A common climate–yield relationship for wheat and barley in Japan and the United Kingdom
Ishikawa, S., Nakashima, T., Hare, M.C. and Kettlewell, P.S. (2024) A common climate–yield relationship for wheat and barley in Japan and the United Kingdom. Climate, 12 (8). ISSN 2225-1154
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P Kettlewell et al. A common climate UPLOAD.OCR. 2.pdf - Published Version Available under License Creative Commons Attribution. Download (2MB) | Preview |
Abstract
Wheat and barley yields in Japan are considerably lower than those in the UK, even where similar Climate Zones (CZs) of relatively cold and humid nature are shared. In order to understand this difference, it is first necessary to find out if any common climate–yield relationship exists between the two countries. The Climate Zonation Scheme (CZS) developed in the Global Yield Gap Atlas (GYGA) was used to analyse actual yield (Ya) with three climatic factors of the GYGA-CZS, i.e., growing degree days (GDD), aridity index (AI) and temperature seasonality (TS). A significant relationship was found between AI scores and Ya values across the two countries. Ya values decreased with an increase in AI scores; in other words, lower yields are associated with higher AI scores. In addition, the degree of yield reduction with the rise in AI scores was greater in Japan than in the UK. The present study also proposed a novel method to link CZs of the GYGA-CZS to regional classification units, especially for countries where statistical crop yield data are available only at a coarse scale.
| Item Type: | Article |
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| Keywords: | climate classification, Global Yield Gap Atlas (GYGA), growing degree days, aridity index, temperature seasonality, spatial framework, municipality, upland, paddy, rice |
| Divisions: | Agriculture and Environment (from 1.08.20) |
| Depositing User: | Mrs Rachael Giles |
| Date Deposited: | 25 Oct 2024 10:10 |
| Last Modified: | 25 Oct 2024 10:10 |
| URI: | https://hau.repository.guildhe.ac.uk/id/eprint/18130 |
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