搜索结果: 16-30 共查到“森林保护学 Forest”相关记录73条 . 查询时间(0.058 秒)
The role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest
Hylastes cunicularius mountain spruce forest uropodine mites West Carpathians
2015/3/19
The bark beetle Hylastes cunicularius was studied in the Tatra Mountains, West Carpathians, to clarify its role in transferring phoretic uropodine mites during dispersal in a mountain spruce forest. E...
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...
Composition and diversity of psocid (Insecta: Psocoptera) taxocoenoses in forest ecosystems of the Abieti-fageta s. lat. zone in the Western Carpathian Mts.
Psocoptera taxocoenoses diversity
2015/3/16
Psocid (Psocoptera) taxocoenoses were studied in forest ecosystems of the Western Carpathian Mts. in 1997?001. As a study frame, vegetation tiers (VT = altitudinal vegetation zones) of geobiocoenologi...
The first reaction of soil mite fauna (Acari, Mesostigmata) caused by conversion of Norway spruce stand in the Szklarska Por阞a Forest District
Mesostigmata mites forest conversion
2015/3/16
To observe the first reaction of Mesostigmata mites for conversion of even aged spruce stands under conversion with common beech and silver fir, four pairs of experimental plots directly neighbouring ...
Geostatistical simulation of bark beetle infestation for forest protection purposes
bark beetle geostatistics probability maps
2015/3/16
Geostatistical analysis of bark beetle activity and its use for the improvement of pest control measures are presented. Data on the volume of salvage timber felling due to bark beetle infestation for ...
Structural and compositional responses to timber harvesting for an old-growth forest on Changbai Mountain, China – Short Communication
forest harvesting stand structure species composition northeast China forest conservation Pinus ko-raiensis
2015/3/12
Broadleaved-Korean pine (Pinus koraiensis) mixed forest is a dominant native vegetation type in the eastern Eurasian Continent. We intended to examine the implications of high-intensity timber harvest...
Forest reclamation of dumpsites of coal combustion by-products (CCB)
forest reclamation Anthroposol coal-ash dumpsite coal combustion by-products soil properties growth vitality root system
2015/3/12
The present paper describes the reclamation of dumpsites of coal ash – coal combustion by-products (CCB) generated by the burning of brown coal in thermal power plants. It evaluates the soil propertie...
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 ...
Effect of forest tree species on the humus form state at lower altitudes
humus forms species composition site degradation species effect on soil
2015/2/6
The paper documents the effects of forest stands of different species composition on the humus form state and soil profile chemistry. It compares the situation in mixed broadleaved (ash, oak, hornbeam...
Forest decline and pedobiological characteristics of humus forms in the Šumava National Park
Š umava National Park mountain spruce forests forest decline bark beetle microbial activity respiration activity nitrogen mineralization soil chemistry humus forms
2015/2/6
Humus forms dynamics and characteristics of different forest sites were studied in the area of Smrčina Mt. in the Šumava National Park territory. The study was performed in vital Norway spru...
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...
The ground beetles (Coleoptera: Carabidae) of forest altitudinal zones of the eastern part of the Krušné hory Mts.
ground beetles Carabidae forest altitudinal zones Kruš né hory Mts
2015/2/2
By means of Sörensen’s index and Renkonen’s number, the differences in species composition and abundance of the ground beetles (Carabidae) were specified in 5 forest altitudinal zones (3rd, 5th–8...
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...
Composition of psocid taxocenoses (Insecta: Psocoptera) in dependence on the level of naturalness of forest ecosystems in the Žďárské vrchy hills
Psocoptera types of forest ecosystems Protected Landscape Area Ž ď árské vrchy
2015/1/29
In 1999–2000 in the Protected Landscape Area (PLA) Žďárské vrchy hills the occurrence of psocids (Psocoptera) was studied in different types of biotopes: natural forest ecosystems (stands of...