搜索结果: 1-15 共查到“森林保护学 stands”相关记录19条 . 查询时间(0.062 秒)
Impact of risk factor management on the sanitary condition of Norway spruce (Picea abies [L.] Karst.) pure stands in Latvia
compartment location compartment shape
2015/5/5
In management of young forest stands, it is often the case in forestry that several risk factors, biotic,
abiotic and anthropogenic ones, have to be dealt with. An anthropogenic factor is of great i...
The extent of root rot damage in Norway spruce stands established on fertile sites of former agricultural land
afforestation of agricultural land Kruž berk area Luž ná area Norway spruce root rot
2015/3/20
The aim of this study was to compare the degree of root rot damage in two large complexes of Norway spruce stands established on former agricultural land at fertile sites. The root rot infection was o...
Health status of forest stands on permanent research plots in the Krkonoše Mts
air pollution beech mixed and spruce stands damage defoliation health status Krkonoš e Mts. transition matrices
2015/3/19
Damage to beech, mixed (beech with spruce to spruce with beech) and spruce stands in the Krkonoše Mts. is described on the basis of evaluation of transition matrices describing the probability of...
The response of weevil communities (Coleoptera: Curculionoidea) to the altitudinal zones of beech stands
altitudinal zones beech stand geobiocoenology weevils Curculionoidea zoocoenosis
2015/3/12
Good knowledge of geobiocoenoses is one of the primary preconditions for biogeographical differentiation of the landscape, protected territory tending and preservation of forest ecosystems. For deepen...
Cambioxylophagous fauna of young spruce stands damaged by snow in the Beskids
Norway spruce the Beskids cambioxylophages
2015/3/6
In 25 to 40-years-old stands damaged by snow in the Beskids, the fauna of cambioxylophages was analyzed both on standing breaks and lying break-off stems. Breaks are characterized by the gradually dry...
Feeding ecology of pine shoot beetles (Tomicus spp.) in tree crowns of Scots pine (Pinus sylvestris L.) stands under one-year outbreak
Tomicus piniperda T. minor Pinus sylvestris
2015/3/5
Studies were carried out in southern Poland during 2002–2006 in Scots pine stands under the effect of an outbreak of pine shoot beetles. The qualitative aspects of beetle feeding in tree crowns, studi...
Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts.
health status defoliation air-pollution and ecological stress
2015/3/3
The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in
the Modrava Forest District and of natural stands in the Plešny Forest District. Analysis is ...
Damage by deer barking and browsing and subsequent rots in Norway spruce stands of Forest Range MoP.
bark stripping browsing rot Stereum sanguinolentum red deer financial loss
2015/2/2
The paper deals with the determination of the rate of damage by deer barking and browsing, the subsequent rot caused by Stereum sanguinolentum and the rate of its progress, elucidates causes of damage...
Real potentials of social forest functions of selected forest stands at Židlochovice Forest Enterprise
floodplain forests social forest functions real potential of social forest functions
2015/2/2
Social functions of forests were evaluated at Židlochovice Forest Enterprise by applying the method of Vyskot et al. (1996–2002). Real potentials of social forest functions were determined for al...
Progress of spreading Stereum sanguinolentum (Alb. et Schw.: Fr.) Fr. wound rot and its impact on the stability of spruce stands
Stereum sanguinolentum bark stripping stand stability Norway spruce
2015/2/2
In 2002–2003, we conducted a detailed inventory of bark stripping damage in Forest District (FD) Mořkov (Forest Enterprise Frydek-Místek) and in Forest Range (FR) Proklest (Training Forest Enterp...
Different types of damage in mountain forest stands of the Czech Republic
health status antropogenous factors new damage spruce mountains
2015/2/2
Forests in the Czech Republic are highly influenced by the antropogenous factors – those are particularly air pollution, pollutant deposition, soil degradation, change of the natural forest ecosystems...
Effect of long-term tending on qualitative and quantitative production in mixed stands of spruce, fir and beech on Motyky research plot
thinnings crop trees static stability
2015/1/29
The paper is a contribution to research on thinnings in mixed (spruce-fir-beech) stands situated in the fifth forest altitudinal zone in the central part of Slovakia. Three plots were tended by free c...
Soil chemistry changes in green alder [Alnus alnobetula (Ehrh.) C. Koch] stands in mountain areas
air-pollution areas humus forms biological amelioration
2015/1/29
The present study documents the effects of green alder [Alnus alnobetula (Ehrh.) C. Koch] on the uppermost forest soil layers in mountain areas, respectively in the summit part of the Jizerské hory Mt...
Hymenoptera (Aculeata) of spruce stands in the air-pollution region of Northern Bohemia
Hymenoptera Aculeata Picea abies
2015/1/29
Using Moericke’s yellow dishes we studied the Hymenoptera (Aculeata) fauna (with the exception of Formicoidea) in spruce (Picea abies) stands of the colder region of Northern Bohemia. We collected 103...
LANDSAT and its application to evaluate the dynamics of the health condition of birch stands
Betula pendula Roth health condition LANDSAT monitoring
2015/1/29
Methods were elaborated that would specify factors affecting the accuracy of the output of LANDSAT satellite images used to evaluate the dynamics of changes in the health condition of birch stands. In...