搜索结果: 16-30 共查到“林学 tree species”相关记录53条 . 查询时间(0.117 秒)
Production and soil restoration effect of pioneer tree species in a region of allochthonous Norway spruce dieback
forest transformation regeneration methods birch aspen wood production soil chemistry
2017/4/6
The paper analyses the growth, structure, production and soil chemistry of different tree species stands 20 years after allochthonous spruce dieback. The experiment was carried out at lower altitudes ...
Changes of agricultural land characteristics as a result of afforestation using introduced tree species
agricultural land afforestation soil characteristics grand fir
2016/3/2
The paper documents the mid-term changes of the soil characteristics and upper soil dynamics in the stands of introduced tree species, grand fir and Douglas-fir, on the former agricultural lands. Thes...
Differential diameter-size effects of forest management on tree species richness and community structure: implications for conservation
Differential diameter-size effects tree species richness
2015/11/13
In this paper we tested the hypothesis that logging effects in the adult tree
community reverberate upon the regeneration contingent. We examined the differences on
the tree community between forest...
HYBRIDIZATION AMONG DOMINANT TREE SPECIES CORRELATES POSITIVELY WITH UNDERSTORY PLANT DIVERSITY
canopy – understory interactions community genetics
2015/11/13
Premise of the study : Elucidating the factors that determine the abundance and distribution of species remains a central goal of
ecology. It is well recognized that genetic differences among indivi...
Influence of the mineral rock alginite on survival rate and re-growth of selected tree species on agricultural land
afforestation soil improvement stimulator plantation growth
2015/9/15
The objective of this work is to evaluate the effect of alginite on the growth parameters of seedlings
of Douglas-fir, Scots pine and line mixture of pedunculate oak, red oak and Norway maple (broad...
A global analysis raises the minimum estimated number of tropical tree species to at least 40,000–53,000 worldwide in a paper appearing in Proceedings of the National Academy of Science...
Analysis of standing timber sales based on overall coniferous/broadleaved tree species ratio
open tender invited competition SQL
2015/5/18
The first competitive open tender called “Standing timber sale” was executed in 2010. The aim of the
paper was to conduct complete collection of data from online tender catalogues and to analyze the...
Review of historical outbreaks of the nun moth (Lymantria monacha) with respect to host tree species
Czech Republic polyphagy conifers broadleaves
2015/5/18
Lymantria monacha (L.) is a polyphagous pest feeding on coniferous and deciduous trees in Eurasia. The
review presents an exhaustive overview of the nun moth outbreaks in Czech forests from 1784 to ...
The impact of juvenile tree species canopy on properties of new forest floor
afforestation agricultural land forest floor topsoil nutrients
2015/4/24
To keep forest soils fertile, forest practitioners plant mixed stands that are composed of both economically efficient trees such as conifers and soil-improving broadleaves. This is a mandated practic...
Aboveground biomass and nutrients in an 18-years-old stand of blue spruce (Picea pungens Engelm.) as a substitute tree species
aboveground biomass nutrients blue spruce substitute tree species stands
2015/4/14
Sample trees were taken for analyses from an 18-years-old blue spruce stand growing in the summit part of the Jizerské hory Mts. (Czech Republic). The sample trees were measured and dry matter and nut...
Aboveground biomass of substitute tree species stand with respect to thinning – European larch (Larix decidua Mill.)
aboveground biomass European larch Larix decidua Mill. Kruš né hory Mts substitute stands thinning
2015/3/27
This study is focused on substitute European larch stands in the Krušné hory Mts. (northern part of the Czech Republic). Research was conducted within larch thinning experiment Kalek (780 m a.s.l...
Survival and growth of outplanted seedlings of selected tree species on the High Tatra Mts. windthrow area after the first growing season
reforestation outplanting time fungal inoculation bareroot seedlings containerized seedlings
2015/3/27
Bareroot and containerized seedlings (seedling type) of Norway spruce, Scots pine, European larch, European beech, and sycamore maple were outplanted in autumn 2008 and in spring 2009. Roots of a half...
Soil characteristics under selected broadleaved tree species in East Norway
broadleaved forest stands forest soils soil chemistry soil classification soil properties
2015/3/19
Comprehensive analyses of soil properties of sites of native Scandinavian broadleaved tree species were performed in 36 habitats in East Norway. The material consisted of stands of silver birch (Betul...
Dynamics of tree species composition and characteristics of available space utilization in the natural forest of the National Nature Reserve Hrončokovsky Grúň
natural forest developmental stage utilization of production space structure
2015/3/12
The paper deals with changes in the diameter structure of particular tree species as well as with the selected production characteristics in the mixed virgin forest Hrončokovsky Grúň. The object ...
Root systems of forest tree species and their soil-conservation functions on the Krušné hory Mts. slopes disturbed by mining
root system architecture soil properties
2015/3/5
The paper describes the root system architecture of the forest tree species Fagus sylvatica L., Quercus robur L., Pinus sylvestris L., Carpinus betulus L., Acer platanoides L., and Alnus glutinosa (L....