搜索结果: 1-15 共查到“测绘科学技术 stand up”相关记录22条 . 查询时间(0.093 秒)
ESTIMATION OF STAND HEIGHT AND FOREST VOLUME USING HIGH RESOLUTION STEREO PHOTOGRAPHY AND FOREST TYPE MAP
Stand Height Forest Volume normalized DSM Aerial Photo
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2016/11/30
Traditional field methods for measuring tree heights are often too costly and time consuming. An alternative remote sensing approach is to measure tree heights from digital stereo photographs which is...
FOREST STAND SEGMENTATION USING AIRBORNE LIDAR DATA AND VERY HIGH RESOLUTION MULTISPECTRAL IMAGERY
lidar multispectral imagery fusion feature extraction supervised classification energy minimisation forest stand delineation tree species
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2016/7/27
Forest stands are the basic units for forest inventory and mapping. Stands are large forested areas (e.g., ≥ 2 ha) of homogeneous tree species composition. The accurate delineation of forest stands is...
DETERMINING STAND PARAMETERS FROM UAS-BASED POINT CLOUDS
Tree Detection Stand Parameters Unmanned Aerial System Canopy Height Model Forest MATLAB
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2016/7/4
In Turkey, forest management plans are produced by terrestrial surveying techniques for 10 or 20 year periods, which can be considered quite long to maintain the sustainability of forests. For a succe...
STUDY ON THE EXPLAINABLE ABILITY BY USING AIRBORNE LIDAR IN STAND VALUE AND STAND COMPETITION
Airborne laser scanning LiDAR characteristic values Stand height Stand competition index
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2016/7/4
Forest canopy structure is composed by the various species. Sun light is a main factor to affect the crown structures after tree competition. However, thinning operation is an appropriate way to contr...
EXPERIMENT OF ESTIMATING FOREST STAND VOLUME WITH LIDAR TECHNOLOGY
Forestry Surveying LIDAR Experimental Precision
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2015/12/28
In this paper, LiDAR was introduced in tree height and stand volume measure. By experiment, the average of trees' height was 8.68 meter measured by LIDAR, while the actual value was 8.67; the relative...
ACCURACY OF CROWN SEGMENTATION AND ESTIMATION OF SELECTED TREES AND FOREST STAND PARAMETERS IN ORDER TO RESOLUTION OF USED DSM AND NDSM MODELS GENERATED FROM DENSE SMALL FOOTPRINT LIDAR DATA
Airborne Scanner System Segmentation Aerial photogrammetry Comparative analysis Forestry
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2015/12/23
The purpose of this study is to categorize how different surface model resolutions impact the estimation of trees and forest stands parameters: number of recognized trees, crown area, treetop location...
RECOVERING PLOT-SPECIFIC DIAMETER DISTRIBUTION AND HEIGHTDIAMETER CURVE USING ALS BASED STAND CHARACTERISTICS
Airborne laser scanning forest inventory Weibull Korf Scots pine
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2015/11/10
Density, diameter distribution and height-diameter (H-D) pattern of a forest stand are of primary importance in deriving various stand characteristics, but measuring diameters and heights of a tree st...
ASSESSING EFFECTS OF LASER POINT DENSITY ON BIOPHYSICAL STAND PROPERTIES DERIVED FROM AIRBORNE LASER SCANNER DATA IN MATURE FOREST
Airborne laser scanner Canopy density Canopy height Pulse density
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2015/11/10
Canopy height distributions were created from small-footprint airborne laser scanner data for mature coniferous forest in two forest areas in Norway. In total, 82 and 70 georeferenced field sample plo...
A MIXED-EFFECTS MODEL TO ESTIMATE STAND VOLUME BY MEANS OF SMALL FOOTPRINT AIRBORNE LIDAR DATA FOR AN AMERICAN AND A GERMAN STUDY SITE
Mixed-effects models random effects lidar forest inventory stand volume
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2015/11/10
Similar datasets (inventory plots, stand maps and lidar data) were available for study sites in the USA and Germany. These datasets are grouped or hierarchical in that several sample plots are located...
STATISTICAL PROPERTIES OF MEAN STAND BIOMASS ESTIMATORS IN A LIDARBASED DOUBLE SAMPLING FOREST SURVEY DESIGN
Forestry statistics LIDAR sampling inventory biomass
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2015/11/10
Airborne laser scanning (lidar) can be a valuable tool in double-sampling forest survey designs. Lidar-derived forest structure metrics are often highly correlated with important forest inventory vari...
ESTIMATION OF FOREST STAND PARAMETERS IN DENSITY CLASSES IN ARID AND SEMI-ARID REGIONS USING LANDSAT ETM+ DATA
FOREST STAND PARAMETERS DENSITY CLASSES
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2015/9/8
ESTIMATION OF FOREST STAND PARAMETERS IN DENSITY CLASSES IN ARID AND SEMI-ARID REGIONS USING LANDSAT ETM+ DATA.
An artificial tree/stand model combined with different illumination strategies for the retrieval of forest stand structural parameters
Artificial forest stands stand structure very high resolution radiative transfer
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2015/9/2
A new method for the estimation of forest stand density (trees/ha), crown diameters (m) and crown closure (percentage
covered) using artificially generated reference imagery is presented. The method ...
The role of remotely sensed image texture in estimating forest stand structural complexity
Forestry Vegetation Landsat
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2015/8/20
Information on the structural complexity of forest stands is required to inform conservation priorities that guide the sustainable
management of private native vegetation for multiple objectives of l...
SEMI-AUTOMATED FOREST STAND DELINEATION USING WAVELET-BASED SEGMENTATION OF VERY HIGH RESOLUTION OPTICAL IMAGERY IN FLANDERS,BELGIUM
image segmentation forest stand delineation wavelets
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2015/8/19
Stand delineation estimation is one of the cornerstones of forest inventory mapping and a key element to forest management decision making. Stands are forest management units defined mainly by similar...
OBJECT BASED FOREST STAND DENSITY ESTIMATION FROM VERY HIGH RESOLUTION OPTICAL IMAGERY USING WAVELET BASED TEXTURE MEASURES
segmentation stand density forest inventory wavelets very high resolution
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2015/8/19
Stand density or tree density, expressed as the number of trees per unit area, is an important forest management parameter. It is used by foresters to evaluate regeneration, to assess the effect of fo...