搜索结果: 1-15 共查到“知识库 林学 forest stands”相关记录20条 . 查询时间(0.109 秒)
Ecosystem Carbon Stocks and Their Annual Sequestration Rate in Mature Forest Stands on the Mineral Soils of Estonia
forest ecosystem phytocoenosis soil cover organic carbon stock phytomass annual increase
2023/12/4
Mature forest ecosystems are the most considerable reservoir of organic carbon (OC) among terrestrial ecosystems. The effect of soil type on aboveground OC stocks and their annual increases (AI) of ov...
The condition of forest stands on afforested agricultural land in the Orlické hory Mts
stand production soil condition humus accumulation Norway spruce
2017/4/6
The paper presents an evaluation of the growth of newly established forest stands on former agricultural land and furthermore describes the state of the upper part of the soils in these stands in comp...
Monitoring of defoliation in forest stands of the Czech Republic and its comparison with results of defoliation monitoring in other European countries
International Cooperative Programme on Assessment and Monitoring of Air Pollution Effect on Forests (ICP Forests) defoliation monitoring forest stands forest species air pollution international comparison
2015/4/14
As a part of International Cooperative Programme on Assessment and Monitoring of Air Pollution Effect on Forests (ICP Forests), defoliation of forest stands has been assessed in the Czech Republic sin...
Health status of forest stands on permanent research plots in the Krkonoše Mts
air pollution beech mixed and spruce stands damage defoliation health status Krkonoš e Mts. transition matrices
2015/3/19
Damage to beech, mixed (beech with spruce to spruce with beech) and spruce stands in the Krkonoše Mts. is described on the basis of evaluation of transition matrices describing the probability of...
Regeneration of forest stands on permanent research plots in the Krkonoše Mts
forest ecosystem forest regeneration Krkonoš e Mts. site and stand conditions structure and development of forest stands
2015/3/19
The article describes natural, combined and artificial regeneration on 38 permanent research plots in both Czech and Polish part of the Krkonoše Mts. The attention is paid to species composition,...
Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development
Clark-Evans index forest stands Hopkins-Skellam index horizontal structure K-function Krkonoš e Mts. Pielou-Mountford index
2015/3/19
Horizontal structure on 38 permanent research plots is described for juvenile growth and developmental phases (natural seeding, advance growth, plantations) and tree layer of a parent stand. Hopkins-S...
Structure and development of forest stands on permanent research plots in the Krkonoše Mts.
forest development mountain forest structural diversity
2015/3/19
The research is focused on structure and development of forest stands from 5th to 8th forest vegetation zone in the Krkonoše Mts. The forest stand diversity according to tree species composition ...
State and development of phytocenoses on research plots in the Krkonoše Mts. forest stands
beech mixed and spruce stands classification Krkonoš e Mts. ordination state and development of phytocenoses
2015/3/19
The paper assesses the state and development of phytocenoses in beech, mixed and spruce stands on permanent research plots (PRP) 1–32 in the Krkonoše (Giant) Mts. in the years 1980–2005, i.e. dur...
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
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...
Natural regeneration of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) in forest stands of Hurky Training Forest District, Higher Forestry School and Secondary Forestry School in Pisek
self-seeding advance growth radiation
2015/3/6
Possibilities are assessed of the natural regeneration of Douglas fir under conditions of Hůrky Training Forest District, Higher Forestry School and Secondary Forestry School in Písek, in stand 1...
Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands
humification nutrition cation exchange capacity (CEC)
2015/3/6
The soil is an irreplaceable component of forest ecosystems. Soil-forming processes directly influence element cycling (EC). Plant-soil interaction is a specific part of EC. Plant-soil interactions we...
Regeneration under a shelterwood system of spruce-dominated forest stands at middle altitudes
transformation shelterwood system spruce
2015/3/5
An experiment with regeneration under the shelterwood of spruce-dominated mature stand was established at middle altitudes of the Žďárské vrchy Hills in 1971. The paper brings a comparison o...
Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts.
health status defoliation air-pollution and ecological stress
2015/3/3
The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in
the Modrava Forest District and of natural stands in the Plešny Forest District. Analysis is ...
Species diversity, abundance and dominance of macromycetes in beech forest stands
Fagus sylvatica L. macromycetes species diversity abundance dominance
2015/2/6
The aim of this paper is to contribute to the knowledge of dynamics of species diversity, abundance, distribution of fruiting bodies and dominance of macromycetes in mycocoenosis of beech monocultures...
Real potentials of social forest functions of selected forest stands at Židlochovice Forest Enterprise
floodplain forests social forest functions real potential of social forest functions
2015/2/2
Social functions of forests were evaluated at Židlochovice Forest Enterprise by applying the method of Vyskot et al. (1996–2002). Real potentials of social forest functions were determined for al...