搜索结果: 1-9 共查到“森林植物学 Forests”相关记录9条 . 查询时间(0.187 秒)
Disturbance-induced changes in the plant biomass in forests near Plešné and Čertovo Lakes
aboveground biomass Picea abies forest
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2015/5/18
Two forested catchments in the Bohemian Forest (Šumava Mts.) were investigated according to the species
composition of herb layer and aboveground plant biomass. The bark-beetle gradation was ob...
Structure of the montane taiga forests of West Khentii, Northern Mongolia
montane taiga elevation deadwood regeneration
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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...
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
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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...
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
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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...
Evaluation of squared timber and log products in the Hyrcanian Forests of Iran
Hyrcanian Forests logs mechanized harvesting system squared timber
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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...
Influence of micro-relief and weed competition on natural regeneration of mountain forests in the Šumava Mountains
Czech Republic micro-relief mountain forests natural regeneration weed competition
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2015/3/19
Natural regeneration and its relationship to micro-relief and weed competition were studied on 6 research plots in mountain spruce forests in the Šumava Mountains. The data on density regeneratio...
Differences in the structure, species composition and diversity of primary and harvested forests on Changbai Mountain, Northeast China
broadleaved-Korean pine mixed forest forest structure species composition species diversity
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2015/3/19
Broadleaved-Korean pine (Pinus koraiensis) mixed forest is a typical vegetation type in the eastern Eurasian continent. We compared the structure, composition and diversity of a primary forest and a l...
Raccoon Use of Den Trees and Plant Associations in Western Mesophytic Forests: Tree Attributes and Availability or Landscape Heterogeneity?
Den Use Habitat Use Landscape Heterogeneity Procyon lotor Resource Availability Mesophytic Forest
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2013/3/8
We monitored 15 radio-collared raccoons (Procyon lotor) on Davies Island in March 1987 - May 1988 to determine the extent to which individual tree attributes or spatial configuration of plant associat...
Comparison of Changes in Organic Matter Dynamics due to Stand Age between Artificial Japanese Cedar (Cryptomeria japonica D. Don) Forests and Japanese Cypress (Chamaecyparis obtusa Sieb. et Zucc.) Forests
artificial Japanese cedar forest artificial Japanese cypress forest carbon mineralization rates of the litter organic matter dynamics stand age
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2009/8/28
The purpose of this study was to clarify the effects of tree species on organic matter dynamics according to stand age in Kanto region of Japan. We investigated forest floor cover percentages, amounts...