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Cropping system innovation for coping with climatic warming in China

文献类型: 外文期刊

作者: Deng, Aixing 1 ; Chen, Changqing 2 ; Feng, Jinfei 3 ; Chen, Jin 4 ; Zhang, Weijian 1 ;

作者机构: 1.Chinese Acad Agr Sci, Minist Agr, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Beijing 100081, Peoples R China

2.Nanjing Agr Univ, Inst Appl Ecol, Nanjing 210095, Jiangsu, Peoples R China

3.Chinese Acad Agr Sci, China Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China

4.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Jiangxi, Peoples R China

关键词: Global warming;Food security;Grain production;Response and adaptation;Carbon emission mitigation

期刊名称:CROP JOURNAL ( 影响因子:4.407; 五年影响因子:5.687 )

ISSN: 2095-5421

年卷期: 2017 年 5 卷 2 期

页码:

收录情况: SCI

摘要: China is becoming the largest grain producing and carbon-emitting country in the world, with a steady increase in population and economic development. A review of Chinese experiences in ensuring food self-sufficiency and reducing carbon emission in the agricultural sector can provide a valuable reference for similar countries and regions. According to a comprehensive review of previous publications and recent field observations, China has experienced on average a larger and faster climatic warming trend than the global trend, and there are large uncertainties in precipitation change, which shows a non-significantly increasing trend. Existing evidence shows that the effects of climatic warming on major staple crop production in China could be markedly negative or positive, depending on the specific cropping region, season, and crop. However, historical data analysis and field warming experiments have shown that moderate warming, of less than 2.0 degrees C, could benefit crop production in China overall. During the most recent warming decades, China has made successful adaptations in cropping systems, such as new cultivar breeding, cropping region adjustment, and cropping practice optimization, to exploit the positive rather than to avoid the negative effects of climatic warming on crop growth. All of these successful adaptations have greatly increased crop yield, leading to higher resource use efficiency as well as greatly increased soil organic carbon content with reduced greenhouse gas emissions. Under the warming climate, China has not only achieved great successes in crop production but also realized a large advance in greenhouse gas emission mitigation. Chinese experiences in cropping system innovation for coping with climatic warming demonstrate that food security and climatic warming mitigation can be synergized through policy, knowledge, and technological innovation. With the increasingly critical status of food security and climatic warming, further efforts should be invested in new agricultural policy, knowledge and technology creation, and popularization of climate-smart agriculture, and more financial investments should be made in field infrastructure development to increase cropping system resilience in China. (C) 2016 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V.

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