Báo cáo lâm nghiệp:" How to relate the standing tree shape to internal wood characteristics: Proposal of an experimental method applied to poplar trees" pptx

... analysis for tree FV1: (A) skeleton of the standing tree; (B) reconstruction of the tree shape and of the sampled discs; (C) disc measurements of tension wood; loca- tion of the pith (M), the disc ... occurrence of compres- sion wood. The objective of this paper is to present the method devel- oped in our laboratory to measure the geometry of...

Ngày tải lên: 08/08/2014, 01:21

... larval stage, together with the ad- vantages of such. MATERIAL AND METHODS To obtain D. schmidtii larvae it is recommended to simply beat the bottom branches of the food- plant up to 3 m above ... possibilities. (C) Degree of isolation of the population present on the site in relation to the natural range of the species. (D) Global assessment of the value...

Ngày tải lên: 07/08/2014, 10:21

... (RGR) and the age of the organ; and 2) are independent of irradi- ance. Consequently, the absolute growth rate of such a branch cannot adapt to irra- diance via these ... correspondence be- tween the development of the vascular system of poplar, the growth of the organs and the development of absolute growth rate of the plant....

Ngày tải lên: 09/08/2014, 04:20

... the construction and maintenance of forest roads constitute there nearly one third of the total cost of harvested timber. In the Carpathian region of Ukraine, the network of forest roads is ... lower than in the countries of West and Central Europe. Forest areas with the density of roads more than 10 mha –1 constitute less than 2% of the total forest area....

Ngày tải lên: 07/08/2014, 03:22

... between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the method of estab- lishment of the stands and degree ... over to the open space from the neighbouring stands. e correlation between the extent of the dam- age and method of plantation establishment an...

Ngày tải lên: 07/08/2014, 03:22

... of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... concentration of pheasants, feed- ing supply – form of feed) on the diversity of the community of small terrestrial mammals and on the abundance and viability of...

Ngày tải lên: 07/08/2014, 03:22

... content of their avail- able forms in the soil. Knowing the dosage of fertil- izer applied to the soil and the amount of marked nutrient absorbed by plants, one can determine the value of available ... ect the level of experimental crop yield. Be- sides, neither the content of easily available mineral forms of N nor the total quantities of the N frac...

Ngày tải lên: 07/08/2014, 10:21

... values of both topsoil and underlying horizon nearly equal (69% and 72%, respectively). On the other hand, the difference be- tween topsoil layer and deeper one seems to be obvi- ous either in ... farmland. Plant and Soil, 168/169: 103–110. AUGUSTO L., RANGER J., BINKLEY D., ROTHE A., 2002. Impact of several common tree species of European tem- perate forests on soil fertility...

Ngày tải lên: 07/08/2014, 10:21

... comments and improved the quality of the manuscript. anks also to Dr. S K, who gave us valuable comments and recommenda- tions on early versions of the manuscript and to A F and ... foliage (usually the end of May up to the end of June and the beginning of July); summer feeders (SF) – feed- ing on mature leaves at the beginning of July to...

Ngày tải lên: 07/08/2014, 10:22

... in the brackets represent the phenotype presence (1)/absence (0) of FaL757, and the second number that of F19Lg). The percentages of the total inertia provided by the first two dimensions are shown ... were not included in the analysis of variance). When analysing balanced data, this procedure allows determination of the amount of total vari- ation explained by each...

Ngày tải lên: 07/08/2014, 16:20