搜索结果: 1-15 共查到“农学 Oak”相关记录41条 . 查询时间(0.203 秒)
The Strong Position of Silver Fir (Abies alba Mill.) in Fertile Variants of Beech and Oak-Hornbeam Forests in the Light of Studies Conducted in the Sudetes
ecology silviculture phytosociology habitat preferences
2023/12/18
Silver fir is one of the longest living and tallest trees in Europe, it has major commercial importance and may be found in various communities predominantly connected with lower mountainous locations...
Quantitative and qualitative evaluation of Northern red oak (Quercus rubra L.) in arid areas of North-Western Bohemia
exotic oak domestic oak growth tree quality stand quality health status
2018/3/6
The article analyses growth and quality of Northern red oak (Quercus rubra Linnaeus) based on 13 research plots
(seven in red oak stands and six in sessile oak stands) with the ages between 17 to 159...
The root system of pedunculate oak (Quercus robur L.) at the margins of regenerated stands
forest regeneration stand margin edge effect tree morphology mortality microclimate
2017/4/6
The paper aims to contribute to the determination of reasons causing the irregular growth of young pedunculate oaks occurring at the margins of naturally and artificially regenerated plots neighbourin...
Radial evolution of vascular elements in the oak Quercus ilex L. wood
vessel diameter number of vessels early wood latewood evolution
2016/11/11
In order to describe and measure the evolution of vascular elements in time, we examined two groups of samples of the green oak (Quercus ilex Linnaeus) wood. These groups are on the same radial plane ...
Monitoring infestations of oak forests by Tortrix viridana (Lepidoptera:Tortricidae) using remote sensing
oak leaf roller Marivan city Landsat satellite Quercus brantii Quercus infectoria
2016/9/2
We tested the suitability of Landsat images to track defoliation by insect herbivory with focus on the oak leaf roller, Tortrix viridana (Lep.: Tortricidae). Landsat images from the period before (200...
Response of diameter and height increment to thinning in oak-hornbeam coppice in the southeastern part of the Czech Republic
drought European hornbeam growth of sprouts sessile oak soil moisture stump basal area
2016/6/3
The objective of this paper was to test the hypothesis that growth and soil moisture would increase after heavy thinning in seven years old oak-hornbeam coppice stand. Effects of thinning on (i) diame...
Silvicultural potential of northern red oak and its regeneration–Review
ecological niche acorn silvicultural systems soil
2016/5/11
Northern red oak (Quercus rubra Linnaeus) is a promising species which could help to mitigate the sanitary problems. Northern red oak is also a commercial species and offers many environmental service...
Effects of Cattle Management on Oak Regeneration in Northern Californian Mediterranean Oak Woodlands
Cattle Management Oak Regeneration
2015/11/13
Oak woodlands of Mediterranean ecosystems, a major component of biodiversity hotspots in Europe and North America,
have undergone significant land-use change in recent centuries, including an increas...
Quantitative and qualitative characteristics of Persian oak along altitudinal gradation and gradient (Case study: Ilam province, Iran)
habitat growing stock DBH tree height tree quality regeneration
2015/8/14
Quantitative and qualitative characteristics of Persian oak (Quercus persica) were studied in relation to
altitude and slope variations in Ilam province. A total area of 1,500 m2 (30 × 50 m) was cov...
An investigation on determining the nutritive value of oak nuts
quercus pubescens degradability tannin
2015/6/1
This study was conducted to determine the nutritive values of shelled, unshelled oak nuts and their shells. For the estimation of dry matter (DM), organic matter (OM) and crude protein (CP), degradabi...
Comparison of the bond strength of oak (Quercus L.) and beech (Fagus sylvatica L.) wood glued with different adhesives considering various hydrothermal exposures
adhesion of wood hydrothermal exposure oak beech
2015/5/18
The investigation of the hydrothermal exposure effect on the glue-line strength is obvious when outdoor
application of wood products is in option.
Quantity and quality of litterfall in young oak stands
Quercus petraea (Matt.) Liebl climatic factors nutrients
2015/5/5
Litterfall, an important component of the nutrient cycle in forest ecosystems, was measured for 9 years
in young oak stands on two localities classified as beech-oak climax (Fageto-Quercetum). We es...
Long-term response of understorey cover, basal area and diversity to stand density in a mixed oak forest on the Síkfőkút plot in Hungary
Quercus cerris shrub layer Acer campestre Shannon-Wiener index Evenness index shrub foliage cover
2015/4/24
The serious oak decline was reported for the 1979–80 period and 63.0% of adult oaks died in a mixed oak forest in the Síkfőkút site, Hungary. The data were used to obtain (1) quantitative informa...
Growth characteristics of oak (Quercus petraea [Mattusch.] Liebl.) stand under different thinning regimes
oak Quercus petraea Mattusch Liebl. thinning promising trees target trees
2015/4/14
In the paper, selected quantitative characteristics of 57-year-old oak pole stage stand were analysed on plots with different thinning regimes at its establishment. Six thinning treatments were perfor...
Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran
allometric relationships destructive sampling leaf area index Quercus libani Oliv. specific leaf area
2015/4/14
The focus of the present study is the estimation of leaf area index (LAI) and the assessment of allometric equations for predicting the leaf area of Lebanon oaks (Quercus libani Oliv.) in Iran’s north...