Crop Yield and Temperature Changes in North China during 601–900 AD
Depending on the descriptions of crop yield and social response to crop failure/harvest from Chinese historical documents, we classified the crop yield of North China during 601–900 AD into six categories and quantified each category to be the crop yield grades. We found that the regional mean crop...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2014/137803 |
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| author | Haolong Liu Quansheng Ge Jingyun Zheng Zhixin Hao Xuezhen Zhang |
| author_facet | Haolong Liu Quansheng Ge Jingyun Zheng Zhixin Hao Xuezhen Zhang |
| author_sort | Haolong Liu |
| collection | DOAJ |
| description | Depending on the descriptions of crop yield and social response to crop failure/harvest from Chinese historical documents, we classified the crop yield of North China during 601–900 AD into six categories and quantified each category to be the crop yield grades. We found that the regional mean crop yield had a significant (P<0.01) negative trend at the rate of −0.24% per decade. The interannual, multiple-decadal, and century-scale variability accounted for ~47%, ~30%, and ~20% of the total variations of crop yield, respectively. The interannual variability was significantly (P<0.05) persistent across the entire period. The multiple-decadal variability was more dominant after 750 AD than that before 750 AD, while the century-scale variability was more dominant before 750 AD than that after 750 AD. The variations of crop yield could be partly explained by temperature changes. On one hand, the declining trend of crop yield cooccurred with the climate cooling trend from 601 to 900 AD; on the other hand, the crop yield was positively correlated with temperature changes at 30-year resolution with the correlation coefficient of 0.59 (P<0.1). These findings supported that high (low) crop yield occurred in the warming (cooling) climate. |
| format | Article |
| id | doaj-art-981a35146a444798b5927a9ccd5dc088 |
| institution | OA Journals |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-981a35146a444798b5927a9ccd5dc0882025-08-20T02:10:09ZengWileyAdvances in Meteorology1687-93091687-93172014-01-01201410.1155/2014/137803137803Crop Yield and Temperature Changes in North China during 601–900 ADHaolong Liu0Quansheng Ge1Jingyun Zheng2Zhixin Hao3Xuezhen Zhang4Institute of Geographic Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences (CAS), 11A Datun Road, Chaoyang, Beijing 100101, ChinaInstitute of Geographic Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences (CAS), 11A Datun Road, Chaoyang, Beijing 100101, ChinaInstitute of Geographic Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences (CAS), 11A Datun Road, Chaoyang, Beijing 100101, ChinaInstitute of Geographic Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences (CAS), 11A Datun Road, Chaoyang, Beijing 100101, ChinaInstitute of Geographic Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences (CAS), 11A Datun Road, Chaoyang, Beijing 100101, ChinaDepending on the descriptions of crop yield and social response to crop failure/harvest from Chinese historical documents, we classified the crop yield of North China during 601–900 AD into six categories and quantified each category to be the crop yield grades. We found that the regional mean crop yield had a significant (P<0.01) negative trend at the rate of −0.24% per decade. The interannual, multiple-decadal, and century-scale variability accounted for ~47%, ~30%, and ~20% of the total variations of crop yield, respectively. The interannual variability was significantly (P<0.05) persistent across the entire period. The multiple-decadal variability was more dominant after 750 AD than that before 750 AD, while the century-scale variability was more dominant before 750 AD than that after 750 AD. The variations of crop yield could be partly explained by temperature changes. On one hand, the declining trend of crop yield cooccurred with the climate cooling trend from 601 to 900 AD; on the other hand, the crop yield was positively correlated with temperature changes at 30-year resolution with the correlation coefficient of 0.59 (P<0.1). These findings supported that high (low) crop yield occurred in the warming (cooling) climate.http://dx.doi.org/10.1155/2014/137803 |
| spellingShingle | Haolong Liu Quansheng Ge Jingyun Zheng Zhixin Hao Xuezhen Zhang Crop Yield and Temperature Changes in North China during 601–900 AD Advances in Meteorology |
| title | Crop Yield and Temperature Changes in North China during 601–900 AD |
| title_full | Crop Yield and Temperature Changes in North China during 601–900 AD |
| title_fullStr | Crop Yield and Temperature Changes in North China during 601–900 AD |
| title_full_unstemmed | Crop Yield and Temperature Changes in North China during 601–900 AD |
| title_short | Crop Yield and Temperature Changes in North China during 601–900 AD |
| title_sort | crop yield and temperature changes in north china during 601 900 ad |
| url | http://dx.doi.org/10.1155/2014/137803 |
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