00:22

... shoot is still insufficient. The aim of this study was to determine whether changes take place in the submicroscopic structure of the distal part of an embryonic Norway spruce shoot during winter dormancy ... (2003) 461466 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003039 Note Mid-winter ultrastructural changes in the vegetative embryonic shoot...

Ngày tải lên: 08/08/2014, 01:21

Ngày tải lên: 08/08/2014, 01:22

... article Ecological light measurement in forests using the light degradation effect in hydrogenated amorphous silicon (a-Si:H) C Ammer G Krötz 2 1 Lehrstuhl für Waldbau und Forsteinrichtung der ... since the first light measurements were performed in forests, it has always been pointed out that the measuring system must record not only...

Ngày tải lên: 08/08/2014, 18:21

... response of eucalypts to mycor- rhizal inoculation in the Congo. For. Ecol. Manag. 24, 151-157 Ultrastructural and biochemical changes at the preinfection stage of mycorrhizal formation by ... & Trappe J.M. (1984) Ectomycorrhiza formation in eucalyptus. The ultrastructure of compatible and incompatible mycorrhizal fungi and associ...

Ngày tải lên: 09/08/2014, 04:20