搜索结果: 16-30 共查到“知识库 森林测量学”相关记录35条 . 查询时间(3.042 秒)
Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy
analyses Gap Light Analyser hemispherical photography light WinScanopy
2015/3/19
We compare the results of the analysis of hemispherical images (of a broadleaved and a coniferous forest) obtained using the Gap Light Analyser (GLA) software and the results obtained by analyzing the...
The effect of different stand density on diameter growth response in Scots pine stands in relation to climate situations
diameter growth Pinus sylvestris precipitation temperature thinning
2015/3/19
The effect of stand density on the resistance of Scots pine (Pinus sylvestris L.) to climatic stress and subsequent response of diameter increment were investigated using data gathered from six long-t...
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 ...
Utilization of digital photogrammetry in forestry mapping
digital photogrammetry forestry mapping aerotriangulation
2015/3/6
At present, photogrammetric interpretation of aerial images is a dominant method of forestry mapping. In the last years, transition from analogue to digital photogrammetry has been distinct. Digital p...
Structure and accumulation of litterfall under Norway spruce stands in connection with thinnings
litterfall nutrients thinning Norway spruce
2015/2/2
The effect of thinning on the structure and accumulation of litterfall and holorganic horizons (L, F, H) in young Norway spruce stands was investigated. The research was conducted on a Norway spruce t...
Changes in trends of the height growth of spruce and pine derived from continuous measurements in forest management plans of Kostelec nad Černymi lesy and on pilot research plots in the Czech Republic
spruce pine mean stand height height growth trends current and mean height increment stand age year forest vegetation zones forest management plan (FMP) pilot research plots (PRP)
2015/2/2
In changing growth conditions, methodical procedures should concentrate on the investigation of processes currently under way in forests. Many studies have shown that present models of forest growth p...
Induction thinnings of mountain spruce forests
spruce induction thinnings thinning percent type of thinning thinning interval thinning index
2015/2/2
The paper presents models of decennial thinning percents of spruce in mountain locations. They were derived by regression fitting from empirical material with 108 measurements on 93 research plots. Mo...
Change of cold hardiness in bare-rooted Norway spruce planting stock during autumn and its effect on survival
cold hardiness electrolyte leakage lifting date
2015/1/29
The objective of this study was to test a method of measurements of electrolyte leakage for determining an optimal autumn lifting date. The second objective was to obtain information about the effects...
Virtual forest stand as a component of sophisticated forestry educational systems
forest visualisation forest modelling e-learning
2015/1/29
The paper presents the methodology of virtual stand generation. Virtual stand serves for forestry e-learning as a tool for training of forest tending and demonstration of stand structure and some fore...
子午岭森林可持续经营综合评价指标体系研究
森林可持续经营 子午岭 综合评价 指标体系
2009/12/28
分析了区域层次的森林可持续经营综合评价指标体系构建的要求和原则，并据此构建了适用于子午岭林区及其他黄土高原沟壑区的森林可持续经营综合评价指标体系。通过数据分析，验证了该指标体系的科学合理性。
Developing Methods for Estimating Forest Areas under Article 3.4 of the Kyoto Protocol:A Case Study on Private Lands in Gifu Prefecture,Japan
forest register forest under Article 3.4 Kyoto Protocol silvicultural practices
2009/8/28
This study aims to develop a methodology to account for and identify forests under Article 3.4 of the Kyoto Protocol (forests under Art. 3.4), and then to calculate forest area under Art. 3.4. Forests...
Influence of Parameters and Light Environment under the Canopy on the Fuel Moisture Estimation Model
fuels on forest floor litter moisture ratio solar radiation on forest floor
2009/8/28
Model parameterization was performed for estimation of the fuel moisture in adjacent plots with different tree species aiming at the mapping of forest fire hazard. One plot was covered with only decid...
Comparison between the Past and Present Systems Used for National Forest Inventory in Japan
forest resource database Shinrinbo forest inventory nation-wide forest inventory
2009/8/24
The forest resource database, called Shinrinbo, provides complete statistics about Japanese forests and forest resources. In 1999, a collaboration between the Japanese Forest Agency and the forest dep...