搜索结果: 1-15 共查到“工学 Grassland”相关记录20条 . 查询时间(0.171 秒)
APPLICATION OF MULTI-SOURCE REMOTE SENSING IMAGE IN YUNNAN PROVINCE GRASSLAND RESOURCES INVESTIGATION
Remote Sensing Image Grassland Resources NDVI Grassland Degradation Vegetation Coverage Ecological Protection
2018/5/14
Trough mastering background information of Yunnan province grassland resources utilization and ecological conditions to improves grassland elaborating management capacity, it carried out grassland res...
WATCHING GRASS GROW- A PILOT STUDY ON THE SUITABILITY OF PHOTOGRAMMETRIC TECHNIQUES FOR QUANTIFYING CHANGE IN ABOVEGROUND BIOMASS IN GRASSLAND EXPERIMENTS
Aboveground Biomass Volume Derivation Grassland Structure-from-Motion Low-Cost Cameras
2018/6/4
Grassland ecology experiments in remote locations requiring quantitative analysis of the biomass in defined plots are becoming increasingly widespread, but are still limited by manual sampling methodo...
MONITORING PHENOLOGY OF FLOODPLAIN GRASSLAND AND HERBACEOUS VEGETATION WITH UAV IMAGERY
river floodplains vegetation height land cover multi-temporal data aerial photography UAV DSM
2016/11/23
River restoration projects, which aim at improved flood safety and increased ecological value, have resulted in more heterogeneous vegetation. However, they also resulted in increasing hydraulic rough...
MULTI-TEMPORAL CROP SURFACE MODELS COMBINED WITH THE RGB VEGETATION INDEX FROM UAV-BASED IMAGES FOR FORAGE MONITORING IN GRASSLAND
Precision Agriculture Grassland UAV Crop Surface Model Structure from Motion RGBVI
2016/7/5
Remote sensing of crop biomass is important in regard to precision agriculture, which aims to improve nutrient use efficiency and to develop better stress and disease management. In this study, multi-...
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...
MONITORING DYNAMICS OF GRASSLAND VEGETATION IN POYANG LAKE NATIONAL NATURE RESERVE，USING MODIS IMAGERY
Satellite remote sensing Normalized Difference Vegetation Index (NDVI) Spatio-temporal modeling Ecosystem
2015/12/29
The particular flood recessional ecosystem in Poyang Lake provides young and high quality grasses in late autumn and wintertime, and attracts millions of migratory birds to over winter. Grasslands alo...
ESTIMATION OF GRASSLAND DEGRADATION BASED ON HISTORICAL MAXIMUM GROWTH MODEL USING WITH REMOTE SENSING DATA
Satellite Remote Sensing Detection Image Understanding Comparative Analysis Dynamic Change
2015/12/28
Grassland degradation is a complicated process and result of multi-system interaction. Observation on grassland vegetation growth and change is of critical importance to grassland resource management ...
AIRBORNE HYPERSPECTRAL REMOTE SENSING FOR IDENTIFICATION GRASSLAND VEGETATION
Vegetation Mapping Hyperspectral Image Classification Maximum Likelihood Classifier Random Forest Support Vector Machine Open Landscape
2015/9/21
In our study we classified grassland vegetation types of an alkali landscape (Eastern Hungary), using different image classification methods for hyperspectral data. Our aim was to test the applicabili...
HYPERSPECTRAL REMOTE SENSING FOR SEASONAL ESTIMATION OF ABOVEGROUND BIOMASS IN GRASSLAND HABITATS
Biomass Field spectrometer measurements Hyperion
2015/9/8
Dry grassland sites are amongst the most species rich habitats of Central Europe. In Switzerland, they are home to a large number of
plant and animal species that are classified as endangered or thre...
A COMPARISON OF FIVE POTENTIAL EVAPOTRANSPIRATION METHODS AND RELATIONSHIP TO NDVI FOR REGIONAL USE IN THE MONGOLIAN GRASSLAND
potential evaptoranspiration NDVI Mongolian grassland
2015/8/24
Potential evapotranspiration (PET) is an important parameter of water budgets at different spatial scales and is a critical variable
for understanding regional biological processes. It is often an i...
ESTIMATION OF GRASSLAND USE INTENSITIES BASED ON HIGH SPATIAL RESOLUTION LAI TIME SERIES
Leaf area index (LAI) radiation transfer modeling
2015/5/6
The identification and surveillance of agricultural management and the measurement of biophysical canopy parameters in grasslands is relevant for environmental protection as well as for political an...
Cutting date and frequency are important parameters determining grassland yields in addition to the effects of weather, soil conditions, plant composition and fertilisation. Because accurate and are...
Difference in Canopy and Air Temperature as an Indicator of Grassland Water Stress
water stress indicator air temperature canopy temperature soil moisture grassland vapour pressure deficit actual evapotranspiration
2015/1/28
In 2003–2005 in conditions of the moderately warm region of the Třeboň Basin (Czech Republic) the difference between canopy temperature (Tc) and air temperature at 2 m (Ta) was tested as an indic...
Estimating actual evapotranspiration from an alpine grassland on Qinghai-Tibetan plateau using a two-source model and parameter uncertainty analysis by Bayesian approach
Bayesian statistics Evapotranspiration Shuttleworth–Wallace model Alpine grassland Qinghai-Tibetan plateau
2013/9/2
A Bayesian method was used to fit the Shuttleworth–Wallace model to half-hourly measurements ofevapotranspiration (ET) with the eddy covariance technique from an alpine grassland on the Qinghai-Tibeta...
MULTITEMPORAL QUALITY ASSESSMENT OF GRASSLAND AND CROPLAND OBJECTS OF A TOPOGRAPHIC DATASET
Automation Quality Inspection Updating GIS Crop Multitemporal Classification
2014/4/28
As a consequence of the wide-spread application of digital geo-data in geographic information systems (GIS), quality control has
become increasingly important to enhance the usefulness of the data. ...