搜索结果: 1-6 共查到“农学 forest trees”相关记录6条 . 查询时间(0.158 秒)
Rodent-caused damage to forest trees from the viewpoint of forestry practice
bank vole bark damage field vole forest damage
2015/3/19
Small mammals cause serious damage to forests but there is only little knowledge of their ecology and possibilities of plantation protection. The objective of our study was to collect information on t...
Phenology of four broad-leaved forest trees in a submountain beech forest
submountain beech forest phenology vegetative phenological phases
2015/3/17
The phenology of four deciduous forest tree species (Carpinus betulus L., Fagus sylvatica L., Quercus dalechampii Ten., Tilia cordata Mill.) was studied in a submountain beech forest stand in Central ...
Risk factors influencing the probability of browsing by hoofed game on forest trees
pine logit model odds ratios
2015/3/6
In this paper we analyze how selected risk factors determine the probability of browsing by hoofed game on forest trees. Risk factors covered by the model are: tree species (Norway spruce or Scotch pi...
Humans should behave in such a way that they will not endanger the existence of other living entities. After all, human activities affected the tree species composition and wildlife living conditions....
Effects of livestock exclusion on forest trees regeneration (Case study: Ramsar’s district 1- Iran)
livestock removal forest regeneration Ramsar’s district diameter classes forest management plan
2015/5/6
In order to study the effect of livestock removal on forest regeneration in Ramsar district 1- Mazandaran Province, the compartment 23 with area of 96 ha was selected. The required data were collected...
The Relationship between Bark-stripping Damage to Forest Trees Caused by Sika Deer (Cervus nippon) and Understory Vegetation
bark-stripping Cervus nippon plantation forests preventing deer damage understory vegetation
2009/8/27
The relationship between the number of bark-stripped trees and understory vegetation was examined in cypress (Chamaecyparis obtusa) plantations in the Kuma region of Kumamoto Prefecture, Japan. First,...