| Name | GDHY_version_1.2 |
| Edition | version 1.2 |
| DOI | doi:10.20783/DIAS.528 |
| Metadata Identifier | GDHY_v1_220221122152356-DIAS20221121113753-en |
| Name | Toshichika Iizumi |
|---|---|
| Organization | Institute for Agro-Environmental Sciences, National Agriculture and Food Research Institute |
| Address | 3-1-3 Kannondai, Tsukuba, Ibaraki, 305-8604, Japan |
| TEL | 029-838-8435 |
| iizumit@affrc.go.jp |
| Name | Toshichika Iizumi |
|---|---|
| Organization | Institute for Agro-Environmental Sciences, National Agriculture and Food Research Institute |
| iizumit@affrc.go.jp |
| Name | Toshichika Iizumi |
|---|---|
| Organization | Institute for Agro-Environmental Sciences, National Agriculture and Food Research Institute |
| iizumit@affrc.go.jp |
The Global Dataset of Historical Yield (GDHY_v1_2) offers annual time series data of 0.5-degree grid-cell yield estimates of major crops worldwide. The crops considered in this dataset are maize, rice, wheat and soybean. The unit of yield data is t/ha. The grd-cell yield data were estimated using the satellite-derived crop-specific vegetation index and FAO-reported country yield statistics. Maize and rice have the data for each of two growing seasons (major/secondary). "Winter" and "spring" are used as the growing season categories for wheat. Only "major" growing season is available for soybean. These growing season categories are based on Sacks et al. (2010, DOI: 10.1111/j.1466-8238.2010.00551.x). The geographic distribution of harvested area changes with time in reality, but we used the time-constant data in 2000 (Monfreda et al., 208, doi:10.1029/2007GB002947). Many missing values are found in the first (1981) and last (2011) years because grid-cell yields are not estimated for these years when growing season spans two calendar years.
| North bound latitude | 90 |
| West bound longitude | -180 |
| Eastbound longitude | 180 |
| South bound latitude | -90 |
| Dimension Name | Dimension Size (slice number of the dimension) | Resolution Unit |
|---|---|---|
| column | 720 | 0.5 (deg) |
| row | 360 | 0.5 (deg) |
| vertical | 1 | 1 (level) |
| Keyword Type | Keyword | Keyword thesaurus Name |
|---|---|---|
| theme | Agriculture > Agricultural Plant Science > Crop/Plant Yields | GCMD_science |
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File download from DIAS : https://data.diasjp.net/dl/storages/filelist/dataset:528
The grid-cell yield estimates available in this dataset are a hybrid of satellite-derived crop-specific vegetation index and FAO-reported country yield statistics.
The references (Iizumi et al., 2014, doi:10.1111/geb.12120; Iizumi and Ramankutty, 2016, doi:10.1088/1748-9326/11/3/034003; Iizumi et al., in review) should be cited when the dataset is used.
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If you plan to use this dataset for a conference presentation, paper, journal article, or report etc., please include acknowledgments referred to following examples. If the data provider describes examples of acknowledgments, include them as well.
" In this study, [Name of Dataset] provided by [Name of Data Provider] was utilized. This dataset was also collected and provided under the Data Integration and Analysis System (DIAS), which was developed and operated by a project supported by the Ministry of Education, Culture, Sports, Science and Technology. "
Iizumi, T., Yokozawa, M., Sakurai, G., Travasso, M. I., Romanenkov, V., Oettli, P., Newby, T., Ishigooka, Y. and Furuya, J. (2014), Historical changes in global yields: major cereal and legume crops from 1982 to 2006. Global Ecology and Biogeography, 23, 346–357, doi:10.1111/geb.12120.
Iizumi, T., and N. Ramankutty (2016) Changes in yield variability of major crops for 1981–2010 explained by climate change. Environmental Research Letters, 11, 034003, doi:10.1088/1748-9326/11/3/034003.
Iizumi T, Kotoku M, Kim W, West PC, Gerber JS, Brown ME (2018) Uncertainties of potentials and recent changes in global yields of major crops resulting from census- and satellite-based yield datasets at multiple resolutions. PLoS ONE 13(9): e0203809. https://doi.org/10.1371/journal.pone.0203809
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