Moura, M.S.B.; Veenendaal, E.M.; Lloyd, J.; Brunello, A.T.; Miranda, R.Q.; Ishida, F.Y.
Hemispherical photographs for estimation of leaf area index of Caatinga vegetation in Brazil, 2017-2019
Cite this dataset as:
Moura, M.S.B.; Veenendaal, E.M.; Lloyd, J.; Brunello, A.T.; Miranda, R.Q.; Ishida, F.Y. (2021). Hemispherical photographs for estimation of leaf area index of Caatinga vegetation in Brazil, 2017-2019. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/a1c0f869-6e03-4902-af94-31e90ba141a0
Download/Access
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This dataset is available under the terms of the Open Government Licence
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wget --user=YOUR_USERNAME --password=YOUR_PASSWORD --auth-no-challenge https://catalogue.ceh.ac.uk/datastore/eidchub/a1c0f869-6e03-4902-af94-31e90ba141a0
https://doi.org/10.5285/a1c0f869-6e03-4902-af94-31e90ba141a0
The dataset contains raw hemispherical photographs of canopy structure representative for 0.5 ha permanent plots (26) across Caatinga area in Brazil. The photographs were taken between March 2017 and August 2019, using a digital camera (NIKON D100) with a Sigma 4.5 mm F2.8 fisheye lens.
When processed the photos provide a representative value of LAI (Leaf area index) for the plot.
When processed the photos provide a representative value of LAI (Leaf area index) for the plot.
Publication date: 2021-07-22
View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)
Format
jpg
Spatial information
Study area
Spatial representation type
Raster
Spatial reference system
WGS 84
Temporal information
Temporal extent
2017-03-01 to 2019-08-31
Provenance & quality
The photos were taken using a digital camera (NIKON D100) with a Sigma 4.5 mm F2.8 fisheye lens. Under overcast sky conditions one picture was taken on each intersection of four subplots resulting in a total of 36 photos in each plot for 12 plots. For other sites, one photo was taken at the centre of the subplot. Pictures were taken with the top of the camera facing North at a height of approximately 1 m. The quantity of photos for each plot may vary because in some occasions there was a problem with the trigger bottom of the camera, or rapid changes in sky conditions precluded taking a picture at that location or necessitated rejection of the image afterwards. When processed the photos provide a representative value of LAI for the whole plot, not for individual subplots as the image, depending on vegetation height, may include tree canopies up to 20 m distance from the camera.
Licensing and constraints
This dataset is available under the terms of the Open Government Licence
Cite this dataset as:
Moura, M.S.B.; Veenendaal, E.M.; Lloyd, J.; Brunello, A.T.; Miranda, R.Q.; Ishida, F.Y. (2021). Hemispherical photographs for estimation of leaf area index of Caatinga vegetation in Brazil, 2017-2019. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/a1c0f869-6e03-4902-af94-31e90ba141a0
Related
Correspondence/contact details
Dr Magna Soelma Beserra de Moura
Brazilian Agriculture Research Corporation - Embrapa
Magna.moura@embrapa.br
Authors
Moura, M.S.B.
Brazilian Agriculture Research Corporation - Embrapa
Lloyd, J.
Imperial College London
Other contacts
Rights holder
Imperial College London
Custodian
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk