Báo cáo lâm nghiệp: "Radial distribution of sap flux density in trunks of a mature beech stand" pot

... M., Adiku S., Kakubari Y., In uences of environmental factors on the radial pro- file of sap flux density in Fagus cr enata growing at different el- evations in the Naeba Mountains, Japan, Tree Physiol. ... were probably intercepting enough light or had an above- average leaf area/basal area ratio. Vincke et al. [27] found that Ann. For. Sci. 64 (2007) 431–438 Available online a...

Ngày tải lên: 07/08/2014, 16:21

... between radial growth of asymptomatic and symptomatic trees. 294 A. Solla et al. swelling. It has been reported that the disappearance of A. alba from Alpine stands in Italy may be partially caused ... ha –1 ) 716 584 595 A. alba average height (m) 21.0 22.3 22.9 A. alba basal area (m 2 ha –1 ) 47.8 66.4 58.1 Fagus sylvatica basal area (m 2 ha –1 ) 3.6 4.8 2.8 Pinus sylvestris bas...

Ngày tải lên: 08/08/2014, 00:22

... lower in this region. Spatial analyses of surveyed infestations Despite the low number of sample data, pattern of spatial continuity could be observed for each investigated species and underlaying ... information influenced by mi- gration of beetles. CONCLUSIONS I. typographus remained dominant species on the majority of sites having high intensity of tree infes- tation mainl...

Ngày tải lên: 07/08/2014, 03:22

... formation of mineral inclusions is induced or increases when the main functions of the woody tissues shift from transport and storage of water, minerals and assimilates, as in sapwood and earlywood, ... contained measurable amounts of mineral inclusions which were quantified using image analysis. Based on the variations of mineral content observed between trees and within and betwe...

Ngày tải lên: 07/08/2014, 16:20

... (on average 0.10 g cm −3 , Tab. II) and constant radially. 3.5. Analysis of variation of ring and density components An analysis of variance was made on the ring and density components using ... necessity in many cases of cross-examination with anatomical data, overall the density profiles obtained for the cork oak (Fig. 1a) showed that there was a trend for the decrease in...

Ngày tải lên: 07/08/2014, 16:20

... common Hopea acuminata Merr. Manggachapui Manggachapui * ³ * Scattered Shorea palosapis (Blco.) Merr. Mayapis Philippine Mahogany - white lauan ** ** ** ** Common Shorea assamica Dyer Manggasinoro Manggasinoro ... Especially some of the very rare species can be assumed to be remnants of the former forest of the coastal plain. Parashorea malaanonan, Shorea palosapis, Shorea polysperma,...

Ngày tải lên: 08/08/2014, 00:22

... drainage of the water in excess in the soil, the radial growth of the oak trees was greatly increased (about +20% of basal area incre- ment), at least in the most waterlogged ... oaks available in the undrained parts of the experimental plot. The ’Molinia’ site This site has a surface area of 2 ha. The stand is a severely degraded...

Ngày tải lên: 08/08/2014, 18:21

... stand age and proportion of salvage cutting in actual timber stock. Subsequently, using available data from forest management plans and records of salvage cutting, scores for critical damage ... u- ence of cardinal, ordinal and binomial explanatory variables (Table 1) on critical forest damage occur- rence. Deviance residuals and Pearson χ 2 residuals were calculated to check the...

Ngày tải lên: 07/08/2014, 10:21

... index 'H' and abundance of species (number of species) in plant communities depending on the age and category of areas in the Szczakowa sand mine cast Age of areas (years) Areas left ... 554–565 Opencast mines as a post-mining landscape are ex- amples of large-scale land destruction. According to the majority of international laws, all surface-mined lands, wheth...

Ngày tải lên: 07/08/2014, 10:22

... China China China China Canada China China A1 A2 A3 A4 A5 A6 A7 A8 A9 A1 0 Jianadayang (Gu’an) Oumeiyang-107 Liaoheyang Langfang-2 Gaiyang Liaoningyang (Fengning) Liaoningyang (Dalian) Liaoningyang (Gu’an) Jianganyang Oumeiyang-13 P. ... China China China China China T1 T2 T3 T4 T5 T6 T7 Xiaoyeyang-328 Qinghaiqingyang-107 Wutaiqingyang-77 BeiJingqingyang Maoguoyang-309 Zhongqing-10...

Ngày tải lên: 07/08/2014, 16:20