搜索结果: 91-105 共查到“知识库 森林植物学”相关记录300条 . 查询时间(1.859 秒)
Structure of the montane taiga forests of West Khentii, Northern Mongolia
montane taiga elevation deadwood regeneration
2015/4/14
Studies were undertaken to investigate the composition, structure and diversity of four different types of North Mongolian montane forest near the southern border of the taiga. These forest types, cla...
Using linear mixed model and dummy variable model approaches to construct compatible single-tree biomass equations at different scales – A case study for Masson pine in Southern China
aboveground biomass dummy variable model linear mixed model Pinus massoniana
2015/4/14
The estimation of forest biomass is important for practical issues and scientific purposes in forestry. The estimation of forest biomass on a large-scale level would be merely possible with the applic...
Belowground biomass and its annual increment in a montane beech forest in Mavrovo National Park, north-west Macedonia
root biomass coarse roots fine roots trees shrubs beech ecosystem
2015/4/14
The aim of this paper is to present the results of the investigation on belowground biomass and its annual increment in a beech ecosystem (Calamintho grandiflorae-Fagetum) in Mavrovo National Park, Re...
Social forest functions of reclaimed spoil heaps in the Ostrava-Karvina district
social forest functions real potential and real effect of wood function heap Ostrava-Karvina coal-mining district
2015/4/14
The functional efficiency of forest stands planted on the heaps originated by black coal mining was resolved in the territory of the Moravian-Silesian region. The aim was to verify the possibility of ...
How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests
competition future value growth and yield model forest management productivity
2015/4/14
Interest in conifer-broadleaf mixedwood forests has greatly increased due to continuous demand for hardwood products and a shift towards more biological or ecosystem-based management. In British Colum...
Toward the rational use of forest biomass: Lithuanian case study
forest fuel harvesting nutrients wood ash fertilization environmental restrictions
2015/4/14
This paper contains the information about some principles of sustainable forestry which are still relevant in the world. In 2002, Lithuania started research on the nutrient balance in forest ecosystem...
Development of spruce (Picea abies [L.] Karst.) target (crop) trees in pole-stage stand with different initial spacing and tending regime
Norway spruce target trees promising trees different spacing different tending
2015/4/14
This paper presents findings of a twenty-year investigation of silviculture-production in a 40-year-old afforested spruce pole-stage stand located in a mountain region. The stand was established by fo...
Effects of roads on understory plant communities in a broadleaved forest in Hyrcanian zone
road effect regenerated tree species herbaceous species soil parameters Hyrcanian forest
2015/4/14
This study was conducted to assess the effect of forest road as a corridor on local biodiversity. For this purpose, 10 segments in a 10 year-old road were selected in Neka-Zalemrood forest in Hyrcania...
Investigating the out-of-roundness and pith-off-centre in stems of three broadleaved species in Hyrcanian forests
stem diameter felled trees Alnus subcordata Acer velutinum Quercus castaneifolia
2015/4/14
The out-of-roundness and pith-off-centre of Alnus subcordata, Acer velutinum and Quercus castaneifolia growing in Hyrcanian forests of Iran were investigated. Stem disks were cut from the breast heigh...
Early-arriving saproxylic beetles developing in Scots pine stumps: effects of felling type and date
phloem- and wood-feeding beetles thinning final felling month of felling
2015/4/14
A total of 320 Scots pine (Pinus sylvestris L.) low stumps were analysed within two stands (one stand was thinned, and the other stand was subjected to clear-cut final felling) in the Drahanská Highla...
An assessment of hucava mountain stream catchment susceptibility to flooding
flood catchment susceptibility Hucava GIS
2015/4/14
The paper deals with an assessment of the Hucava mountain stream catchment susceptibility to flooding. The model catchment of the Hucava mountain stream is located in the Polana Protected Landscape Ar...
Evaluating productivity, cost, chip quality and biomass recovery for a mobile chipper in Australian roadside chipping operations
mobile chipper biomass productivity harvest residues energy content Pinus radiata Australia
2015/4/14
The Bruks mobile chipper was tested for chipping extracted non-merchantable stemwood at the roadside in Pine plantation in Victoria. The elemental time study method was used to evaluate the system pro...
Cluster reforestation near the timber line
dwarf pine height growth Krkonoš e Mts. reforestation spruce timber line underplanting
2015/3/27
Plantation of spruce in clusters (small collectives with 20–30 individuals with dense spacing) was realized on a small clear-cut and under the forest stand near the timber line in the Krkonoše Mt...
Aboveground biomass of substitute tree species stand with respect to thinning – European larch (Larix decidua Mill.)
aboveground biomass European larch Larix decidua Mill. Kruš né hory Mts substitute stands thinning
2015/3/27
This study is focused on substitute European larch stands in the Krušné hory Mts. (northern part of the Czech Republic). Research was conducted within larch thinning experiment Kalek (780 m a.s.l...
Evaluation of squared timber and log products in the Hyrcanian Forests of Iran
Hyrcanian Forests logs mechanized harvesting system squared timber
2015/3/27
The forests located in the northern areas of Iran are known as Hyrcanian Forests and are distributed across three provinces, namely Gilan, Maznadarn and Golestan. These provinces are situated in the n...