Báo cáo lâm nghiệp:"Decline in relative growth rate of 3 juvenile radiata pine clones subjected to varying competition levels in Canterbury, New Zealand" pptx

... B.B., Modelling growth responses of juvenile radiata pine (Pinus radiata D. Don) clones subjected to different weed competition levels in Canterbury, New Zealand, Ph.D. thesis, University of Canterbury ... for relative growth rate decline of juvenile trees 589 LWR changes during the same period (year 2 3) increased with increasing competition in cl...

Ngày tải lên: 08/08/2014, 01:21

... growth rate to a linear nitrate dosage, as to PFR, through adaptation of the size of the apex, casu quo of the vascular sys- tem. The increase in size of the apex of plants, ... 2. 67 03 8W Wageningen, The Netherlands Introduction The growth of leaves and internodes on a branch of poplar, grown under constant conditions, proceeds...

Ngày tải lên: 09/08/2014, 04:20

... [19, 33 ] indicate that Aleppo pine has low levels of shoot dormancy throughout the hardening season and is capable of sustaining relatively high photosynthetic rates and, hence, a capacity to grow. ... containing 30 seedlings per stocklot in a row plot (n = 90 seedlings per stocklot and per site). Site preparation (removal of pre- existing natural vegetation and 30 × 30 ×...

Ngày tải lên: 07/08/2014, 16:21

... biomass investment in branches in low light. However, in our study, there was an increase in the fractional investment in needles with increasing Q int in the fertile site, and no effect of Q int in the ... m –2 d –1 ) of Tõravere Actino- metric Station, and a conversion factor of 1.92 mol/MJ [ 53] were used to transform the values of I sum to Q int according t...

Ngày tải lên: 08/08/2014, 01:21

... referring to pointer years based on 75% of the total 64 samples and begin- ning with 1921 as the initial year of rainfall obser- vation (table II). Although the common growth ... of pointer years are related to spring precipita- tion and to June temperature. In addition, a preliminary approach is reported to define some anatom- ical...

Ngày tải lên: 08/08/2014, 18:21

... 2.80 73 2.7 037 2.5 039 –0 .38 86 – 13 Birch 0.5662 0.88 43 1.2885 1.7206 1.6784 2.48 13 2 .38 16 2.5120 2.4027 1. 836 5 32 4 Total per ha 13. 338 5 17.6828 21.8056 25.7445 24 .30 20 31 .6849 33 .4 630 36 .7560 39 .30 91 ... highest relative increase in the growing stock was noted in beech, viz from the initial value of 7.5 m 3 /ha in 1961 to 140.6 m 3 /ha (28% of...

Ngày tải lên: 07/08/2014, 03:22

... Ul- meto-Fraxinetum carpineum, Saliceto-Alnetum and Carpineto-Quercetum acerosum. As to the shrub and herb stratum, a great variety of species occurs there. In Ulmeto-Fraxinetum carpineum, ... interval of about two months, from the end of February to the beginning of November. One trap- ping operation took three nights. Caught small mammals were then identified in a labora...

Ngày tải lên: 07/08/2014, 03:22

... division of soils according to values of soil reaction into particular buffer zones, soil in a spruce stand and in mixed stands is included into an exchangeable zone (aluminium zone of buffering). In ... stands 2.7 3. 1 3. 3 3. 2 4.7 4 .3 4.5 3. 3 4.1 3. 2 2.7 3. 3 2.0 3. 0 4.0 5.0 6.0 Spruce Spruce with beech Larch with beech Beech pH (KCl) L F H Ah 4.2 4.8 4.7 4.9 22...

Ngày tải lên: 07/08/2014, 03:22

... ± 14.45 Hanušovice H 3. 90 ± 0.25 3. 29 ± 0 .38 60.44 ± 34 .91 938 .00 ± 31 6.27 6.94 ± 3. 38 Ae/Ep 3. 50 ± 0 .33 3. 07 ± 0. 23 14. 43 ± 14.85 160.71 ± 55.49 8.19 ± 5.91 Javorník H 3. 53 ± 0.16 2.76 ± 0.10 ... 1.50 114.50 ± 3. 50 23. 50 ± 1.50 Hanušovice H 3. 36 ± 2.96 94.71 ± 55.06 194. 43 ± 108.56 177.00 ± 68.52 Ae/Ep 8.50 ± 3. 49 27.82 ± 13. 35 114.18 ± 33 .45 26.27 ± 8. 13...

Ngày tải lên: 07/08/2014, 10:21

... The usage of 4 m 2 sampling points instead of 1 m 2 for the canopy structural variables by includ- ing the three sampling points to the South of a given point im- proved the correlations in all ... short and of moderate intensity so they are used in photosynthe- sis very efficiently [35 , 49], positively in uencing survival and performance of understory plants [10 ,36 ]. But su...

Ngày tải lên: 07/08/2014, 16:20