搜索结果: 1-7 共查到“森林保护学 impact”相关记录7条 . 查询时间(0.385 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...
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...
Impact of skidder and high-lead system logging on forest soils and advanced regeneration
high-lead system skidder forest soil
2015/1/29
The applied skidding technology strongly influences the impact of harvest on the ecosystem and success of natural regeneration. The impact of skidder SLKT 81 and high-lead system Larix 3T on forest so...
Diapause of Cameraria ohridella Deschka et Dimic and its impact on the species population dynamics
diapause pupa regression analysis
2015/1/29
Cameraria ohridella Deschka et Dimic is a polyvoltine species which can complete under suitable conditions the development of as many as three generations a year. In the Czech Republic, however, the t...
The impact of treatment on mountain pine beetle infestation rates
epidemic management mountain pine beetle silviculture treatment
2009/1/8
The spatial extent of the current mountain pine beetle epidemic in western Canada has highlighted the need to understand the efficacy of treatment strategies. We investigate the effect of five direct-...