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Additive Root Biomass Equations for Betula platyphylla Suk. Plantations in Northeast China
Betula platyphylla root biomass additive equation disaggregated model
2023/12/6
Most of the forest biomass models that have been developed so far focus on the study of the aboveground biomass of forest trees and the prediction of belowground biomass remains obviously insufficient...
Morphological variability between diploid and tetraploid taxa of the genus Betula L. in the Czech Republic
silver birch downy birch ploidy flow cytometry classification function
2018/3/6
The aim of this work was to suggest a reliable method for distinguishing between diploid and tetraploid taxa of the
genus Betula Linnaeus, based on leaf measurements. In total, 97 individuals from 6 ...
Birch (Betula papyrifera) × white spruce (Picea glauca) interactions in mixedwood stands: implications for managementv
boreal forest competition mean annual DBH growth productivity relative density index (RDI) vegetation management
2015/4/24
Current British Columbia forest regulations drive the regeneration management towards pure conifer stands rather than remaining in a mixed-species condition. This approach may result in unnecessary ve...
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
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...
Effects of nitrogen on growth properties and phenology of silver birch (Betula pendula Roth)
nitrogen silver birch stress phenology of budbreak leaf-fall frost heaving
2015/4/14
Effects of stress caused by differentiated inputs of nitrogen after the application of ammonium nitrate (NH4NO3) on silver birch (Betula pendula Roth) were monitored in a greenhouse. The applied ammon...
Response of birch (Betula pendula Roth) phytophages to liming
birch Betula pendula Roth liming dolomitic limestone phytophages Eriophyes leionotus
2015/3/12
In the course of 2004–2007, the effects of compensation liming at the application dose of 1.5–3–6 t/ha dolomitic limestone on the elimination or activation of phytophages or other types of damage resu...
Influence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské hory Mts.
acidic deposition forest ecosystems
2015/3/5
The objective of the study was to evaluate the growth potential of Carpathian birch (Betula carpatica W. et K.) at an environmentally harsh mountain site and a response of this species to altered soil...
Feeding of the willow leaf beetle Lochmaea capreae L. (Coleoptera, Chrysomelidae) on leaves of birch (Betula pendula Roth) contaminated by heavy metals
Lochmaea capreae cadmium manganese lead zinc feed preference laboratory conditions
2015/2/2
The effect of contamination of birch (Betula pendula Roth) leaves with heavy metals on the feeding of imagoes of the willow leaf beetle (Lochmaea capreae L.) was studied under laboratory conditions. T...
The effect of stress factors on birch Betula pendula Roth
Betula pendula stress acid rain sulphur nitrogen drought grow phenology
2015/2/2
In a controlled pot trial, plants of birch (Betula pendula Roth) were treated in six variants: acid watering (pH 3), acid watering with spraying, drought, ammonium sulphate fertilisation, ammonium sul...
The role of root system in silver birch (Betula pendula Roth) dieback in the air-polluted area of Krušné hory Mts
Betula pendula Roth root system air pollution
2015/1/29
120 root systems and trunks of 20 years old birch trees and 60 root systems and trunks of 15 years old birch trees affected by defoliation and with no visual symptoms of damage were analyzed in the ai...
Scarification for Promoting Sustainable Resource Management of Betula maximowicziana in a Second-growth Forest
Betula maximowicziana hydraulic excavator regeneration scarification sustainable resource management
2009/8/24
To test the utility of scarification to promote sustainable management of Betula maximowicziana resources in a second-growth forest established after a forest fire, an area of 0.27 ha was clear-cut an...
Processing of pine (Pinus sylvestris) and birch (Betula pubescens) leaf material in a small river system in the northern Cairngorms, Scotland
leaf processing pine needles shredders Pinus sylvestris Betula pubescens Scotland
2009/3/5
Processing rates, and macroinvertebrate colonisation, of pine needles and birch leaves were studied at eight sites on the river Nethy, a small river system in the Cairngorm region of north-eastern Sco...
随着古气候和古环境研究的日渐深入，“特有种气候分析法”成为新生代定量重建古气候研究的重要方法之一。使用这一方法分析了浙江东部天台中新统下南山组的古亮叶桦（Betula mioluminifera Hu et Chaney）压型化石，研究了其叶结构特征及表皮微细构造，定量推论浙江天台中新世时年平均温度为12.5～22.1℃，春季平均温度为13.0～23.1℃，较现在温暖。我国内蒙、吉林、山东、云...
EFFECT OF METEOROLOGICAL FACTORS ON BETULA, FRAXINUS AND QUERCUS POLLEN CONCENTRATIONS IN THE ATMOSPHERE OF LUBLIN AND SZCZECIN, POLAND
pollen counts aeroallergens birch ?Betula
2010/12/23
The aim of the study was to compare the concentration of 3 allergenic taxa pollen (ash, birch and oak) in the cities of Lublin (eastern Poland) and Szczecin (western Poland) during the years 2004 and ...
BETULA AND POPULUS POLLEN COUNTS AND METEOROLOGICAL CONDITIONS IN SZCZECIN, POLAND
pollen grains pollen counts meteorological conditions
2010/12/24
The aim of the study was to analyse a relationship between the meteorological conditions and the pollen counts of selected allergenic taxa (Betula spp.,Populus spp.) in the air of Szczecin city (north...