搜索结果: 1-12 共查到“森林保护学 development”相关记录12条 . 查询时间(0.254 秒)
Root system development in naturally regenerated Douglas-fir saplings as influenced by canopy closure and crowding
natural regeneration competition shading physical tree stability
2015/9/15
Documented information on the growth dynamics and related silvicultural manipulation of naturally
regenerat ed Douglas-fir beneath a canopy shelter is scarce. We hypothesized that long regeneration ...
Factors affecting the development of Phytophthora alni ssp. alni infections in Alnus glutinosa L.
Alnus glutinosa black alder Phytophthora alni subsp alni infection experiment natural infection seasonal variation
2015/4/14
Phytophthora alni is responsible for a devastating disease in alder and changes in the environment of riparian and alder carr ecosystems. One of the main approaches to solve this problem is to find na...
Geographical variability of spruce bark beetle development under climate change in the Czech Republic
bark beetle altitudinal shift climate change scenario Ips typographus generations temperature increase
2015/3/27
Climate change is expected to influence the distribution and population dynamics of many insect pests, with potential severe impacts on forests. Spruce bark beetle Ips typographus (L.) (Col.: Curculio...
The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees
artificial infection bark lesion broadleaved trees pathogenicity common beech Fagus sylvatica Phyto-phthora cactorum substrate specificity water stress
2015/3/19
The three experiments relating to the pathogenicity of Phytophthora cactorum to beech and other forest tree species were carried out. The experiments were aimed to confirm pathogenicity of the pathoge...
Historical development of floodplain forests in the Upper Moravian Vale (Vrapač National Nature Reserve, Czech Republic)
floodplain forest historical development of forests coppice-with-standards national nature reserve forest management
2015/3/12
The paper deals with historical development of floodplain forests in the area of Vrapač National Nature Reserve in the floodplain of the Morava River (Protected Landscape Area Litovelské Pomoraví...
Development of beech necrotic disease in the growing phase of maturing stand under air pollution stress
Fagus sylvatica L. necrotic disease defoliation growth phase of maturing stand pollutants Central Slovakia
2015/2/6
The paper compares the state of the necrotic disease of beech stem bark on three research plots in 2004 with 1995. The investigated objects were three research plots of beech in the growing phase of m...
Occurrence, development and harmfulness of the bark anobiid Ernobius mollis(L.) (Coleoptera: Anobiidae)
Anobiidae Ernobius mollis Pinus nigra occurrence development harmfulness
2015/2/6
The paper summarizes results of the study of the occurrence, development and harmfulness of Ernobius mollis (Linnaeus, 1758), which occurred plentifully on Pinus nigra Arn. impaired by drought in the ...
Contribution to the knowledge of development and harmfulness of imported willow leaf beetle (Plagiodera versicolora) (Coleoptera, Chrysomelidae)
Plagiodera versicolora Chrysomelidae occurrence development fecundity enemies economic importance
2015/2/6
The paper deals with the occurrence, development and harmfulness of imported willow leaf beetle (Plagiodera versicolora Laich.) in riparian and accompanying stands of the Svratka and Svitava rivers in...
Occurrence, development and natural enemies of cecidogenous generations of Pemphigus gairi Stroyan (Sternorrhyncha, Pemphigidae)
Pemphigus gairi Populus spp. occurrence development galls enemies Anthocoris minki importance
2015/2/2
The paper deals with the occurrence, development and natural enemies of the cecidogenous aphid Pemphigus gairi Stroyan (Pemphigidae). The aphid abundantly occurred on leaves of Populus nigra and P. ni...
Development of necrotic disease and health condition of trees of selective quality in a systematically tended beech pole-stage stand
beech pole-stage stand thinnings Central Slovakia
2015/1/29
We compare the results of observations of bark necrotic disease and defoliation of beech assimilatory organs carried out in 1996 and 2000. A systematically managed, 53-year old beech pole-stage stand ...
The Development of Pine Wilt Disease and Dynamics of Bursaphelenchus xylophilus in Inoculated Pinus thunbergii Seedling under a Shaded Condition
Bursaphelenchus xylophilus photosynthesis Pinus thunbergii reproduction shade treatment
2009/8/28
We inoculated the pine wood nematode, Bursaphelenchus xylophilus, into Pinus thunbergii seedlings, and investigated the progress of symptoms of pine wilt disease and dynamics of B. xylophilus in the s...
Fire Development from a Point Source in Surface Fuels of a Mature Anatolian Black Pine Stand
Fire growth line fire point fire litter fuel black pine
2009/1/9
A total of 28 line and 24 point-source fires were ignited under varying weather and fuel loading conditions in Anatolian black pine (Pinus nigra J.F.Arnold subsp. nigra var. caramanica (Loudon) Rehde...