搜索结果: 1-15 共查到“测绘科学技术 leaf”相关记录27条 . 查询时间(0.054 秒)
LEAF AREA INDEX RETRIEVED FROM THERMAL HYPERSPECTRAL DATA
Thermal Emissivity spectra Leaf area index (LAI) Canopy Remote sensing Spectrometer
2016/11/23
Leaf area index (LAI) is an important essential biodiversity variable due to its role in many terrestrial ecosystem processes such as evapotranspiration, energy balance, and gas exchanges as well as p...
Estimation of leaf area index using an angular vegetation index based on in situ measurements and CHRIS/PROBA data
Multi-angular data LAI vegetation index Remote sensing
2016/11/23
The Normalized Difference Vegetation Index (NDVI) is widely used for Leaf Area Index (LAI) estimation. It is well documented that the NDVI is extremely subject to the saturation problem when LAI reach...
WAVELENGTH SELECTION OF HYPERSPECTRAL LIDAR BASED ON FEATURE WEIGHTING FOR ESTIMATION OF LEAF NITROGEN CONTENT IN RICE
Hyperspectral LiDAR Feather Weighting Leaf Nitrogen Content Wavelength Selection Partial Least Squares Support Vector Machine
2016/7/4
Hyperspectral LiDAR (HSL) is a novel tool in the field of active remote sensing, which has been widely used in many domains because of its advantageous ability of spectrum-gained. Especially in the pr...
ESTIMATION OF LEAF AREA INDEX AND CHLOROPHYLL FOR A MEDITERRANEAN GRASSLAND USING HYPERSPECTRAL DATA
Hyperspectral Vegetation Estimation Leaf Area Index Chlorophyll
2015/12/31
The study shows that leaf area index (LAI) and canopy chlorophyll content can be mapped in a heterogeneous Mediterranean grassland from canopy spectral reflectance measurements. Canopy spectral measur...
DISCRIMINATING SPECIES USING HYPERSPECTRAL INDICES AT LEAF AND CANOPY SCALES
Imaging Spectroscopy Spectral Indices Species Discrimination Leaf and Canopy Remote Sensing
2015/12/31
Developments in hyperspectral remote sensing have provided new indices or indicators of biochemical and biophysical properties. Most of the studies involving the novel spectral indices have been condu...
CORRELATION ANALYSIS BETWEEN INDICES OF TREE LEAF SPECTRAL REFLECTANCE AND CHLOROPHYLL CONTENT
Hyperspectral Remote Sensing Forestry Spectral Indices Simulation Correlation
2015/12/30
This study was conducted to investigate variations of leaf chlorophyll content and surface spectral reflectance of different tree species (Daphniphyllum glaucescens、Michelia formosana、Illicium dunnian...
GOING UNDERCOVER: MAPPING WOODLAND UNDERSTOREY FROM LEAF-ON AND LEAF-OFF LIDAR DATA
laser scanning LiDAR woodland understorey overstorey broadleaf
2015/11/10
An understorey model is created for an area of broadleaf, deciduous woodland in eastern England using airborne LiDAR data from winter 2003 (leaf-off conditions) and summer 2005 (leaf-on). The woodland...
LEAF AREA INDEX ESTIMATION IN VINEYARDS FROM UAV HYPERSPECTRAL DATA,2D IMAGE MOSAICS AND 3D CANOPY SURFACE MODELS
Precision agriculture biomass crop narrow band indices
2015/9/10
The indirect estimation of leaf area index (LAI) in large spatial scales is crucial for several environmental and agricultural applications. To this end, in this paper, we compare and evaluate LAI est...
PHYSICAL MODELLING OF NIKON COOLPIX CAMERA RGB RESPONSES FOR APPLICATION IN NON-DESTRUCTIVE LEAF CHLOROPHYLL IMAGING
Leaf optics non-destructive chlorophyll content
2015/9/9
Chlorophyll content is an important characteristic of plant leaves and a critical parameter for modelling purposes and
the scaling up from leaf to canopy level. Leaf colour is an indicator of chlorop...
LARGE SEASONAL SWINGS IN LEAF AREA OF AMAZON RAINFORESTS
biogeophysical biogeochemical variables
2015/9/9
Despite early speculation to the contrary, all tropical forests studied to date display
seasonal variations in the presence of new leaves, flowers and fruits. These past
studies were focused on the ...
CIRCUMPOLAR ASSESSMENT OF THE RELATIONSHIP BETWEEN INFRARED VEGETATION INDICES AND LEAF AREA INDEX IN FOREST
leaf area index forest landscapes
2015/9/8
Leaf area index (LAI) is a key parameter governing atmosphere-vegetation interactions.
The Global Climate Observing System (GCOS) has identified LAI as an essential climate
variable to be mapped glo...
COMPARISON OF DIFFERENT GROUND TECHNIQUES TO MAP LEAF AREA INDEX OF NORWAY SPRUCE FOREST CANOPY
LAI Sampling strategy PCA LAI-2000
2015/9/8
The leaf area index (LAI) of three monocultures of Norway spruce (Picea abies (L.) Karst), different in age and structure, was
measured by means of two indirect optical techniques of LAI field mappin...
LEAF AREA INDEX ESTIMATES OBTAINED FOR MIXED FOREST USING HEMISPHERICAL PHOTOGRAPHY AND HYMAP DATA
Hemisfer Camera Exposure Hyperspectral Data
2015/9/8
The Leaf Area Index (LAI) is an important measure in many ecological applications because vegetation-atmosphere processes of the
canopy, such as photosynthesis are controlled by the foliage and play ...
AN ADVANCED LEAF OPTICAL PROPERTIES MODEL INCLUDING PHOTOSYNTHETIC PIGMENTS
Remote Sensing Leaf Optical Properties Modelling
2015/9/8
PROSPECT, a widely-used leaf directional-hemispherical reflectance and transmittance model, currently treats the behaviour of
chlorophylls a, b, carotenoids, and anthocyanins uniformly, leading to er...
A LEAF OPTICAL PROPERTIES MODEL ACCOUNTING FOR DIFFERENCES BETWEEN THE TWO FACES
remote sensing vegetation PROSPECT
2015/9/8
Modeling radiative transfer in canopies allows efficient use of remote sensing observations to quantify vegetation state variables
and functioning. Canopy radiative transfer models use requires accur...