Báo cáo lâm nghiệp: "The effects of flooding and Phytophthora alni infection on black alder" pps

... 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...

Ngày tải lên: 07/08/2014, 10:21

... 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 the number of fructifying ... abundance of individuals older than one year was also significantly dependent on the stand density and LAI. DISCUSSION e irregular fructification of beech trees may cause...

Ngày tải lên: 07/08/2014, 10:22

... 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 ... under exposed and shaded conditions, were associated with reductions in both stomatal (G s ) and mesophyll conductance (G m ), and an increase in the proportion of ele...

Ngày tải lên: 08/08/2014, 00:22

... 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 ... content of whole seedlings and of old roots (Fig. 4 and Tab. II). In contrast, lifting had no effect on N content of needles and old stem. The N content of ne...

Ngày tải lên: 08/08/2014, 01:22

... between 350 and 700 μmol mol -1 CO 2 concentra- tions under well-watered conditions (fig 3). The lack of a stimulation of A reflects a long- term downward acclimation of photosyn- thetic ... carbon supply to the dif- ferent plant components and increased organic solute concentrations. However, elevated CO 2 concentrations often lead to red...

Ngày tải lên: 08/08/2014, 18:21

... Research and Extension Center (SFREC), 30 km northeast of Marysville, at an elevation of approximately 200 m. Directly sown acorns were placed on their sides and positioned ... without the assistance and cooperation of a number of individuals and organizations. The staff at the California Department of Forestry LA Moran Reforestation Cent...

Ngày tải lên: 08/08/2014, 18:21

... regen- eration. Assimilation rate measurements and root observations (number of growing roots and root elongation) were made just before trans- planting (day 0) and then weekly ... evolu- tion of A and gs, the changes in Awere mainly due to an alteration of mesophyll photosynthetic capacity. The effects of transplanting stress on photosynt...

Ngày tải lên: 09/08/2014, 04:20

... UK Department of the Environment, the Commis- sion of the European Communities, the NE Forest Experiment Station of the USDA Forest Service and the US Environmental Protection Agency, ... autoclaved and the total conductivity (C-) of the solution determined. Based on the assumption that the rate of leakage of electro- lytes from a detached...

Ngày tải lên: 09/08/2014, 04:20

... Marcelis L.F.M., Harbinson J., Lambers H., Contrasting effects of N and P deprivation on the regulation of photosynthesis in tomato plants in relation to feed- back limitation, J. Exp. Bot. 54 (2003) ... environment, a field and laboratory manual, Chapman and Hall, London, 1993, pp. 207– 219. [20] Fredeen A.L., Rao I.M., Terry N., Influence of phosphorus nutri- tion on growt...

Ngày tải lên: 08/08/2014, 00:22