搜索结果: 1-7 共查到“森林保护学 e Mts.”相关记录7条 . 查询时间(0.051 秒)
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...
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 ...
About phytopathological and histological aspects of Norway spruce dieback in the Orlické hory Mts.
spruce decline Gremmeniella abietina Ascocalyx abietina Sirococcus strobilinus NOx
2015/2/6
The condition was evaluated of tissues of declining young spruce stands in selected localities of the Orlické hory Mts. It refers to stands occurring in top parts affected by an air pollution disaster...
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...
Root decays as a potential predisposition factor of a bark beetle disaster in the Šumava Mts.
Armillaria bark beetle Ips typographus
2015/1/29
Root decay infection and potential relations to Ips typographus L. outbreaks in the Šumava Mts. (Bohemian Forest) were monitored in 3 permanent sample plots. As an originator of root decays honey...
The role of root system in silver birch (Betula pendula Roth) dieback in the air-polluted area of Krušné hory Mts
Betula pendula Roth root system air pollution
2015/1/29
120 root systems and trunks of 20 years old birch trees and 60 root systems and trunks of 15 years old birch trees affected by defoliation and with no visual symptoms of damage were analyzed in the ai...