搜索结果: 1-15 共查到“农学 Spectral”相关记录25条 . 查询时间(0.136 秒)
Evaluation of a UAV-mounted consumer grade camera with different spectral modifications and two handheld spectral sensors for rapeseed growth monitoring: performance and influencing factors
Modified consumer grade camera Unmanned aerial vehicle (UAV) Field-based hyperspectral data GreenSeeker crop sensor Image quality Band combination
2024/1/19
The objective of this study was to evaluate the crop monitoring performance of a consumer-grade camera with non-modified and modified spectral ranges which are commonly used in low-altitude unmanned a...
The Utility of Sentinel-2 Spectral Data in Quantifying Above-Ground Carbon Stock in an Urban Reforested Landscape
reforestation ecosystem services carbon stock random forest
2023/12/5
The transformation of the natural landscape into an impervious surface due to urbanization has often been considered an important driver of environmental change, affecting essential urban ecological p...
Semi-Automated Semantic Segmentation of Arctic Shorelines Using Very High-Resolution Airborne Imagery, Spectral Indices and Weakly Supervised Machine Learning Approaches
land water segmentation remote sensing deep learning sparse labels
2023/12/5
Precise coastal shoreline mapping is essential for monitoring changes in erosion rates, surface hydrology, and ecosystem structure and function. Monitoring water bodies in the Arctic National Wildlife...
Climate-Based Regionalization and Inclusion of Spectral Indices for Enhancing Transboundary Land-Use/Cover Classification Using Deep Learning and Machine Learning
machine learning ratio-based indices orthogonal indices Koppen–Geiger climate regionalization landscape change remote sensing landcover
2023/12/4
Accurate land use and cover data are essential for effective land-use planning, hydrological modeling, and policy development. Since the Okavango Delta is a transboundary Ramsar site, managing natural...
Spectral Retrieval of Eucalypt Leaf Biochemical Traits by Inversion of the Fluspect-Cx Model
eucalypt Fluspect leaf optical properties biochemical traits radiative transfer constrained inversion optical indices
2023/12/1
Leaf biochemical traits indicating early symptoms of plant stress can be assessed using imaging spectroscopy combined with radiative transfer modelling (RTM). In this study, we assessed the potential ...
南京农业大学农学院《Remote Sensing of Environment》发表智慧农业团队“A disease-specific spectral index tracks Magnaporthe oryzae infectionin paddy rice from ground to space”（图）
智慧农业 时空动态 遥感监测 稻瘟病
2023/10/28
2023年2月25日，农学院智慧农业团队在国际顶级遥感期刊《Remote Sensing of Environment》发表了题为“A disease-specific spectral index tracks Magnaporthe oryzae infectionin paddy rice from ground to space”的研究论文，报道了他们在多尺度稻叶瘟敏感光谱指数构建，以及小...
ESTIMATION OF LEAF AREA INDEX USING GROUND SPECTRAL MEASUREMENTS OVER AGRICULTURE CROPS: PREDICTION CAPABILITY ASSESSMENT OF OPTICAL INDICES
Hyperspectral Precision agriculture Modelling Algorithm development Spectral indices LAI
2015/7/29
Leaf area index (LAI) is a key canopy descriptor that is used to determine foliage cover, and predict photosynthesis and
evapotranspiration in order to assess crop yield. Its estimation from remote ...
CROP PARAMETERS FOR THE EVALUATION OF THE SPECTRAL RESPONSE OF COFFEE (Coffea Arabica) AREAS WITHIN THE STATE OF MINAS GERAIS, BRAZIL
Remote sensing Agriculture GIS Satellite Images Crop Mapping Crop Parameters
2015/7/29
The work relates coffee plantation characteristics with their spectral responses in TM/Landsat images to obtain identification patterns
to be used in the mapping and monitoring of coffee lands of th...
Spectral characterization of selected humic substances
13C NMR spectroscopy Fourier transform infrared spectroscopy (FTIR) humates lignohumate steady-state fluorescence spectroscopy UV-VIS
2015/3/10
Current concern for soil quality has stimulated research on soil organic matter (OM). Humic substances (HS) of different origin were compared applying ultraviolet-visible spectroscopy, Fourier transfo...
Building soil spectral library of the Czech soils for quantitative digital soil mapping
diffuse reflectance spectroscopy digital soil mapping soil spectral library
2015/3/3
Spectral libraries are the data archives of spectral signatures measured on natural and/or man-made materials. Here, the objective is to build a soil spectral library of the Czech soils (SSL-CZ). Furt...
An Evaluation of the Use of Integrated Spectral and Textural Features to Identify Agricultural Land Cover Types in Pangalengan,West Java,Indonesia
and cover classification image quantization IKONOS
2009/9/9
The objective of the study is to evaluate the use of integration of spectral and textural features derived from IKONOS imagery to identify agricultural land cover types in a mountainous case study are...
Determining Seasonal Variation in Bamboo Forest Spectral Reflectance Using Satellite- and Ground-based Data
bamboo forest LANDSAT/TM NDVI seasonal variation spectra SPOT/HRV
2009/8/28
Seasonal variation in the spectra of bamboo, broadleaved forests, and coniferous forests was examined using multi-temporal SPOT/HRV and LANDSAT/TM data and ground-based spectral measurements. The sate...
Spectral Observations for Estimating the Growth and Yield of Rice
Light conversion efficiency Net assimilation Oryza sativa L PAR absorption
2009/8/6
Remote spectral observations of plant canopies provide information that may be useful for describing their growth and yield. In this paper we (1) present equations that dcscribe how spectral reflectan...
Spectral Estimation of Radiation Absorptance and Leaf Area Index in Corn Canopies as Affected by Canopy Architecture and Growth Stage
Corn LAI Leaf angle Radiation absorptance Spectral reflectance
2009/8/6
Spectral Estimation of Radiation Absorptance and Leaf Area Index in Corn Canopies as Affected by Canopy Architecture and Growth Stage.
Non-destructive Estimation of Water Status of Intact Crop Leaves Based on Spectral Reflectance Measurements
Corn Leaf water content Non-destructive estimation Peanut RWC Soybean Spectral reflectance
2009/8/4
Visible and near- and mid- infrared spectral measurements were made on intact and detached leaves of four crop species (Corn, Peanut, Soybean and Wheat) using two spectroradiometers under three differ...