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Type: Artigo de periódico
Title: Mapping Global Cropland And Field Size
Author: Fritz
Steffen; See
Linda; McCallum
Ian; You
Liangzhi; Bun
Andriy; Moltchanova
Elena; Duerauer
Martina; Albrecht
Fransizka; Schill
Christian; Perger
Christoph; Havlik
Petr; Mosnier
Aline; Thornton
Philip; Wood-Sichra
Ulrike; Herrero
Mario; Becker-Reshef
Inbal; Justice
Chris; Hansen
Matthew; Gong
Peng; Aziz
Sheta Abdel; Cipriani
Anna; Cumani
Renato; Cecchi
Giuliano; Conchedda
Giulia; Ferreira
Stefanus; Gomez
Adriana; Haffani
Myriam; Kayitakire
Francois; Malanding
Jaiteh; Mueller
Rick; Newby
Terence; Nonguierma
Andre; Olusegun
Adeaga; Ortner
Simone; Rajak
D. Ram; Rocha
Jansle; Schepaschenko
Dmitry; Schepaschenko
Maria; Terekhov
Alexey; Tiangwa
Alex; Vancutsem
Christelle; Vintrou
Elodie; Wu Wenbin; van der Velde
Marijn; Dunwoody
Antonia; Kraxner
Florian; Obersteiner
Abstract: A new 1km global IIASA-IFPRI cropland percentage map for the baseline year 2005 has been developed which integrates a number of individual cropland maps at global to regional to national scales. The individual map products include existing global land cover maps such as GlobCover 2005 and MODIS v.5, regional maps such as AFRICOVER and national maps from mapping agencies and other organizations. The different products are ranked at the national level using crowdsourced data from Geo-Wiki to create a map that reflects the likelihood of cropland. Calibration with national and subnational crop statistics was then undertaken to distribute the cropland within each country and subnational unit. The new IIASA-IFPRI cropland product has been validated using very high-resolution satellite imagery via Geo-Wiki and has an overall accuracy of 82.4%. It has also been compared with the EarthStat cropland product and shows a lower root mean square error on an independent data set collected from Geo-Wiki. The first ever global field size map was produced at the same resolution as the IIASA-IFPRI cropland map based on interpolation of field size data collected via a Geo-Wiki crowdsourcing campaign. A validation exercise of the global field size map revealed satisfactory agreement with control data, particularly given the relatively modest size of the field size data set used to create the map. Both are critical inputs to global agricultural monitoring in the frame of GEOGLAM and will serve the global land modelling and integrated assessment community, in particular for improving land use models that require baseline cropland information. These products are freely available for downloading from the website.
Subject: Land-cover
Food Security
9 Billion
Country: HOBOKEN
Citation: Mapping Global Cropland And Field Size. Wiley-blackwell, v. 21, p. 1980-1992 MAY-2015.
Rights: fechado
Identifier DOI: 10.1111/gcb.12838
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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