Báo cáo lâm nghiệp: "Interactive effects of phosphorus and light availability on early growth of maritime pine seedlings" pptx

... vertical and horizontal bar indi- cates the standard error of the mean. Effects of phosphorus and light on early growth of maritime pine 577 density (PPFD) at the top of the seedlings was 120–180 and ... T X T N +() 2 T b – ∑ = Effects of phosphorus and light on early growth of maritime pine 581 4. DISCUSSION Our results reveal the occurre...

Ngày tải lên: 08/08/2014, 00:22

... limited and 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 ... Zeaxanthin and heat dissipation of excess light energy in Nerium oleander exposed to a combination of high light and excess light energy, Plant Phy- siol. 87 (19...

Ngày tải lên: 08/08/2014, 00:22

... pol- lution on forests, 4th ed., United Nations Economic Commission Impact of P. quercina on mature oaks 671 for Europe Convention on Long-range Transboundary Air Pollution: International Co-operative ... exception was the concentration of P and the ratio between P and N, which were somewhat low in most trees. The low concentration of P in leaves, the significant difference in t...

Ngày tải lên: 07/08/2014, 16:20

... test). RESULTS AND DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their ... flooding and non-flooding condition was Table 1. e effect of long-term flooding and Phytophthora alni infection on the development of black alder saplings Treatment per...

Ngày tải lên: 07/08/2014, 10:21

... on the amount of beech seedlings (principal woody plant) in natural regeneration. A significant influ- ence of two principal climatic variables (moisture and light conditions) on the growth and ... open-canopy conditions was Table 4. Results of Pearson’s correlation describing a relation between the number of beech, hornbeam, fir, oak, linden and sycamore seedlings and...

Ngày tải lên: 07/08/2014, 10:22

... latent pathogen of red pine seedlings, New Phytol. 149 (2001) 531–538. [188] Sury R. von, Fluckiger W., Effects of air pollution and water stress on leaf blight and twig cankers of London planes (Platanus ... and stands under drought: a review of ecophysiological responses, adaptation processes and long-term consequences, Ann. Sci. For. 63 (2006) 623–642. [30] Britton K.O.,...

Ngày tải lên: 07/08/2014, 16:20

... fertilization on growth of Douglas-fir: relative contribution of foliage quantity and efficiency, Can. J. For. Res. 13 (1983) 167–175. [10] Brix H., Ebell L.F., Effects of nitrogen fertilization on growth, ... species. Of the few studies on conifers, none have included direct quantification of Rubisco. Previously we reported relationships among addition of P fertilise...

Ngày tải lên: 08/08/2014, 00:21

... ways of calculating measures of diversity. Furthermore, any diversity determination is relative to the con- ditions of the area concerned. Considering the growing condi- tions of central and southern ... implementation of direct and indirect production uses for these stands (silvo- pastoral uses, recreation, environmental preservation), there is an urgent need to study and man...

Ngày tải lên: 08/08/2014, 01:22

... increase strongly risks of degradation of water potential and C and N acquisition on the site of installation, and compromise success- ful plantation establishment in the field. REFERENCES [1] Andersen ... beginning of root regeneration (day 13), and on days 27 and 41. The significance of the effects of lifting and time and their interaction are indicated for...

Ngày tải lên: 08/08/2014, 01:22

... 1988; Chaves and Pereira, 1992; Tschaplinski et al, 1993; Tyree and Alexander, 1993). Under drought conditions, osmotic adjust- ment on the one hand and growth and metabolic ... carbon supply to the dif- ferent plant components and increased organic solute concentrations. However, elevated CO 2 concentrations often lead to reduced total mineral...

Ngày tải lên: 08/08/2014, 18:21