Báo cáo lâm nghiệp: "Storage of non-dormant hardwood seeds" pdf

... obtained after 1 yr of storage with non-dormant stones. Conclusion Today, the ability to supply, at any time, non-dormant seeds, ready to germinate, after storage periods of up to 5 ... silvatica in the seed plant of the French Office National des For6ts with high hopes of yielding sub- stantial improvement in production of beech seedlin d...

Ngày tải lên: 09/08/2014, 04:20

... tissues made up above 95% of the biomass. The greatest reservoir of carbon was the tree stem, especially for that of the conifers. In the case of clear-cutting, the majority of carbon is moved out ... stel- laris) in the NF, 12 of C. kawakamii in the CK, 11 of O. xylocarpa in the OX, 12 of F. hodginsii in the FH, and 12 of Chinese fir in the CF were felled. The selected harv...

Ngày tải lên: 08/08/2014, 00:22

... of internal water status can cause severe injury to roots (Fig. 4). The reduction of root water con- tent as a consequence of desiccation of the root system [9] is accompanied by a decrease of ... day of storage at 4 ºC produced the death of 40% of plants planted in wet soils (Fig. 6C) and after 15 days at 4 ºC or after 8 days at 10 ºC only 20% of BR seedlings survived. The...

Ngày tải lên: 08/08/2014, 01:22

... seedlings of Hevea (Selmar et al., 1988). Lastly, carbon can be exported by phloem loading and translocated as sorbi- tol. The modelling of the distribution of carbon in ... stress. Inhibition of photosynthe- sis of intact chloroplasts, protoplasts and leaf slices at high osmotic potential. Planta 153, 416-422 Matile P. (1987) The sap of pla...

Ngày tải lên: 09/08/2014, 04:20

... 0.666 Nsp – number of species, N – number of specimens, H S – Shannon-Wiener index of diversity, E S – equatibility, H B – Brillouin index of diversity, E B – equatibility Indexes of diversity ... single habitats of the 7 th AVZ occur in the field of the 4 th and 5 th AVZ. From the view of hydricity (q-axis), habitats of the 7 th AVZ are on the same level as those...

Ngày tải lên: 07/08/2014, 03:22

... characteristics were as- sessed, such as: type of bark, degree of pubescence of leaves and stems, and presence of a “tuft” in the angles of leaf veins. e degree of pubescence was determined on a 5-point ... al. 1963). One of the distinctive and sufficiently stable properties of the hybrids is a number of pairs of leaf veins – 9–10. According to data of K (196...

Ngày tải lên: 07/08/2014, 03:22

... respect to the development of commercial forest production and in terms of the implementation of the strategy of sustainable life and application of principles of near-natural forest management ... effective use of available production factors – re- sources. e investigation of production functions is one of the basic tasks of economics as a scientific discipline, name...

Ngày tải lên: 07/08/2014, 03:22

... establishing of digital pho- Supported by the Scientific Grant Agency VEGA of the Ministry of Education of Slovak Republic and Slovak Academy of Sciences, Project No. 1/3525/06. Utilization of digital ... ha, and new mapping on 105,600 ha of the forest land. Expected advance of the digital photogrammetric mapping technology secured the processing of 70–80% of the mappe...

Ngày tải lên: 07/08/2014, 03:22

... of the percentage of resin hardening, intentional control of the coefficient of compressibility, effects of veneer moisture on heat passage and coefficient of com- pressibility etc. e extent of ... (A–t). Determination of the percentage of PF resin hardening e aim of studying the character of PF resins in the field of UV spectrum was to determine the amount of the ins...

Ngày tải lên: 07/08/2014, 03:22

... (2003). Supported by the Scientific Grant Agency of the Ministry of Education of Slovakia and Slovak Academy of Sciences VEGA, Project No. 2/0045/08. Amounts of throughfall and lysimetric water in a ... level of significance of differences between the two studied plots (t-characteristic 3.3–3.8 is highly significant at α = 0.05). e influence of the cutting intervention on the...

Ngày tải lên: 07/08/2014, 03:22