Leaf area index (LAI) in fertilised plots in the Central Amazon, 2017-2018

https://doi.org/10.5285/6e70665f-b558-4949-b42a-49fbaec7e7cc

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Natural Environment Research Council

This dataset is available under the terms of the Open Government Licence

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The dataset contains the leaf area index (LAI) (m2/ m2 ) collected with the LAI-2200 C (plant canopy analyzer), that was computed with 5, 4 and 3 rings using the FV2200 software. Additionally, it has the x and y coordinates (m) of the points collected inside the plots and the time of collection (hour: min: sec).

This research was collected in a field site approximately 80 km north of Manaus, in the state of Amazonas, Brasil.

The campaigns were carried out in October 2017, March 2018, August 2018 and October 2018.

Publication date: 2021-01-26

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More information

View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

Format

Comma-separated values (CSV)

Spatial information

Study area

Spatial representation type

Tabular (text)

Spatial reference system

WGS 84 / Pseudo-Mercator

Temporal information

Temporal extent

2017-10-01 to 2018-10-31

Provenance & quality

The points were collected in 36 points inside the plot with the LAI -2200 C (plant canopy analyzer) . The data were collected from 6 am to 5 pm, avoiding recording data between 12:00 and 2:00 pm, to avoid direct sun. The LAI-2200 C requires an above canopy reading for reference, and in our case the optical sensor was placed in a clearing to log automatically while the user operator collected manually below the canopy. The sensors were always placed in the same compass direction ( both in the west in the morning and east in the afternoon). We used a view cap of 45 °C in the sensors to remove the operator from the sensor’s view. The sensors were matched before the data collection, as recommended in the manual.

The row data were analysed using the FV2200 software, where LAI was obtained (m2 one sided foliage area/ m2 ground area), that was computed with 5, 4 and 3 rings, and each ring respond over a different range of zenith angles.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:

Cunha, H.F.V.; Quesada, C.A.; Andersen, K.; Hartley, I.P. (2021). Leaf area index (LAI) in fertilised plots in the Central Amazon, 2017-2018. NERC Environmental Information Data Centre. https://doi.org/10.5285/6e70665f-b558-4949-b42a-49fbaec7e7cc

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Natural Environment Research Council