Báo cáo lâm nghiệp: " Natural forest regeneration in spruce monocultures in the Ukrainian Beskids – prognosis by FORKOME model" ppt

... OF FOREST SCIENCE, 53, 2007 (Special Issue): 3–10 Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti -Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts. O. ... Fageti -Piceeta s. lat. and the 8 th – Piceeta s. lat. ese AVZ occur in the study area in the Moravskoslezské Beskydy Mts. in...

Ngày tải lên: 07/08/2014, 03:22

... traps give 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 mainly along ... understanding of bark beetles spatial distribution. It may be used for practical forest protection only as preliminary information. No environmental factor controlling observed...

Ngày tải lên: 07/08/2014, 03:22

... according to the equation below, according to B (1993). 4(DGD – DGD min )(DGD max – DGD) t = – – – – – – – – – – – – – – – – (DGD max – DGD min ) where: t – growth inhibiting index, ... H max – 130 b 2 = 2 ( – – – – – ) D max H max – 130 b 3 = ( – – – – – ) D 2 max Light availabi...

Ngày tải lên: 07/08/2014, 03:22

... complex analyses of foliage nutrient status in a Scots pine stand in Lithuania. Site. e study site lies in the SW part (54°55'N, 23°43'E) of Lithuania in a common Scots pine stand for ... study aim was to interpret the foliage and soil analyses, and to find possible indications in the soil-plant relation in the stand. e analyses of the fol...

Ngày tải lên: 07/08/2014, 03:22

... by the Scientific Grant Agency of the Ministry of Education of Slovakia and Slovak Academy of Sciences VEGA, Project No. 2/0045/08. Amounts of throughfall and lysimetric water in a sub-mountain ... 207–211 Water as a substantial component of the living environment is a limiting factor for plants, animals and humans themselves. e amount of (surface...

Ngày tải lên: 07/08/2014, 03:22

... and in the Bieszczady and Świętokrzyskie Mountains (J, P Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National ... 115–131. JAWORSKI A. , KOŁODZIEJ Z., 2002. Natural loss of trees, recruitment and increment in stands of primeval character in selecte...

Ngày tải lên: 07/08/2014, 03:22

... 2008). e aim of our paper is to compare the effects of different variants of regeneration felling on the successfulness and growth response of sessile oak regeneration at nutrient-rich sites of medium-alti- tude ... openness degree of light intensity transect 364 J. FOR. SCI., 57, 2011 (8): 359–368 e development of diameter and height growth of oak regeneration...

Ngày tải lên: 07/08/2014, 10:21

... of the 1990s. Forest soils showing the insufficiency of main nutrients remain today as the main factor affecting the forest vitality. e situation in the soil is subsequently reflected in the nutrition ... of the decline of Norway spruce (Picea abies [L.] Karst.) stands in Jablunkov, with a focus on air pollution load, and the state of forest soil and nu...

Ngày tải lên: 07/08/2014, 10:21

... collected in the natural stand and in the Norway spruce plantation according to δ 13 Candδ 15 N, Breuil forest, (all sporophores, mean and stan- dard deviation for each group). (ASF) saprotrophic fungi ... were collected only in the natural stand, 24 were collected only in the Nor- way spruce stand and 13 were collected both in the natural stand and...

Ngày tải lên: 07/08/2014, 16:21

... available in planning. The mod- els should be able to predict the potential damage caused by fire in any forest stand in Catalonia, depending on the site and the structure of the stand. In addition ... the stand level was the proportion of trees that died as a result of fire (Tab. I). 2.4. Stand- level damage modelling A stand- level fire damage model was developed by tes...

Ngày tải lên: 07/08/2014, 16:21

... 42]. Okinawa Island, especially in its northern part, is mainly covered by evergreen broad-leaved native forest dominated by Castanopsis sieboldii Hatusima ex Yamazaki & Mashiba (Fagaceae) and ... 245252 â INRA, EDP Sciences, 2005 DOI: 10.1051 /forest: 2005016 Original article Precipitation partitioning and related nutrient fluxes in a subtropical forest in Okin...

Ngày tải lên: 08/08/2014, 00:21

... 10.1051/forest:2005027 Original article Ectomycorrhizal colonization of Alnus acuminata Kunth in northwestern Argentina in relation to season and soil parameters Alejandra BECERRA a *, Karin PRITSCH b , ... Venezuela to latitude 28° S in northwestern Argentina [21]. Given its ability to form ectomycorrhizal (ECM), endomycorrhizal and actinor- rhizal re...

Ngày tải lên: 08/08/2014, 00:22

... the dominance of dicots in the ground flora of the birch forests (Fig. 4). 3.7. Carbon stocks of the forest floor Changes in plant growth forms altered the relationship between C -stock and forest ... DISCUSSION 4.1. Effects of afforestation on the ground vegetation biomass and composition Both larch and the native birch caused a decline...

Ngày tải lên: 08/08/2014, 00:22

... article Below-ground resources limit seedling growth in forest understories but do not alter biomass distribution José-Luis MACHADO a,b *, Michael B. WALTERS a,c and Peter B. REICH a a Department of Forest Resources, ... of seedlings of five conifer species varying widely in shade tolerance to an increase in soil resources in shaded forest understories...

Ngày tải lên: 08/08/2014, 01:21

... in diameter), situated 5 mm below and 10 mm above the heating device. Original article Water relations of oak species growing in the natural CO 2 spring of Rapolano (central ... osmotique et une diminution de la fraction d’eau * Correspondence and reprints growing in the CO 2 spring showed increased production of secon...

Ngày tải lên: 08/08/2014, 18:21