Báo cáo lâm nghiệp: "The effects of thinning on the structural diversity of coppice forests" doc

... check the suitability of the de- signed model for the prediction. Deviance residu- als are based on the contribution of the observed responses to the log-likelihood statistic, while Pearson χ 2 ... is in transition between the previous regions, the or- der of factors was similar to that for the Kysuce re- gion.  e most important factors were the position towa...

Ngày tải lên: 07/08/2014, 10:21

... waterlogged conditions [9, 27]. Photosynthesis would also be inhibited due to the increased participation of competing pathways and consumption of electrons and reductant in non- photosynthetic processes ... Another poten- tial limitation is the diffusion of CO 2 from the intracellular spa- ces within leaves to the sites of carboxylation in the chloroplast (mesophyll conduc...

Ngày tải lên: 08/08/2014, 00:22

... 2004). RESULTS AND DISCUSSION Krušné hory Mts. – regeneration Fig. 1 illustrates the distribution of regenera- tion on inventory plots in the territory concerned. Regeneration on only one subplot was sufficient ... Reduction of regen- eration during repeated measurement Non-forest No change in presence of regeneration Presence of regeneration only by 1 st measurement Presenc...

Ngày tải lên: 07/08/2014, 03:22

... at the development of molecular marker systems for both the rapid and accurate identification of poplar accessions and the determination of genetic relation- ships between these accessions at the ... ramet of each accession listed in Table I were planted in the collection of the Research Institute of Forestry at the Chinese Academy of Forestry. 2.2. DNA extraction D...

Ngày tải lên: 07/08/2014, 16:20

... δ 13 C, stable carbon isotope composition. 1. INTRODUCTION Application of fertiliser often increases the growth of Pinus pinaster Ait. and other conifers [24, 38]. The mass and area of foliage increases ... photosynthesis and/or greater WUE as primary causes of the growth response to fertiliser application for field-grown conifers. Studies on plant nutrition often focus on...

Ngày tải lên: 08/08/2014, 00:21

... growth units (Biotronic, Uppsala, Sweden). The aeroponic growth units were automated to control the composition of the nutrient solution that was continuously recycled and sprayed on the root systems ... addition of P free nutrient solution. In the free-access treatment (HP), nutrient solution conductivity was adjusted to 300–350 µS cm –1 by the addition of nutrient soluti...

Ngày tải lên: 08/08/2014, 00:22

... were measured in the young leaves of the second flush, with a mean of 14 mg g –1 FW. The lowest concentration was observed in the underlying nodes of the second flush, with a mean of 2 mg g –1 ... stage, the apex of the second flush contains more sugar (sucrose and reducing sugar) than the underlying nodes of the same flush. Comparison between the apex and yo...

Ngày tải lên: 08/08/2014, 00:22

... limita- tion to the main root growth by shortening its length to the depth of the container and preventing the development of re- placement taproots. The confining of lateral roots in the con- tainer ... were then calculated: altitude-slope (the regression slope of Log 10 a on Log 10 µ) and pathlength-slope (the regression slope of Log 10 p e on Log 10 µ). High valu...

Ngày tải lên: 08/08/2014, 00:22

... thoroughly cleaned off the test pieces that have been again conditioned and weighed to determine the final conditioned mass. 2.4. Determination of the dry mass loss The dry mass of the test pieces and the relative ... a high level of biodegradation. The best protection system seems to be the combination of treating the surface and painting the edges of the pane...

Ngày tải lên: 08/08/2014, 01:21

... height, i.e. the distance from the tip to the lower border of the rib meristem measured along the shoot axis, ranged from 0.07 to 0.10 mm. The apex showed a zonation typical of the class Coniferopsida. 3.2. ... the PAS reaction [Figs. 2(8A) and 2(8B)]. In the material collected on 28th of January the pith cells at the base of the embryonic shoot and some pith...

Ngày tải lên: 08/08/2014, 01:21