Báo cáo lâm nghiệp: "Estimating the sustainable harvesting and the stable diameter distribution of European beech with projection matrix models" pdf

... Supported by Grant Agency of the Slovak Republic, Project No. 2/4159/04. Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia) Ľ. D 1 , ... (3): 93–100 97 lings from the forest nursery planted in the substrate from the declining forest stand, 6 – spruce seedlings from the nurs...

Ngày tải lên: 07/08/2014, 03:22

... volume of the log in m 3 , h – length of the log in m, g 1/2 – cross-sectional area at ẵ length of the log in m 2 . Total volume of coarse woody debris was given as a sum of the volumes of standing ... 2010 (9): 397–405 Coarse woody debris carbon stocks in natural spruce forests of Babia hora K. M 1,2 , J. M 1,2 1 Department of Fo...

Ngày tải lên: 07/08/2014, 10:21

... concentrations during defence response in Nor- way spruce embryogenic cell suspension cultures induced by intracellular protein and wall prepara- tions from Sirococcus strobilinus mycelia. MATERIAL AND METHODS Plant ... embryo- genic cultures of Norway spruce (C) and in the cells elicited by mycelium protein fraction (PF) and mycelium wall frac- tion (W...

Ngày tải lên: 07/08/2014, 10:21

... primary productivity in ter- restrial ecosystems (J et al. 1999), N miner- Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China G. Q 1,2 , Q. ... is maintained at 20°C. For the given vegetation type of Changbai Mountain, soil C and N mineralization rate, potential mineralizable C (C 0 ) and potential ra...

Ngày tải lên: 07/08/2014, 10:21

... We present a projection matrix model to estimate the sustainable harvest rates and the stable diameter distributions of three qualities of European beech in the Spanish province of Navarre. Considering ... 10.1051/forest:2007037 Original article Estimating the sustainable harvesting and the stable diameter distribution of European beech with...

Ngày tải lên: 07/08/2014, 16:21

... carried out in the morning between 07 00 and 12 00 h in the forest understorey and between 07 00 and 10 00 h in the clearing to avoid a mid-day stomatal closure. During the A-PPFD responses, the mean ... structure and functional leaf traits in the tropical forest tree Dicorynia guianensis Amshoff (Caesalpiniaceae) Jean Christophe ROGGY a *...

Ngày tải lên: 08/08/2014, 00:22

... (2005) 585591 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005051 Original article Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.) Rozenn ... incorporation of cDMO as a indicator of organ sink strength in oak, that on the 2nd day, the apex is a stronger sink than the other organs [4]. We also l...

Ngày tải lên: 08/08/2014, 00:22

... article Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests Stefan ZERBE*, Petra WIRTH Institute of Ecology, Technical University Berlin, ... availability on plant invasions. 5.3. Reversibility and irreversibility of the plant invasions in pine forests According to Ellenberg [14], the natural...

Ngày tải lên: 08/08/2014, 00:22

... shoot is still insufficient. The aim of this study was to determine whether changes take place in the submicroscopic structure of the distal part of an embryonic Norway spruce shoot during winter dormancy ... (2003) 461466 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003039 Note Mid-winter ultrastructural changes in the vegetative embryonic shoot...

Ngày tải lên: 08/08/2014, 01:21

... saturation was calculated as the ratio between the sum of extractable amount of base cations and the total cation exchange capacity of a soil sample. Macronutrients in temperate forest trees 493 Figure ... article Macronutrients in tree stems and foliage: a comparative study of six temperate forest species planted at the same sites Anna...

Ngày tải lên: 08/08/2014, 01:22

... 525535 â 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) from ... relationships between branch basal diameter of living whorls, stem size (height and diameter at breast height) and stand parameters (stan...

Ngày tải lên: 08/08/2014, 01:22

... characteristics, the time since last thin- ning τ and the thinning intensity I were retained for this study. Thin- ning intensity I is defined in terms of basal area, being equal to the ratio of absolute ... since thinning increased (data not shown). Thus the influences of stand age, time since last thinning and intensity of last thinning on extinction coefficient b (relat...

Ngày tải lên: 08/08/2014, 01:22

... 81 Ann. For. Sci. 61 (2004) 8186 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003087 Original article Relationships between hydraulic traits and habitat preference for six Acer species occurring ... adapted for high water transport. In contrast, plants need to invest less in means of acquiring water for their growth in dry habitats, and therefore reduced...

Ngày tải lên: 08/08/2014, 01:22

... but Short note Insect damage to cones and other mortality factors limiting natural regeneration potential of Swiss stone pine (Pinus cembra L) in the northern French Alps L ... seed cones of P cembra, and then to measure the respective impact of insects and other mortality factors on the potential of natural...

Ngày tải lên: 08/08/2014, 18:21

... forests in the Appalachian and Ozark Mountains in the southeastern United States. These combi- nations of landforms and ownership class are dominated by mixed hardwood forests with ... subregions. These findings led to an hypothesis that oak decline risk rating systems could be developed from standard forest inventory data for predicting the...

Ngày tải lên: 08/08/2014, 18:21