搜索结果: 1-13 共查到“conifer”相关记录13条 . 查询时间(0.084 秒)
Integration of Multi-Sensor Data to Estimate Plot-Level Stem Volume Using Machine Learning Algorithms-Case Study of Evergreen Conifer Planted Forests in Japan
UAS stem volume TLS SAR random forest support vector multiple regression forest biophysical parameter
2023/12/21
The development of new methods for estimating precise forest structure parameters is essential for the quantitative evaluation of forest resources. Conventional use of satellite image data, increasing...
New Argentine fossils uncover history of celebrated conifer group（图）
New Argentine fossils uncover history celebrated conifer group
2020/7/3
Newly unearthed, well-preserved conifer fossils from Patagonia, Argentina, show that an endangered and celebrated group of tropical West Pacific trees has roots in the ancient supercontinent that once...
Do Coarser Gap Mosaics in Conifer Plantations Induce More Seed Dispersal by Birds? Temporal Changes during 12 Years after Gap Creation
seed dispersal bird-dispersed seed conifer plantation gap mosaic temporal change
2024/2/28
The creation of canopy gaps is thought to be an efficient silvicultural operation to diversify species composition of monoculture conifer plantations; however, the shortage of regeneration materials i...
The use of fixed-wing UAV photogrammetry with LiDAR DTM to estimate merchantable volume and carbon stock in living biomass over a mixed conifer-broadleaf forest
UAV photogrammetry LiDAR DTM estimate merchantable volume carbon stock mixed conifer-broadleaf forest
2024/2/28
Remote sensing (RS) data are often used as a complementary data source to acquire accurate quantitative estimations of merchantable volume (V) and carbon stock in living biomass (CST), which are criti...
ESTIMATING CANOPY FUEL PARAMETERS IN A PACIFIC NORTHWEST CONIFER FOREST USING MULTIFREQUENCY POLARIMETRIC IFSAR
Forest fire mapping radar
2015/6/1
Fire researchers and managers need accurate, reliable, and efficiently-obtained data for the development and application of crown
fire behavior models. In particular, reliable estimates of critical ...
A Comparison of Forest Canopy Models Derived from LiDAR and InSAR Data in a Pacific NorthWest Conifer Forest
Forestry LIDAR SAR photogrammetry interferometer comparison DEM/DTM
2015/5/26
Active remote sensing technologies, including interferometric radar (InSAR) and airborne laser scanning (LIDAR) have the potential
to provide accurate information relating to three-dimensional fores...
The proportion of heartwood in conifer (Pinus sylvestris L., Picea abies [L.] H. Karst.) trunks and its influence on trunk wood moisture
pine spruce heartwood moisture content of wood
2015/4/24
As the tree age increases, the formation of heartwood takes place in the central part of the tree. Since there is a large difference in the moisture content between sapwood and heartwood in conifers, ...
Rapid Increase in Log Populations in Drought-Stressed Mixed-Conifer and Ponderosa Pine Forests in Northern Arizona
Climate Change Fuels Logs Mixed-Conifer Forest Ponderosa Pine Forest Spatial Variability
2013/3/4
Down logs provide important ecosystem services in forests and affect surface fuel loads and fire behavior. Amounts and kinds of logs are influenced by factors such as forest type, disturbance regime, ...
The impacts of conifer harvesting on runoff water quality：a regional survey for Wales
runoff water quality Wales regional survey
2009/6/5
Major, minor and trace element chemistry of runoff at stormflow and baseflow from 67 catchments (2 to 5 ha in area) has been determined to investigate the effects of clear felling and replanting of co...
Analysis of the impacts of major anion variations on surface water acidity particularly with regard to conifer harvesting：case studies from Wales and Northern England
surface water acidity Wales Northern England
2009/6/5
Data on the water quality of streams draining a range of acidic and acid sensitive, mainly afforested, upland catchments in mid- and north-Wales and northern-England are described to investigate the a...
The impact of conifer harvesting on stream water quality: the Afon Hafren, mid-Wales
deforestation water quality acidification pH nitrate alkalinity aluminium
2009/3/5
Results for long term water quality monitoring are described for the headwaters of the principal headwater stream of the River Severn, the Afon Hafren. The results are linked to within-catchment infor...
Detection of model-based Individual Conifer Tree Crown and Estimation of Tree Height Using LiDAR Point Clouds
Airborne LiDAR Forestry Tree height Model-based conifer tree crown Individual tree crown detection
2010/11/24
Individual tree crown parameters and tree height are desirable in forest inventory and ecological studies to estimate forest carbon stocks and volume acculately. In this study, a new method to detect ...
Coupling of boreal forests and lakes: Effects of conifer pollen on littoral communities
Coupling of boreal forests and lakes Effects of conifer pollen littoral communities
2014/5/4
Conifer pollen deposition is a visually striking spring event in boreal lakes, representing a potentially major allochthonous input of limiting nutrients. We conducted a lake survey and mesocosm exper...