Báo cáo lâm nghiệp: " Growth of wild cherry (Prunus avium L.) in a mixture with other species in a demonstration forest" ppsx

... that the fine root ratio is stable at least in the first growing period of new plantation and the best growing plants have about the same fine root ratio as the poorly growing ones. Even the regression ... explaining 92% of the relationship. An adequate proportion of fine roots (thinner than 2 mm) in the root system is another important parameter of p...

Ngày tải lên: 07/08/2014, 03:22

... only species showing economical importance, the ANFI sub- sumed maple species. A generally small amount of maple in the species composition had been expected and is plausible because of intolerance ... for mortality with increasing dbh for the other tree species, result- ing in large trees never dying. erefore the results of the long term simulations became unre...

Ngày tải lên: 07/08/2014, 03:22

... stand-forming capacity of wild cherry as well as its capacity to keep its position in a stand. MATERIAL AND METHODS A large stand with wild cherry trees as a stand- forming species in the area of Demonstration ... broadleaves such as Quercus robur, Quercus petraea, Tilia sp. and Carpinus betulus (P 2007). Growth of wild cherry (Prunus avium L...

Ngày tải lên: 07/08/2014, 03:22

... international IUFRO experiment dealing with the ra - tionalization of young spruce stand tending (A 1977). One part of this series, Machov CZ 14 experi- Effect of stand segmentation on growth and ... values (mean and standard deviation) of stand volume (open triangles) and volume of mean stem (grey circles) of spruce stands in Machov experiment at the...

Ngày tải lên: 07/08/2014, 03:22

... Hydrotechnical meliorations. Drainage channels. Praha, ČSNI 1993. (in Czech) Drainage (1973): Principles and applications. Part II – eo- ries of drainage and watershed runoff. Wageningen, Interna- tional ... based on the expansion and shrinkage of variable source areas and consequent changes in a drainage network during a discharge event. e runoff investigation...

Ngày tải lên: 07/08/2014, 03:22

... in the framework of long-term programmes using the clonal propagation (J et al. 1994); their re- Evaluation of the growth and health status of selected clone mixtures in comparison with ... exposed locations where their observation continues and their growth and health status are compared with the ordinary planting stock of genera...

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

... to the low age of poplar plantation, the eval- uated clones were divided into two groups: – A. group of candidate clones yielding more than cultivar 'I-214' at the age of 6 years in ... clones) at the age of 6 years. Survival rate of 11 clones was 91 .6% of individuals and survival rate of only 2 clones was 83.3%. Trees in border rows der...

Ngày tải lên: 07/08/2014, 10:21

... determine the stability of spruce stands in the areas of threat to forest stability in the Beskid Śląski and Beskid Żywiecki Mts. in the light of their nutrition. In 2002 samples of soil and of ... Beskid Śląski Mts.; Beskid Żywiecki Mts.; Southern Poland 42 J. FOR. SCI., 54, 2008 (2): 41–48 VIII, Province 1 of the Beskid Śląs...

Ngày tải lên: 07/08/2014, 10:21

... (+)-3-carene:terpinolene (+)-α-pinene: (-)-β-pinene: (+)-3-carene:terpinolene (+)-α-pinene: (-)-β-pinene: (+)-3-carene:terpinolene (+)-α-pinene: (-)-β-pinene: (+)-3-carene:terpinolene (+)-α-pinene: (-)-β-pinene: ... SE eggs/female 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (+)-α-pinene (-)-β-pinene (+)-3-carene Terpinolene (+)-α-pinene: (-)-β-pinene: (+)-3-carene:terpinolene (+)-α-pinene: (-)-β-pine...

Ngày tải lên: 07/08/2014, 16:20

... www.afs-journal.org DOI: 10.1051/forest:2007030 Original article Parental participation in progeny and effective population sizes in experimental seed orchards of wild cherry Prunus avium L. (Batsch) Stéphanie M a,b,c,g, * , ... based on the seed crop, instead of the number of flowers led to observe a diminution of the effective size of 1.8, 3...

Ngày tải lên: 07/08/2014, 16:21

... trees in Southern and Northern Tragamón. Oak pollarding in 1806 affected the southernmost extreme of South- ern Tragamón, and the north-central area of Northern Trag- amón. On the other hand, oaks ... 300–399 and 400–499 years) and the mean distance between target trees and their nearest neighbours was calcu- lated within, and between, age classes. The null...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2005012 Original article Dendrochronology of pedunculate oak (Quercus robur L.) in an old -growth pollarded woodland in northern Spain: tree-ring growth responses to climate Vicente ROZAS a,b * a ... tree growth and cli- mate variables was investigated in Tragamón, an old -growth oak woodland in the Cantabrian lowlands,...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2004023 Original article Growth of a poplar short rotation coppice under elevated atmospheric CO 2 concentrations (EUROFACE) depends on fertilization and species Marion LIBERLOO a *, Birgit GIELEN a , Carlo ... specific leaf area (SLA), the area of these leaves was calculated. A regression analysis between basal area and total leaf ar...

Ngày tải lên: 08/08/2014, 01:21

... and benzyladenine during in vitro bud growth induc- tion of wild cherry (Prunus avium L.). Plant Growth Regul. 8, 325-333 Leroux B., Maldiney R., Miginiac E., Sos- sountzov ... Internal levels of plant growth regulators during in vitro culture of wild cherry (Prunus avium L.) P. Label 1 D. Cornu B. Sotta 2 E. Miginiac 1 IN...

Ngày tải lên: 09/08/2014, 04:20