Cunha, H.F.V.; Quesada, C.A.; Andersen, K.; Hartley, I.P.

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

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

Get the data

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

Format of the data: Comma-separated values (CSV)

You must cite: 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

 

Natural Environment Research Council

Where/When

Study area
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.

Related

This dataset is included in the following collections

Amazon Fertilization Experiment (AFEX) in Central Amazon, Brazil (2017-2020)

Correspondence/contact details

Hellen Fernanda Viana Cunha
National Institute of Amazonian Researches, Brazil
 hfcunha.florestal@gmail.com

Authors

Cunha, H.F.V.
National Institute of Amazonian Researches, Brazil
Quesada, C.A.
National Institute of Amazonian Researches, Brazil
Andersen, K.
Nanyang Technological University, Singapore
Hartley, I.P.
University of Exeter

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
Biota , Environment
Keywords
Central Amazon,  leaf area index
INSPIRE Theme
Environmental Monitoring Facilities
Spatial representation type
Tabular (text)
Spatial reference system
WGS 84 / Pseudo-Mercator
Last updated
25 June 2021 18:37