搜索结果: 1-14 共查到“森林测量学 Forest”相关记录14条 . 查询时间(0.215 秒)
SPATIO-TEMPORAL ASSESSMENT OF MARGALLA HILLS FOREST BY USING LANDSAT IMAGERY FOR YEAR 2000 AND 2018
Change Detection LULC Supervised Classification Satellite Remote Sensing LANDSAT ETM+ and OLI
2018/5/11
Environmental imbalance due to human activities has shown serious threat to ecosystem and produced negative impacts. The main goal of this study is to identify, monitor and classify temporal changes o...
APPLYING RANDOM FOREST CLASSIFICATION TO MAP LAND USE/LAND COVER USING LANDSAT 8 OLI
Classification Landsat 8 OLI Land use Land cover Random Forest Decision Tree
2018/4/18
This study used the Random Forest classifier (RF) running in R environment to map Land use/Land cover (LULC) of Dak Lak province in Vietnam based on the Landsat 8 OLI. The values of two RF parameters ...
On the way to continuous cover forest at middle elevations – the question of forest structure and specific site characteristics
Dauerwald stand transformation diversity production waterlogged site
2015/4/24
The transformation process of even-aged forest stands to irregular forest stands on waterlogged sites after 20 years effort was analysed. Data from two 1-ha PRP was analysed with special focus on stru...
Free European data on forest distribution: overview and evaluation
tree species distribution data quality forest management plans accuracy assessment
2015/4/24
A growing need for the evaluation of prospects and sustainability of forest resources calls for the availability of harmonized data on forest distribution. We described and evaluated nine datasets pro...
Determination of correction coefficient of average skidding distance according to the existing road network in Alikia Soltan forest of Iran
theoretical average skidding distance real average skidding distance skid trails
2015/4/24
One of the factors in planning forest roads is average skidding distance which is calculated in projects from the map, according to forest road density, however it has a low accuracy. In this study re...
Steady infiltration rates estimated for a mountain forest catchment based on the distribution of plant species
Bohemian Forest experimental catchment infiltration map mountain Podzols vegetation cover
2015/4/14
Among other important factors, vegetation cover strongly affects the hydrological processes in mountain catchments. In this paper, we present the results of field infiltration measurements at the loca...
Analysis of the accuracy of GPS Trimble JUNO ST measurement in the conditions of forest canopy
forest canopy impact GPS GPS device accuracy location precision mean square error Trimble JUNO ST
2015/3/20
GPS Trimble JUNO ST was tested at 16 points under forest canopy. The measurements were done on three different dates of the growing seasons in 2007 and 2008. On each date, 4 recordings were measured i...
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 ...
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...
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...
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...
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...