Results 51 to 60 of about 2,668 (204)

Land Cover Changes in Open-Cast Mining Complexes Based on High-Resolution Remote Sensing Data

open access: yesRemote Sensing, 2020
Remote sensing technologies can play a fundamental role in the environmental assessment of open-cast mining and the accurate quantification of mine land rehabilitation efforts.
Filipe Silveira Nascimento   +5 more
doaj   +1 more source

Spectral Patterns of Pixels and Objects of the Forest Phytophysiognomies in the Anauá National Forest, Roraima State, Brazil

open access: yesEcologies, 2023
Forest phytophysiognomies have specific spatial patterns that can be mapped or translated into spectral patterns of vegetation. Regions of spectral similarity can be classified by reference to color, tonality or intensity of brightness, reflectance ...
Tiago Monteiro Condé   +6 more
doaj   +1 more source

UAS-GEOBIA Approach to Sapling Identification in Jack Pine Barrens after Fire [PDF]

open access: yesDrones, 2018
Jack pine (pinus banksiana) forests are unique ecosystems controlled by wildfire. Understanding the traits of revegetation after wildfire is important for sustainable forest management, as these forests not only provide economic resources, but also are home to specialized species, like the Kirtland Warbler (Setophaga kirtlandii).
Raechel A. White   +3 more
openaire   +2 more sources

Multispectral Characteristics of Glacier Surface Facies (Chandra-Bhaga Basin, Himalaya, and Ny-Ålesund, Svalbard) through Investigations of Pixel and Object-Based Mapping Using Variable Processing Routines

open access: yesRemote Sensing, 2022
Fundamental image processing methods, such as atmospheric corrections and pansharpening, influence the signal of the pixel. This morphs the spectral signature of target features causing a change in both the final spectra and the way different mapping ...
Shridhar D. Jawak   +3 more
doaj   +1 more source

Analysis of Land Cover Distribution and Spatial Pattern of Landscape Fragmentation and Connectivity in the Taperoá and Upper Paraíba River Basins, Brazil [PDF]

open access: yes, 2019
As bacias do alto curso do rio Paraíba e do Taperoá localizam-se na zona semiárida do Estado da Paraíba. Grande parte da delimitação do semiárido possui bosques de Caatinga, que por suas condições bioclimáticas, diversidade e endemismos, torna-se um ...
Albuquerque-Xavier, Rafael   +3 more
core   +3 more sources

INCONSISTÊNCIAS DAS ÁREAS DE PRESERVAÇÃO PERMANENTE DO CADASTRO AMBIENTAL RURAL POR MEIO DA GEOBIA

open access: yesGeosciences = Geociências, 2021
No Brasil, as regras de exploração e de conservação da vegetação nativa estão instituídas no Novo Código Florestal, o registro das informações dos imóveis rurais é realizado através do Cadastro Ambiental Rural (CAR). O objetivo do estudo é desenvolver e avaliar uma metodologia para o mapeamento das inconsistências entre a cobertura e o uso da terra com
Luis Fernando Chimelo RUIZ   +2 more
openaire   +2 more sources

Burned Area Detection in the Brazilian Amazon using Spectral Indices and GEOBIA

open access: yesRevista Brasileira de Cartografia, 2020
Mapping refined burned areas (BA) in the Brazilian Amazon is still a challenge. The main difficulty of BA detection in large areas is the presence of cloud cover and water bodies. The use of different data sources of medium spatial resolution satellite images can provide a higher availability of cloud-free images.
Thales Vaz Penha   +6 more
openaire   +2 more sources

Object-based image analysis supported by data mining to discriminate large areas of soybean

open access: yesInternational Journal of Digital Earth, 2019
This research aimed to analyze the possibility to estimate and automatically map large areas of soybean cultivation through the use of MODIS (Moderate-Resolution Imaging Spectroradiometer) images.
Carlos Antonio da Silva Junior   +8 more
doaj   +1 more source

Object-based assessment of tree attributes of Acacia tortilis in Bou-Hedma, Tunisia [PDF]

open access: yes, 2010
Acacia tortilis subsp. raddiana represents the most important woody species in the pre-Saharan zone. It is the only forest tree persisting on the edge of the desert.
De Smet, Koen   +7 more
core  

Estimating the Creation and Removal Date of Fracking Ponds Using Trend Analysis of Landsat Imagery

open access: yes, 2018
Hydraulic fracturing, or fracking, is a process of introducing liquid at high pressure to create fractures in shale rock formations, thus releasing natural gas.
Amos, John   +2 more
core   +1 more source

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