Harmonized in situ datasets for agricultural land use mapping and monitoring in tropical countries

Jolivot Audrey, Lebourgeois Valentine, Leroux Louise, Ameline Maël, Andriamanga Valérie, Bellon Béatriz, Castets Mathieu, Crespin-Boucaud Arthur, Defourny Pierre, Diaz Santiana, Dieye Mohamadou, Dupuy Stéphane, Ferraz Rodrigo P.D., Gaetano Raffaele, Gély Marie, Jahel Camille, Kabore Bertin, Lelong Camille, Le Maire Guerric, Lo Seen Danny, Muthoni Martha, Ndao Babacar, Newby Terrence, de Oliveira Santos Cecília Lira Melo, Rasoamalala Eloise, Simoes Margareth, Thiaw Ibrahima, Timmermans Alice, Tran Annelise, Bégué Agnès. 2021. Harmonized in situ datasets for agricultural land use mapping and monitoring in tropical countries. Earth System Science Data, 13 (12) : 5951-5967.

https://doi.org/10.5194/essd-13-5951-2021

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Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/P7OLAP

Quartile : Outlier, Sujet : GEOSCIENCES, MULTIDISCIPLINARY / Quartile : Outlier, Sujet : METEOROLOGY & ATMOSPHERIC SCIENCES

Résumé : The availability of crop type reference datasets for satellite image classification is very limited for complex agricultural systems as observed in developing and emerging countries. Indeed, agricultural land use is very dynamic, agricultural censuses are often poorly georeferenced and crop types are difficult to interpret directly from satellite imagery. In this paper, we present a database made of 24 datasets collected in a standardized manner over nine sites within the framework of the international JECAM (Joint Experiment for Crop Assessment and Monitoring) initiative; the sites were spread over seven countries of the tropical belt, and the number of data collection years depended on the site (from 1 to 7 years between 2013 and 2020). These quality-controlled datasets are distinguished by in situ data collected at the field scale by local experts, with precise geographic coordinates, and following a common protocol. Altogether, the datasets completed 27 074 polygons (20 257 crops and 6817 noncrops, ranging from 748 plots in 2013 (one site visited) to 5515 in 2015 (six sites visited)) documented by detailed keywords. These datasets can be used to produce and validate agricultural land use maps in the tropics. They can also be used to assess the performances and robustness of classification methods of cropland and crop types/practices in a large range of tropical farming systems.

Mots-clés Agrovoc : cartographie de l'utilisation des terres, système de culture, utilisation des terres, télédétection, imagerie par satellite, surveillance des cultures, système d'exploitation agricole, classification des terres, pratique culturale, terre agricole, rotation culturale, diversification