Báo cáo lâm nghiệp: "Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L ) Karsten) from two regions of France" doc

... (200 4) 525–535 © INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004047 Original article Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L. ) Karsten) ... January 200 4) Abstract – Statistical relationships between branch basal diameter of living whorls, stem size (height and diamet...

Ngày tải lên: 08/08/2014, 01:22

... F-  199 2). Norway spruce (Picea abies [L.] Karst .) is the main edificator and stand-forming tree species in mountain spruces stands of Central Europe. e timberline is running quite near ... natural spruce stand (NSS), semi-natural spruce stand (SNSS) and allochthonous spruce stand (ASS) in conditions of the spruce forest altitudinal zone (1,1...

Ngày tải lên: 07/08/2014, 03:22

... Other species* N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) N sp PD sp ( %) D ( %) Deblín D 322 1.07 7 9 159 ... damage and dominance for Pinus sylvestris and Populus tremula in mixed stands of these two species in Lithuania. D et al...

Ngày tải lên: 07/08/2014, 10:21

... efficiency was determined on 1-year-old twigs from branches collected with a pruning-scissors in the morning (between 7 and 8 h, solar time) from mature trees. The branches were enclosed in black airtight ... diameter of the stem segments used as indicated by the strong coefficients of determination obtained for every indi- vidual. The analysis of variance and the test...

Ngày tải lên: 08/08/2014, 01:22

... in 2000 Seasonal increment of basal area in spruce represented over 80% of the entire stand basal area increment (as indicated by scaling the data up to the stand level). Increment in aspen and alder, ... (lines) and precipitation (bars, data from Central Forest Nature Reserve) for two con- trasting years of 1999 (a) and 2000 (b) with the schematic drawing of ver...

Ngày tải lên: 08/08/2014, 00:22

... plate (T rp ) in spruce trees growing in waterlogged sites (b), thickness across the plate (T rp ) in spruce trees growing in well-drained sites (c) (a) (a) W rp R rp PR rp (b) (c) T rp T rp J. ... mean value of W rp was 500 cm in trees growing in wa- terlogged sites, but it was only 419 cm in Norway spruce trees growing in well-drained sites. Inter- estin...

Ngày tải lên: 07/08/2014, 10:22

... RW (g) Leaf area LA (cm 2 ) Leaf area chlorotic %LA_Ch ( %) Root length RL (cm) Root diameter RD (mm) Root Ψ tips RT ( #) (MPa) [N] ( %) [P] ( %) [K] ( %) N (mg) P (mg) K (mg) Starch, Stch ( %) Soluble sugars ... temperature), which means that larger seedlings survived better in some of the worst (lower survival) sites. In the sandy and warmest site of...

Ngày tải lên: 07/08/2014, 16:21

... (winter) 5 Apr. 2000 (winter) 14 Jun. 2000 (spring) 25 Jul. 2000 (summer) Ainvelle 15 10 a 10 Mersuay 47 8 b 10 c 20 (1 0) d 20 (1 0) 20 (1 0) Filain 39 8 20 (1 1) 20 (1 1) 21 (1 1) a Including ... three oaks in Filain and two in Ainvelle. In these cases Armillaria was present on a minority of roots, inducing superficial lesions, the root infec- tion index w...

Ngày tải lên: 08/08/2014, 01:21

... fir (FraF) 49 509 2760 1985 France pine (FraP) 35 527 2690 1977 North Finland pine (NFinP) 52 526 1280 1916 South Finland pine (SFinP) 54 597 2070 1954 Intra-ring density and anatomy in conifers ... of the rings by a factor 2. For instance this number vary from 64 up to 117 tracheids for a narrow ring (North Finland pine) and from 131 up to 240 for a wider ring (South Finland pine...

Ngày tải lên: 08/08/2014, 01:22

... thickness (µm) and leaf density (g cm –3 ) in leaves of Dicorynia guianensis grown in understorey and in clearing (results of multiple linear regression analyses 1 ). Dependent variable Independent ... three-fold increase in leaf thickness, a five-fold increase in stomatal den- sity and a 4.5-fold increase in LMA (Fig. 2). In general, the range of variatio...

Ngày tải lên: 08/08/2014, 00:22