搜索结果: 1-15 共查到“林业基础学科 Comparison”相关记录25条 . 查询时间(0.343 秒)
A Comparison of Soil C, N, and P Stoichiometry Characteristics under Different Thinning Intensities in a Subtropical Moso bamboo (Phyllostachys edulis) Forest of China
thinning intensity carbon ecological stoichiometry Moso bamboo (Phyllostachys edulis) forest soil nutrient stocks soil fertility
2023/11/22
Land management using suitable thinning intensities can promote the yield of Moso bamboo (Phyllostachys edulis) forests and alter the nutrient content and stoichiometric characteristics within the soi...
Comparison of partial least squares-discriminant analysis, support vector machines and deep neural networks for spectrometric classification of seed vigour in a broad range of tree species
least squares-discriminant analysis spectrometric classification seed tree species
2023/6/5
Seed vigour significantly influences the seed production and plant regeneration performance. The capability of NIR spectroscopy to identify seed vigour across multiple tree species rapidly and cost-ef...
Comparison of Natural Regeneration in Natural Grassland and Pine Plantations across an Elevational Gradient in the Páramo Ecosystem of Southern Ecuador
Andes species richness vegetation assemblage plant cover natural grassland soil properties
2024/2/29
During the 1980s, reforestation programs using exotic species (Pinus spp.) were established in the páramo ecosystem of Ecuador. The aims of this study were: (1) to compare the natural regeneration bet...
Comparison of the growth of fast-growing poplar and willow in two sites of Central Kazakhstan
short rotation coppice Salicaceae Central Asia plantation biometric and soil parameters
2017/6/26
In temperate climatic conditions, plantations of poplar and willow species provide sustainable production of biomass. Short rotation coppice plantations on agricultural lands have a great potential to...
Accuracy of Structure from Motion models in comparison with terrestrial laser scanner for the analysis of DBH and height influence on error behaviour
hand-held digital camera point cloud stem optimization image segmentation photogrammetry
2016/9/2
With the advantage of Structure from Motion technique, we reconstructed three-dimensional structures from two-dimensional image sequences in a circular plot with a radius of 6 m. The main objective of...
Comparison of the fungi Pestalotiopsis funerea (Desm.) Steyaert and Truncatella hartigii (Tubeuf) Steyaert isolated from some species of the genus Pinus L.in morphological characteristics of conidia and appendages
disease Pinus coulteri Pinus nigra Pinus ponderosa plant pathogens
2016/7/6
The similarity of and differences between the fungi Pestalotiopsis funerea (Desmazières) Steyaert and Truncatella hartigii (Tubeuf) Steyaert that damage the needles of the host plants Pinus ponderosa ...
A COMPARISON OF OBJECT-BASED AND PIXEL-BASED APPROACHES TO ESTIMATE LIDAR-MEASURED FOREST CANOPY HEIGHT USING QUICKBIRD IMAGERY
Canopy height Geographic object-based image analysis
2015/11/16
Canopy surface height (CSH) is a significant forest biophysical parameter to estimate above-ground biomass and carbon content.
High- spatial resolution optical remotely sensed data have shown promis...
Comparison of Myriapoda in beech and spruce forests
Chilopoda Diplopoda Isopoda Norway spruce Beskydy Mts
2015/8/14
Pitfall traps were used to capture 3,550 individuals and 34 species of Myriapoda in five pairs of Norway
spruce and beech stands in the Moravskoslezské Beskydy Mts. (Czech Republic). Diff...
FOREST TYPES CLASSIFICATION USING ETM+ DATA IN THE NORTH OF IRAN/ COMPARISON OF OBJECT-ORIENTED WITH PIXEL-BASED CLASSIFICATION TECHNIQUES
Forestry Mapping Segmentation Comparison Classification Method Object Pixel
2015/7/30
Different classification methods have been used for classification of satellite data by researchers. Addition to current classification,
pixel-based methods, developments in segmentation and object ...
COMPARISON OF SPOT5 AND LANDSAT7 FOR FOREST AREA MAPPING
Forestry SPOT5, Landsat Mapping Comparison
2015/7/29
The main purpose of this study is comparison of the potential of the Landsat7 ETM+ data and SPOT5-HRG image
for forest area mapping at the scale of 1:25000 in northern of Iran. A Landsat7-ETM+ image...
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...
Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock
chlorophyll fluorescence clonal propagation growth mother plantations mountain conditions Norway spruce water losses
2015/3/19
The present paper compares the growth of parent trees and potentially stress-tolerant mixtures of clones of Norway spruce (Picea abies [L.] Karst.) progenies coming from a specific locality near the &...
Comparison of the impact of blue spruce and reed Calamagrostis villosa on forest soil chemical properties
Calamagrostis villos upper soil layers quality and quantity Jizersk?hory Mts
2015/3/16
The impact of blue spruce (Picea pungens) and reed Calamagrostis villosa) cover on quantity and quality of upper soil layers was investigated. The research was conducted in the Jizersk?hory Mts., Czec...
Comparison of deposition fluxes on the open area and in mountain spruce stands of different density
throughfall Norway spruce Moravian-Silesian Beskids Mts
2015/3/16
To better understand the chemical transformation of rainfall after the passage through the canopies it is necessary to study throughfall deposition fluxes within forest stands. The comparison of bulk ...
Comparison of mycobiota of diverse aged spruce stands on former agricultural soil
ectotrophic stability of forest species spectrum of macromycetes mycorrhizae
2015/3/16
The mycological conditions on study plots established in forests growing on former agricultural farm lands were studied. In young spruce stand (8?0 years) reduced and unstable spectrum of macromycetes...