Báo cáo lâm nghiệp: "Element analysis of tree rings in pedunculate oak heartwood: an indicator of historical trends in the soil chemistry, related to atmospheric deposition" ppsx
Báo cáo lâm nghiệp: "Element analysis of tree rings in pedunculate oak heartwood: an indicator of historical trends in the soil chemistry, related to atmospheric deposition" ppsx
... in Ver- mont. Vt Agr Exp Sta, RR 53, Univ Vt, Burlington, VA, USA, 9 p Original article Element analysis of tree rings in pedunculate oak heartwood: an indicator of historical ... tree- ring analysis on the heartwood of pedunculate oak as an indi- cator of temporal trends in some chemical properties of the soil. We worked...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: "Paternity analysis of Populus nigra L. offspring in a Belgian plantation of native and exotic poplars" doc
... to mislabelling of the seedling. Microsatellite analysis of the remaining 12 SSR loci re- vealed 11 distinct genotypes in the 16 P. nigra candidate fa- thers in the total poplar stand (Tab. IV) and three ... dataset of the three isozymes and two DNA markers (WPMS09 and win3), no genes of P. deltoides were detected in the total offspring analysed. Isozyme analysis...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype" docx
... has to do with the fra- gility of the argan nut contained within the slightly cracked stone and weighing less 5 g in average [15] but rich in lipids and carbohydrates [15]. Therefore, in the ... [7, 10, 11]. In the present study, applying either GA or cold storage increased germination, decreased time to germination extend- ing germination period and reduced the numb...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: "Predicting balsam fir growth reduction caused by spruce budworm using large-scale historical records of defoliation" potx
... missing rings rarely occur in this part of the tree. Second, these diagnostic rings were identified on discs sampled lower down the tree and their dating allowed us to detect missing rings. The dating ... variables to the model. Then, to determine the variables that played a significant role in explaining the variation of ring width index and annual volume i...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Aboveground biomass relationships for mixed ash (Fraxinus excelsior L. and Ulmus glabra Hudson) stands in Eastern Prealps of Friuli Venezia Giulia (Italy)" pptx
... mm. The stand occupies an area of 2.4 ha and was partially used in the past as grassland. The forest is dominated by ash (Fraxinus excelsior L.) (number of trees = 77%) with the presence of wych ... and SEE denote respectively the coefficient of determination, the standard error for the coefficients a and b and the standard error of the estimate for 38 (ash) a...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "doubling atmospheric CO concentration on 2 matter distribution and CO exchange of 2 yr growth, dry 2 old sweet chestnut trees (Castanea sativa Mill.)" pptx
... After the end of July, 62% of the enriched plants ceased growth as compared with 37% of the controls. The early onset of yellowing and the stopped terminal bud growth indicates earlier ... for the C0 2- enriched plants (results not shown). The 28% increase in daily carbon exchange was in approximate agreement with the 43% increase...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp:" Foliar N and P resorption and nutrient levels along an elevational gradient in Juniperus oxycedrus L. subsp. " pot
... h, then weighed dry and then soil moisture was calculated on a volume basis [9]. The results of soil analysis were explained according to Bayraklý [7]. One and two-way analysis of variance (ANOVA) ... mesh prior to analysis. Because soil parameters changed very little during both sampling period soil samples belonging to both sampling period were pooled. 2.2. Methods...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "An integrated analysis of 33 Eucalyptus trials linking the onset of competition-induced tree growth suppression with management, physiographic and climatic factors" pptx
... clay in top 15 cm of soil 7 Sand % sand in top 15 cm of soil 8 Silt % silt in top 15 cm of soil 9 Oc % organic carbon in top 15 cm of soil Management related explanatory variables 10 Seedling Scored ... method of site preparation (burning versus not burning) and the interaction between these two factors were significantly related to the timing of tree gr...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: " Decay resistance in Dicorynia guianensis Amsh.: analysis of inter-tree and intra-tree variability and relations with wood colour" pptx
... Dicorynia guianensis. Using the calculation of the median mass loss rather than the mean in interpreting the results improves the reproducibility of the results, and reduces the impact of singular ... heartwood and at the base of the tree. 4.Decay resistance decreases from the outer to the inner heartwood. Variations from the base to the top of the...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: " A collection of functions to determine annual tree carbon increment via stem-analysis" pot
... contains fewer rings than the lower one. This means that it took the tree a number of years equal to the difference in number of rings to grow up from the lower cross-section level to the upper one ... variability of the density and C content estimates of wood of the sampled trees. The relative contribu- tion of the error to stem C pool or increme...
Ngày tải lên: 08/08/2014, 01:22