Báo cáo lâm nghiệp:" Dynamics of litterfall in a chronosequence of Douglas-fir (Pseudotsuga menziesii Franco) stands in the Beaujolais mounts (France)" potx

... past Multifunctional forestry practices as a land use strategy to meet increasing private and public demands in modern societies F. S Zurich, Switzerland ABSTRACT: e present distribution ... it has integrated increasing societal de- mands into current management practices. To assess the present and future options in management of forests,...

Ngày tải lên: 07/08/2014, 03:22

... differences in the root system development and health condition were found either between the trees of identical height from self-seeding and from planting in the region of Krušné hory Mts. and in the ... 452–461 JOURNAL OF FOREST SCIENCE, 53, 2007 (10): 452–461 Root system development and health condition of sycamore maple (Acer...

Ngày tải lên: 07/08/2014, 04:20

... periodically. e utilization of productive growth space of the virgin forest by particular tree species and the share of the tree species in the total crown canopy in tree layers were calculated according ... mechanism, the trees of the previous generation are dying off, including fir. Dynamics of diameter structure in natural forest To exp...

Ngày tải lên: 07/08/2014, 10:22

... presents results of research focused on the development of natural regeneration of beech stands in the National Natural Reserve Voděradské bučiny, based on information acquired in regeneration plots ... R J., Z D. (2009): Natural regen- eration of senescent even-aged beech (Fagus sylvatica L.) stands under the conditions of Central Bohemia. Jo...

Ngày tải lên: 07/08/2014, 10:22

... 10.1051/forest:2007005 Original article Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation management ... biomass allocation and leaf carbon assimilation was investigated in two plantations (1- and 2-year-old) established in previously f...

Ngày tải lên: 07/08/2014, 16:20

... 2005 DOI: 10.1051/forest:2005008 Original article Managing diameter growth and natural pruning of Parana pine, Araucaria angustifolia (Bert.) O Ktze., to produce high value timber Leif NUTTO a , Peter ... present work was to analyse diameter growth and the relationship of natural pruning and various morphological characteristics of Para...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2005024 Original article Leaf and whole-plant water relations of the Patagonian conifer Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri: implications on its drought resistance capacity Javier ... Pastorino M.J., Genetic variation and reproduction system of Aus- trocedrus chilensis (D. Don) florin et Boutelje, a cy...

Ngày tải lên: 08/08/2014, 00:21

... amount of direct sun- light enhances the growth of P. abies seedlings in subalpine environments, the timing of exposure to direct sunlight is less important. The pathways of influence of direct ... treatment). Like the other seedlings, these seedlings were either potted (32 seedlings) or outside pots (8 seed- lings). However, we did not include these...

Ngày tải lên: 08/08/2014, 00:22

... sativa in the Castelli Romani Park, due to the favourable climatic and soil conditions for the species. Although the intensive exploi- tation of this area, the analysed coppice showed the great capac- ity ... indicator of potential productivity in response to changing factor [23, 25, 26, 42]. The analysis of the physiological traits trend underlined the impo...

Ngày tải lên: 08/08/2014, 00:22

... late winter to early summer, and eat foliage, shoots and acorns of oaks in summer and autumn [20]. We have carried out two different studies in these rangelands to assess the effect of post-fire natural and ... Mediterranean oaks with contrasting leaf habit after a wildfire Josep Maria E * , Abdessamad H ,JavierR Centre de Recerca Ecològica i...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest: 2002068 Original article Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain Marc Palahí a *, Timo Pukkala b , Jari Miina c and ... authors, on individual- tree growth models for Scots pine in Spain. Scots pine in Spain is a species of great economic, ecological and social impor-...

Ngày tải lên: 08/08/2014, 01:21

... scat- tered [12]. In this study nitrogen (N) , phosphorus (P) and potassium (K) concentrations (g/kg) in mature and fresh-litter leaves and absolute and proportional N and P resorption leaves of J. ... respect to absolute and proportional N concentrations and N concentration of mature leaves. For example, there was a significant and negative cor- relation between...

Ngày tải lên: 08/08/2014, 01:21

... 10.1051/forest:2003041 Original article Dynamics of litterfall in a chronosequence of Douglas-fir (Pseudotsuga menziesii Franco) stands in the Beaujolais mounts (France) Jacques RANGER*, Frédéric GERARD, Monika LINDEMANN, ... total litterfall in the Douglas-fir stands. 478 J. Ranger et al. stands, and during 6 years in the 60-year-old st...

Ngày tải lên: 08/08/2014, 01:21

... even in the absence of fire. ECOPHYSIOLOGICAL ATTRIBUTES OF EASTERN OAK SPECIES The studies reviewed in the previous sec- tions indicate that eastern oak species have expanded ... on the gently rolling till plains of Ohio and Indi- ana, and with Tilia americana in south- western Wisconsin, northwestern Illinois, northeastern lowa...

Ngày tải lên: 08/08/2014, 18:21

... the highest value occurring in clone 11-11 (0.8 g-MJ- 1) and the lowest in 111-5 (0.4 g’ MJ- 1 ). ). Dynamics of light interception, leaf area and biomass production in ... produc- tion during the establishment year was similar to that of light interception and LAI; the average tree of hybrid clone 11- 11 produced a total b...

Ngày tải lên: 09/08/2014, 04:20