Báo cáo lâm nghiệp: "Effects of seedling density on the growth of Corsican pine (Pinus nigra var maritima Melv ), Scots pine (Pinus sylvestris L ) and Douglas-fir (Pseudotsuga menziesii Franco) in containers" ppt

... growth of Corsican pine (Pinus nigra var. maritima Melv. ), Scots pine (Pinus sylvestris L. ) and Douglas-fir (Pseudotsuga menziesii Franco) in containers Richard Jinks a Bill Mason b a ... Instruments Ltd Llandrind-Wells, UK). 2.4. Experiment 4 The effects of cell volume and seedling den- sity on the growth of...

Ngày tải lên: 09/08/2014, 04:20

... kaempferi (Lindley) Car- rière) and Scots pine (Pinus sylvestris L. ) in a wide range of ecological and management conditions in the temperate cli- mate zone, and (ii) to propose a simple model to predict ... thin- ning correction. The variations of the G-extinction coefficient b is actually a combined effect of the variation of LAI-extinction coeffici...

Ngày tải lên: 08/08/2014, 01:22

... extremes in the progress of time. Unlike them we dealt with dividing the runoff into components using the analysis of hydrograph by separation its recession limb and determining only the runoff con- stituents ... (197 3): Principles and applications. Part II – eo- ries of drainage and watershed runoff. Wageningen, Interna- tional Institute of Land Reclamation and...

Ngày tải lên: 07/08/2014, 03:22

... body and eggs. K (198 8) mentions similar results in the increased consumption of food in the creation of a fat body in females of Lochmaea caprae (L. ) Differences of imagoes in the consumption ... N-NH 4 + (determined in the leach in 1% potassium sulphate solution), pH value (H 2 O, KCl) (Table 1). e C:N fluctuation could be caused by the un...

Ngày tải lên: 07/08/2014, 10:21

... another factor indicat- ing man-conditioned acidification of the soil profile. According to the classification of buffer zones, the spruce monoculture occurs predominantly in the aluminium zone, ... 199 7). As for the division of soils according to the values of soil reaction into particular buffer zones, soil under the broadleaved stand falls to the exchangeable z...

Ngày tải lên: 07/08/2014, 10:21

... roseolus showed the highest levels of Mn in their needles (Fig. 2f). For all inoculation treatments, the levels of Mn in needles were significantly lower in seedlings grown in p/pb than in p/v ... basidioma and the ease of application of this type of inoculum makes of it a method particularly well suited for large-scale inoculation of containerised seedlings i...

Ngày tải lên: 08/08/2014, 00:22

... rainfall values in the spring season, there is no correlation between the growth of the rings and the rainfall in any other season or the annual total. Figure 6 shows the relationship between these ... underlined the importance of climatic conditions operating on the tree seedlings during the first year of planting on the land. Fernández et al. [13] indic...

Ngày tải lên: 08/08/2014, 00:22

... as in the stands under pest control. The main cause of this collapse was probably the effect of cold and rainy weather on trees and bark beetles, as well as the increase Variable management and ... p < 0.00 1), especially during the culmination phase (1994–199 7). Even if the progradation phase started earlier in Poland, the real beginning of the ou...

Ngày tải lên: 08/08/2014, 00:22

... time, one of the following treat- ments was applied to the most distal offspring shoot of each labelled parent shoot (Fig. 1): (t. 1) clipping of the apex, including all folded leaves; (t. 2) clipping ... ( 1) position on the parent shoot of the most proximal offspring shoot, ( 2) diameter of the thickest offspring shoot, ( 3) length of the longest...

Ngày tải lên: 08/08/2014, 00:22

... been initiated under FL before the start of the experiment and, unlike seedlings growing under FL and LS, only a small portion of the leaves actually initiated their growth after the start of the ... photochemical quenching (q P ); (B) non- photochemical quenching (NPQ); (C) quantum yield of PS II (φ PS II ); and (D) electron transport rate (ETR). The symbols...

Ngày tải lên: 08/08/2014, 00:22