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| Climate Change Impact and Its Contribution Share to Paddy Rice Production in Jiangxi, China |
| LI Wen-juan, TANG Hua-jun, QIN Zhi-hao, YOU Fei, WANG Xiu-fen, CHEN Chang-li, JI Jian-hua , LIU Xiu-mei |
1、Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
2、Key Laboratory of Agri-Informatics, Ministry of Agriculture/Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
3、International Institute for Earth System Science, Nanjing University, Nanjing 210093, P.R.China
4、Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
5、Institute of Soil Fertilizer and Resource Environment, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, P.R.China |
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摘要 In the study, an improved approach was proposed to identify the contribution shares of three group factors that are climate, technology and input, social economic factors by which the grain production is shaped. In order to calibrate the method, Jiangxi Province, one of the main paddy rice producers in China was taken as an example. Based on 50 years (1961-2010) meteorological and statistic data, using GIS and statistical analysis tools, the three group factors that in certain extent impact China’s paddy rice production have been analyzed quantitatively. The individual and interactive contribution shares of each factor group have been identified via eta square (η2). In the paper, two group ordinary leasr square (OLS) models, paddy models and climate models, have been constructed for further analysis. Each model group consists of seven models, one full model and six partial models. The results of paddy models show that climate factors individually and interactively contribute 11.42-15.25% explanatory power to the variation of paddy rice production in the studied province. Technology and input factors contribute 16.17% individually and another 8.46% interactively together with climate factors, totally contributing about 25%. Social economic factors contribute about 7% of which 4.65% is individual contribution and 2.49% is interactive contribution together with climate factors. The three factor groups individually contribute about 23% and interactively contribute additional 41% to paddy rice production. In addition every two of the three factor groups also function interactively and contribute about 22%. Among the three factor groups, technology and input are the most important factors to paddy rice production. The results of climate models support the results of paddy models, and display that solar radiation (indicated by sunshine hour variable) is the dominate climate factor for paddy rice production.
Abstract In the study, an improved approach was proposed to identify the contribution shares of three group factors that are climate, technology and input, social economic factors by which the grain production is shaped. In order to calibrate the method, Jiangxi Province, one of the main paddy rice producers in China was taken as an example. Based on 50 years (1961-2010) meteorological and statistic data, using GIS and statistical analysis tools, the three group factors that in certain extent impact China’s paddy rice production have been analyzed quantitatively. The individual and interactive contribution shares of each factor group have been identified via eta square (η2). In the paper, two group ordinary leasr square (OLS) models, paddy models and climate models, have been constructed for further analysis. Each model group consists of seven models, one full model and six partial models. The results of paddy models show that climate factors individually and interactively contribute 11.42-15.25% explanatory power to the variation of paddy rice production in the studied province. Technology and input factors contribute 16.17% individually and another 8.46% interactively together with climate factors, totally contributing about 25%. Social economic factors contribute about 7% of which 4.65% is individual contribution and 2.49% is interactive contribution together with climate factors. The three factor groups individually contribute about 23% and interactively contribute additional 41% to paddy rice production. In addition every two of the three factor groups also function interactively and contribute about 22%. Among the three factor groups, technology and input are the most important factors to paddy rice production. The results of climate models support the results of paddy models, and display that solar radiation (indicated by sunshine hour variable) is the dominate climate factor for paddy rice production.
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Received: 11 September 2013
Accepted:
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| Fund: The study is financed by the National Basic Research Program of China (2010CB951502). |
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Corresponding Authors:
LI Wen-juan, Tel: +86-10-82108774, Fax: +86-10-82106225, E-mail: liwenjuan@caas.cn
E-mail: liwenjuan@caas.cn
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| About author: LI Wen-juan, Tel: +86-10-82108774, Fax: +86-10-82106225, E-mail: liwenjuan@caas.cn |
Cite this article:
LI Wen-juan, TANG Hua-jun, QIN Zhi-hao, YOU Fei, WANG Xiu-fen, CHEN Chang-li, JI Jian-hua , LIU Xiu-mei.
2014.
Climate Change Impact and Its Contribution Share to Paddy Rice Production in Jiangxi, China. Journal of Integrative Agriculture, 13(7): 1565-1574.
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