搜索结果: 1-3 共查到“森林土壤学 Douglas fir”相关记录3条 . 查询时间(0.077 秒)
Soil-forming effect of Douglas fir at lower altitudes – a case study
tree species composition forest soil changes Norway spruce nutrient cycle
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
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...
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
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...