搜索结果: 1-12 共查到“工学 forest stands”相关记录12条 . 查询时间(0.079 秒)
ESTIMATING WOOD VOLUME FOR PINUS BRUTIA TREES IN FOREST STANDS FROM QUICKBIRD-2 IMAGERY
Quickbird-2 Marker-controlled watershed segmentation Object-based classification Tree wood volume Individual tree crown delineation
2016/11/23
Knowledge of forest parameters, such as wood volume, is required for a sustainable forest management. Collecting such information in the field is laborious and even not feasible in inaccessible areas....
METHODS FOR THE AUTOMATIC GEOMETRIC REGISTRATION OF TERRESTRIAL LASER SCANNER POINT CLOUDS IN FOREST STANDS
Terrestrial laser scanning forest stands registration sphere extraction tree axes
2016/2/29
A combined analysis of multiple terrestrial laser scanner point clouds recorded from different positions requires a geometric
registration of these scans. In most applications of terrestrial laser s...
POTENTIAL AND LIMITS OF AIRBORNE REMOTE SENSING DATA FOR EXTRACTION OF FRACTIONAL CANOPY COVER AND FOREST STANDS AND DETECTION OF TREE SPECIES
Forestry Ecosystem LIDAR Modelling DEM/DTM Aerial High resolution Multisensor
2015/12/29
This study presents a methodology for derivation of fractional canopy cover, detection of main tree species, and extraction of forest stands using logistic regression, airborne remote sensing data and...
INVISTIGATION ON CANOPY HEIGHT AND DENSITY DIFFERENTIATIONS IN THE MANAGED AND UNMANAGED FOREST STANDS USING LIDAR DATA (CASE STUDY: SHASTKALATEH FOREST, GORGAN)
Canopy height Canopy density Lidar Managed forest Unmanaged forest Dr. Bahramnia forest plan of Gorgan
2016/1/18
Forest management plans are interesting to keep the forest stand natural composite and structure after silvicultural and management treatments. In order to investigate on stand differences made by man...
Differential plant damage due to litterfall in palm-dominated forest stands in a Central Pacic atoll
palm-dominated forest Central Paci c atoll
2015/11/13
High densities of palms are common in many tropical forests. In some cases, the dominance of palms has been
associated with a depauperate understorey and high rates of native seedling mortality. A va...
Describing forest Stands using Terrestrial Laser-scanning
Forestry Inventory Modelling DEM/DTM
2015/7/14
A method for extracting forest parameters is described in this paper. The 3D point clouds derived from phase difference laser
scanners in forests were processed in a step-wise separation. The first s...
ESTIMATION OF TREE SPECIES PROPORTIONS OF FOREST STANDS USING LASER SCANNING
Laser Scanning Tree Species Estimation Neural Networks Forestry
2015/2/4
Tree species proportions of forest stands were estimated using data measured by Toposys laser scanner. Employed
estimation method was multilayer perceptron neural network with error back-propagation ...
EXTRACTION OF FOREST STANDS PARAMETERS FROM ASTER DATA IN OPEN FOREST
Forest inventory Tree crown area QuickBird ASTER Zagros Iran
2014/4/28
Tree crown size (CS) and stem number per hectare (SN) has become increasingly important for forest management and ecosystem
monitoring. Tree crown size is also strongly related to other canopy struc...
TREATMENT OF FOREST STANDS IN THE FOREST PLANNING ON THE CASE OF BOHINJ AND POHORJE FOREST AREAS
stand stand classification inventory detailed planning forest management planning
2009/11/26
The research focused on the mapping, classifying and dealing with forest stands in forest management planning. Stands were analysed in the forest areas of Bohinj (Forest management region Bled) and Po...
Assessing spatial structure in the beech and silver fir forest stands
stand density spatial distribution beech and silver fir stands
2009/11/26
Stand structures and spatial patterns were studied in three plots in the beech and silver fir forest on the Karst Plateau in Slovenia. We mapped all stems >10 cm in diameter at breast height (dbh) on ...
PRIORITY ESTIMATION FOR TENDING OF YOUNG FOREST STANDS USING THE MULTY CREITERIA EVALUATION METHOD
young forest forest tending priority evaluation Geographic Information System model
2009/11/26
The paper describes a computer-supported, impartial method of priority determination for young forest stand tending in homogenous units of forest planning process. The priority of tending activity was...
AUTOMATIC DELINEATION OF FOREST STANDS FROM LIDAR DATA
LiDAR segmentation automatic stand delineation stand definition stand quality
2015/11/16
Stands are the basic unit of forest management and information. The main disadvantage of stands is the labour-intensive updating
work needed and the high variance in the quality of the results due t...