Báo cáo lâm nghiệp: "The effect of point application of fertilizers on the soil environment of spread line windrows in the Krušné hory Mts" docx

... were observed mainly in regions exposed to the heavy deposition e effect of point application of fertilizers on the soil environment of spread line windrows in the Krušné hory Mts. D. V 1 , ... scarification the top -soil horizons were moved into line windrows, which caused marked degradation of the soil environment. e present revita...

Ngày tải lên: 07/08/2014, 03:22

... activity in the past can be recorded from the fluctuation of the carbon stable isotope ratio in tree rings and assigned to the exact year or time period (G, C 1994). Norway spruce (Picea ... was performed using the 13 C stable isotope record from three trees only. e main objective of our study was to enlarge the data set and to validate the...

Ngày tải lên: 07/08/2014, 03:22

... past Multifunctional forestry practices as a land use strategy to meet increasing private and public demands in modern societies F. S Zurich, Switzerland ABSTRACT: e present distribution ... it has integrated increasing societal de- mands into current management practices. To assess the present and future options in management of forests,...

Ngày tải lên: 07/08/2014, 03:22

... colo- nization and plant growth due to the interchange of carbon, phosphate and nitrogen between the host fungi and bacteria. According to B-E-D and M (1998), the dual inoculation of AM and ... attack in the rhizosphere of A. catechu. On the basis of the results it can be concluded that the co- inoculation of Rhizobium sp. and Trichode...

Ngày tải lên: 07/08/2014, 04:20

... Republic ABSTRACT: The effect of ethephon (80, 100 and 120 mg·l –1 ) and gibberellic acid (GA 3 ) (40, 300 and 1,000 mg·l –1 ) on the germination capacity (GC) and mean germination time (MGT) of European beech ... of the present paper was to deter- mine the effect of gibberellic acid and ethephon on overcoming beechnut dormancy and stimulati...

Ngày tải lên: 07/08/2014, 10:21

... years after the thinning similarly like in previous years. Positive ef- fects of the high-type thinning in 2001 were reflected in the 17%increase of LAI in 2002. e realized thin- ning exhibited ... aboveground biomass (TBa) and the total aboveground biomass increment (DTBa) were ob- tained on the basis of stand inventory realized at the end of each growin...

Ngày tải lên: 07/08/2014, 10:21

... the effect of climatic factors on radial increments of trees e effect of climatic factors on radial increments of trees was studied in detail by means of corre- lation analysis on standardized ... correlation models of the effect of climatic factors on radial increments of trees After performing the detailed analysis of pair cor- relation...

Ngày tải lên: 07/08/2014, 10:21

... primary productivity in ter- restrial ecosystems (J et al. 1999), N miner- Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China G. Q 1,2 , Q. ... is maintained at 20°C. For the given vegetation type of Changbai Mountain, soil C and N mineralization rate, potential mineralizable C (C 0 ) and potential ra...

Ngày tải lên: 07/08/2014, 10:21

... monitoring of forest conditions after liming is required. ere exist a lot of data on the liming effect on the soil chemistry changes but data on the liming effect on the mineral nutrition of ... observation Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. MSM 6215648902. e effect of liming on the min...

Ngày tải lên: 07/08/2014, 10:21

... 511 c  INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006033 Original article Crown architecture and leaf habit are associated with intrinsically different light-harvesting efficiencies in Quercus seedlings ... 37–39]. In agreement with this, we observed the lowest mean and total leaf areas in seedlings of Mediterranean oaks (Fig. 3). The reduction in...

Ngày tải lên: 07/08/2014, 16:20

... no data on water relations and mineral nutrition is available for infected oaks under field conditions. The knowledge about the effects of Phytophthoras on mature oaks under natural conditions ... analysis of the effects of air pol- lution on forests, 4th ed., United Nations Economic Commission Impact of P. quercina on mature oaks 671 for Europe Convention on Lon...

Ngày tải lên: 07/08/2014, 16:20

... A comparative study using floristic and abiotic indices in sessile oak (Quercus petraea Liebl.) stands in northern France Laurent BERGÈS a *, Jean-Claude GÉGOUT b , Alain FRANC c a Cemagref, ... combined the CA Axes and soil water capacity and was slightly better than models M4 and M1. Model M7 combined abiotic indices (SWC 0-150 and Mg/K)...

Ngày tải lên: 08/08/2014, 00:22

... 691699 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003063 Original article Net effect of competing vegetation on selected environmental conditions and performance of four spruce seedling stock sizes ... species and their interactions on seedling survival and growth, eight years after plantation. 2. MATERIALS AND METHODS The investigations we...

Ngày tải lên: 08/08/2014, 01:21

... du peuplement. 2.2. Méthode de relevé Nous avons réalisé 85 relevés sur des placettes de forme carrée de 40 mètres de côté. 2.21. Etude de la structure du peuplement ligneux Notre ... caractéristiques des peuplements irréguliers (variation de la circonférence des arbres, recouvrement des strates de 1,30 m à 8 m et de 8 m à 16...

Ngày tải lên: 09/08/2014, 02:21

... in contradiction with the data of large numbers of papers reporting that ozone fumigation causes decreased rates of assimilation (A). However, examples of ozone fumigation not ... briefly reports the results of an investigation into the long-lastinc l effects of ozone fumiga- tion upon photosynthesis of Norway spruce. Measurements were...

Ngày tải lên: 09/08/2014, 04:20