搜索结果: 1-9 共查到“林业基础学科 Douglas-fir”相关记录9条 . 查询时间(0.019 秒)
Shifts in Foliage Biomass and Its Vertical Distribution in Response to Operational Nitrogen Fertilization of Douglas-Fir in Western Oregon
Douglas-fir nitrogen fertilization foliage distribution allometry biomass
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2024/2/4
Nitrogen (N) fertilization is a commonly applied silvicultural treatment in intensively managed coast Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) plantations. Field trials were e...
Dynamics and Vertical Distribution of Roots in European Beech Forests and Douglas Fir Plantations in Bulgaria
Keywords annual production biomass Decision Matrix necromass root traits root mass sequential coring turnover rate
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2024/2/26
Recently, increasing attention has been paid to the anthropogenic degradation of the riverbed and its relationship to the ecological status of the adjacent river landscape. The key objective of this r...
Double-spined bark beetle (Ips duplicatus) (Coleoptera: Curculionidae): a new host – Douglas fir (Pseudotsuga menziesii) – Short Communication
Czech Republic forestry pest Scolytinae
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2015/7/2
This paper documents the first recorded
successful development of I. duplicatus on Douglas fir (Pseudotsuga menziesii) (Mirbel) Franco. Two densely infested
Douglas fir trees were found in a fores...
Soil-forming effect of Douglas fir at lower altitudes – a case study
tree species composition forest soil changes Norway spruce nutrient cycle
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2015/4/24
Forest ecosystem and in particular forest soil biodiversity and stability could be jeopardised by the impropriate tree species composition. Douglas fir is a species which has a high potential in Europ...
Root system development in Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) on fertile sites
Douglas fir root system fertile sites
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2015/4/14
The paper analyses the root system development in the artificially established stands of Douglas fir aged 10, 20, 30, 60 and 80 years on aerated soils (Cambisols) without skeleton. On these sites, the...
Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration
Douglas fir herbicides introduced tree species natural regeneration
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2015/3/19
Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration under parent stand after weed suppression was investigated in the area of the Training Forest Enterprise in Kostelec nad Če...
Production potential of Douglas fir in acid sites of H鵵ky Training Forest District, Secondary Forestry School in P韘ek
Douglas fir Norway spruce Scots pine
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2015/3/16
The study is a follow-up of the production potential of Douglas fir in mesotrophic sites of the K鴗iny Training Forest Enterprise (TFE) (Journal of Forest Science, No. 7, 2008). Production parameters (...
Humus conditions of stands with different proportion of Douglas fir in the H鵵ky Training Forest District and K鴗iny Training Forest Enterprise
species composition soil forest floor reserves
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2015/3/16
The paper presented evaluates reserves and chemical composition of forest floor of three stands of Douglas fir, spruce and spruce with beech at acid sites (3K) in the H鵵ky Training Forest District (TF...
Natural regeneration of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) in forest stands of Hurky Training Forest District, Higher Forestry School and Secondary Forestry School in Pisek
self-seeding advance growth radiation
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2015/3/6
Possibilities are assessed of the natural regeneration of Douglas fir under conditions of Hůrky Training Forest District, Higher Forestry School and Secondary Forestry School in Písek, in stand 1...