Relationships between Global Climate Indices and Rain-fed Crop Yields in Highland of South-Central Java, Indonesia
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- NUGROHO Bayu D.A.
- The United Graduate School of Agricultural Sciences, Iwate University
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- PRIMA Ardiansyah O.D.
- Faculty of Software and Information Science, Iwate Prefectural University
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- KANNO Hiromitsu
- NARO Tohoku Agriculture Research Center
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- SAMESHIMA Ryoji
- Faculty of Agriculture, Hokkaido University
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- FUJII Hiroshi
- Faculty of Agriculture, Yamagata University
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- LOPEZ Larry C.M.
- Faculty of Agriculture, Yamagata University
Bibliographic Information
- Other Title
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- インドネシアジャワ島南央部における高地の天水農業の収量とグローバル指数との関係について
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Description
Although there has been a high interest to investigate the relationship between climate and crop yields in Indonesia, little evidence is available for crops in highland of the country. This study evaluates the relationships between global climate indices (Southern Oscillation Index, SOI; sea surface temperature, SST) and rain-fed crop yields in Gunungkidul district, highland of South-Central Java. Principal Component Analysis (PCA) approach was used to summarize the averaged SSTs during planting season for the El Niño monitoring regions: IOBW (Indian Ocean Basin-Wide), Niño.West and Niño.3. Crops yield of each sub-district of the area was detrended using a 5-year moving average to enhance reliability of the data. For some sub-districts, the first principal component of SSTs was negatively correlated to crop yield residuals of corn and soybean while SOI was positively correlated to that of corn and dryland paddy.
Journal
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- Journal of Geography (Chigaku Zasshi)
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Journal of Geography (Chigaku Zasshi) 122 (3), 438-447, 2013
Tokyo Geographical Society
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Details 詳細情報について
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- CRID
- 1390282679215252480
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- NII Article ID
- 130003373647
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- NII Book ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
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- NDL BIB ID
- 024772846
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed