In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 7 ( 2023-7-13), p. e0287731-
Abstract:
Reference data is key to produce reliable crop type and cropland maps. Although research projects, national and international programs as well as local initiatives constantly gather crop related reference data, finding, collecting, and harmonizing data from different sources is a challenging task. Furthermore, ethical, legal, and consent-related restrictions associated with data sharing represent a common dilemma faced by international research projects. We address these dilemmas by building a community-based, open, harmonised reference data repository at global extent, ready for model training or product validation. Our repository contains data from different sources such as the Group on Earth Observations Global Agricultural Monitoring Initiative (GEOGLAM) Joint Experiment for Crop Assessment and Monitoring (JECAM) sites, the Radiant MLHub, the Future Harvest (CGIAR) centers, the National Aeronautics and Space Administration Food Security and Agriculture Program (NASA Harvest), the International Institute for Applied Systems Analysis (IIASA) citizen science platforms (LACO-Wiki and Geo-Wiki), as well as from individual project contributions. Data of 2016 onwards were collected, harmonised, and annotated. The data sets spatial, temporal, and thematic quality were assessed applying rules developed in this research. Currently, the repository holds around 75 million harmonised observations with standardized metadata of which a large share is available to the public. The repository, funded by ESA through the WorldCereal project, can be used for either the calibration of image classification deep learning algorithms or the validation of Earth Observation generated products, such as global cropland extent and maize and wheat maps. We recommend continuing and institutionalizing this reference data initiative e.g. through GEOGLAM, and encouraging the community to publish land cover and crop type data following the open science and open data principles.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0287731
DOI:
10.1371/journal.pone.0287731.g001
DOI:
10.1371/journal.pone.0287731.g002
DOI:
10.1371/journal.pone.0287731.g003
DOI:
10.1371/journal.pone.0287731.g004
DOI:
10.1371/journal.pone.0287731.g005
DOI:
10.1371/journal.pone.0287731.t001
DOI:
10.1371/journal.pone.0287731.t002
DOI:
10.1371/journal.pone.0287731.t003
DOI:
10.1371/journal.pone.0287731.t004
DOI:
10.1371/journal.pone.0287731.s001
DOI:
10.1371/journal.pone.0287731.s002
DOI:
10.1371/journal.pone.0287731.s003
DOI:
10.1371/journal.pone.0287731.s004
DOI:
10.1371/journal.pone.0287731.r001
DOI:
10.1371/journal.pone.0287731.r002
DOI:
10.1371/journal.pone.0287731.r003
DOI:
10.1371/journal.pone.0287731.r004
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3