Results 1 to 10 of about 58,425 (309)

Estimation of Vegetation Indices with Random Kernel Forests

IEEE Access, 2022
Vegetation indexes help perform precision farming because they provide useful information regarding moisture, nutrient content, and crop health. Primary sources of those indexes are satellites and unmanned aerial vehicles equipped with expensive multispectral sensors.
openaire   +2 more sources

Estimation of Crop Growth Parameters Using UAV-Based Hyperspectral Remote Sensing Data

Sensors, 2020
Above-ground biomass (AGB) and the leaf area index (LAI) are important indicators for the assessment of crop growth, and are therefore important for agricultural management. Although improvements have been made in the monitoring of crop growth parameters
Huilin Tao, Haikuan Feng, Liangji Xu, Mengke Miao, Huiling Long, Jibo Yue, Zhenhai Li, Guijun Yang, Xiaodong Yang, Lingling Fan   +9 more
doaj   +1 more source

FIELD SPECTROSCOPY FOR VEGETATION EVALUATION ALONG THE NUTRIENT AND ELEVATION GRADIENT ABOVE THE TREE LINE IN THE KRKONOŠE MOUNTAINS NATIONAL PARK [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper examines the relations between vegetation spectra measured in the field along the nutrient and elevation gradient in the most valuable parts of The Krkonoše Mountains tundra and selected parameters describing vegetation state and condition ...
L. Červená, L. Kupková, R. Suchá
doaj   +1 more source

Comparison of Winter Wheat Yield Estimation Based on Near-Surface Hyperspectral and UAV Hyperspectral Remote Sensing Data

Remote Sensing, 2022
Crop yields are important for food security and people’s living standards, and it is therefore very important to predict the yield in a timely manner.
Haikuan Feng, Huilin Tao, Yiguang Fan, Yang Liu, Zhenhai Li, Guijun Yang, Chunjiang Zhao   +6 more
doaj   +1 more source

Temporal dynamics in vertical leaf angles can confound vegetation indices widely used in Earth observations

Communications Earth & Environment
Earth observation data is key for monitoring vegetation dynamics across temporal and spatial scales. The most widely used method to estimate vegetation properties from Earth observation data is vegetation indices.
Teja Kattenborn, Sebastian Wieneke, David Montero, Miguel D. Mahecha, Ronny Richter, Claudia Guimarães-Steinicke, Christian Wirth, Olga Ferlian, Hannes Feilhauer, Lena Sachsenmaier, Nico Eisenhauer, Benjamin Dechant   +11 more
doaj   +1 more source

Analyzing Fire Severity and Post-Fire Vegetation Recovery in the Temperate Andes Using Earth Observation Data

Fire, 2022
In wildfire areas, earth observation data is used for the development of fire-severity maps or vegetation recovery to select post-fire measures for erosion control and revegetation.
Melanie Maxwald, Markus Immitzer, Hans Peter Rauch, Federico Preti   +3 more
doaj   +1 more source

Comparative Assessment of Broadband Vegetation Indices Over Aquatic Vegetation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014
Remote sensing is one of the most useful tools for mapping and studying vegetation because of the advantages of synoptic view (in time and space) compared to traditional in situ survey. Remotely sensed vegetation indices (VIs) derived from airborne and satellite images represent a powerful and effective way to monitor vegetation status, growth, and bio-
Villa Paolo, Bresciani Mariano, Braga Federica, Bolpagni Rossano   +3 more
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Hyperspectral Remote Sensing Combined with Ground Vegetation Surveys for the Study of the Age of Rodent Mounds

Agriculture
Background: Rodents severely damage the ecological environment of grasslands, and rodent mounds of different ages require distinct management strategies.
Hao Qi, Xiaoni Liu, Tong Ji, Chenglong Ma, Yafei Shi, Guoxing He, Rong Huang, Yunjun Wang, Zhuoli Yang, Dong Lin   +9 more
doaj   +1 more source

Biomass estimation of rangelands in the Eastern Highlands by remote sensing indices

African and Mediterranean Agricultural Journal - Al Awamia, 2022
The rangelands of the High plateau of eastern Morocco constitute an important supplement to the feeding of sheep and goats. Estimating phytomass production from these rangelands during the growing season is useful for managers of pastoral areas.
H. Mahyou
doaj   +1 more source

Impacts of Drought on Vegetation Assessed by Vegetation Indices and Meteorological Factors in Afghanistan [PDF]

Remote Sensing, 2020
Drought has severe impacts on human society and ecosystems. In this study, we used data acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) and Tropical Rainfall Measuring Mission (TRMM) sensors to examine the drought effects on vegetation in Afghanistan from 2001 to 2018.
Iman Rousta, Haraldur Olafsson, Md. Moniruzzaman, Hao Zhang, Yuei-An Liou, Terence Darlington Mushore, Amitesh Gupta   +6 more
openaire   +3 more sources