Báo cáo lâm nghiệp: "The effects of stock type and radicle pruning on blue oak morphology and field performance" docx

... survival of the three treat- ments, averaged over stock types, varied by 1% or less (table II). Short note The effects of stock type and radicle pruning on blue oak morphology ... ten rows of nine seedlings each. Each row contained one randomly positioned seedling from each of the nine treatment combi- nations (three stock types...

Ngày tải lên: 08/08/2014, 18:21

... 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

... 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

... 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 n...

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

... 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

... 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 ... proportion of photons partitioned to PSII and I o is the incident irradiance. The proportion of electrons that are dissipated through processes other than photosyntheti...

Ngày tải lên: 08/08/2014, 00:22

... Large area of such stands along with compound of biotic and abiotic stressors (air pollu- tion, degradation and compaction of soil, nutrients exhaustion, increased activity of pests and patho- gens) ... position on slope and on stressed versus unstressed trees; – analysis of I. typographus attacks rate and speed of boring on more stressed versus less stressed t...

Ngày tải lên: 07/08/2014, 03:22