搜索结果: 1-9 共查到“林学 humus”相关记录9条 . 查询时间(0.049 秒)
Effects of spruce, beech and mixed commercial stand on humus conditions of forest soils
tree species composition soil forest floor reserves
font style='font-size:12px;'>
2015/3/16
A pedological survey was carried out in a spruce monoculture, beech stand, and in a mixed stand at a field research station in R醞ec-N靘鑙ce of the Institute of Forest Ecology (IFE), Mendel University of...
Thinning experiment in the spruce and beech mixed stands on the locality naturally dominated by beech ?growth, litter-fall and humus
thinning spruce beech
font style='font-size:12px;'>
2015/3/16
In 1997, long-term thinning experiment V歟te?in Southern Bohemia was established in the young 19-year-old mixed beech and spruce stand. Three variants (0.10 ha each) were investigated: 1 ?control unthi...
Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures
soil forest floor reserves and forms pH
font style='font-size:12px;'>
2015/3/16
The main reason for the transformation of spruce monocultures at sites of mixed broadleaved forests is to create more natural relationships between the species structure of a stand and soil processes....
Production and humus form development in forest stands established on agricultural lands ?Kostelec nad 萫rn齧i lesy region
afforestation agricultural lands tree species
font style='font-size:12px;'>
2015/3/16
The afforestation of agricultural lands was carried out under different site and ecological conditions, including lower and medium elevated localities. The present study documents the rapidity of accu...
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
font style='font-size:12px;'>
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...
Changes in humus forms in gaps of the canopy of semi-natural beech stand
humus forms beech stands humus accumulation
font style='font-size:12px;'>
2015/3/3
The article presents original results of research on the humus form dynamics in a semi-natural European
beech stand in the National Natural Reserve Voděradské bučiny, in the area of Training Fo...
Logging and forest decline effects on the surface humus horizons in the Šumava Mts.
Bohemian Forest Mts. forest soils humus forms
font style='font-size:12px;'>
2015/3/3
Holorganic layers belong among the key ecosystem components of forest soils at higher altitudes. Increased biological activity of the surface humus is very often observed after forest decline and/or f...
Effect of forest tree species on the humus form state at lower altitudes
humus forms species composition site degradation species effect on soil
font style='font-size:12px;'>
2015/2/6
The paper documents the effects of forest stands of different species composition on the humus form state and soil profile chemistry. It compares the situation in mixed broadleaved (ash, oak, hornbeam...
Forest decline and pedobiological characteristics of humus forms in the Šumava National Park
Š umava National Park mountain spruce forests forest decline bark beetle microbial activity respiration activity nitrogen mineralization soil chemistry humus forms
font style='font-size:12px;'>
2015/2/6
Humus forms dynamics and characteristics of different forest sites were studied in the area of Smrčina Mt. in the Šumava National Park territory. The study was performed in vital Norway spru...