文献类型： 外文期刊

第一作者： Ling Lin

作者： Ling Lin;Maimaitizunong, Ayitula;Ling Lin;Shuai Yanju;Sun Zichuan;Zhang Haoran;Zhan Ming;Li Chengfang;Wang Jinping;Jiang Yang;Maimaitizunong, Ayitula;Cao Cougui;Xu Ying;Zhang Zhisheng;Wang Bin;Liangzhi You;Liangzhi You

作者机构：

关键词： Carbon footprint; Economicbenefit; Rice production system; GHG mitigation practices; Rotation; Integrated farming system

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 791 卷

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收录情况： SCI

摘要： In recent years, many rotational and integrated rice production systems coupled with several greenhouse gas (GHG) emissions mitigation practices have been developed and adopted for demand of low carbon production. However, there have been only few studies about comparisons on the balance between high production and mit-igation of GHG emissions in different rice production systems. We therefore aimed to evaluate economic output and carbon footprint of different rice production systems, based on several long-term experiments conducted by our lab. CH4 and N2O emission were measured by the same static chamber/gas chromatogram measurement pro-cedure in different rice production systems, including rice-fallow, rice-rapeseed, rice-wheat, double rice, and in-tegrated rice-crayfish production system. Then, we applied the DeNitrification DeComposition model to simulate CH4 and N2O emission over different years under the same condition for comparison. Carbon footprint was cal-culated following the process-based life cycle assessment (PLCA) methodology. The economic benefit of rice pro-duction systems was assessed by cost-benefit analysis. According to the analysis, the double-rice production system exhibited the highest intensity of carbon footprint (ICF = 4.14 kg CO2-eq yuan(-1)), rain-fed treatment in the rice-rapeseed system had the lowest (ICF = 0.68 kg CO2-eq yuan(-1)). The intensity of carbon footprint in different treatments in the integrated rice-crayfish production system was around 0.8 kg CO2-eq yuan(-1). Over-all, the results of this case study suggest: (1) the proposed practices in different rice production systems are no straw returning (rice-fallow), no-tillage without straw returning (rice-wheat), rain-fed farming (rice-rapeseed), no insect and no inoculation (double rice), and feeding with straw returning (rice-crayfish); (2) rotational and integrated systems can achieve high net output with low carbon emission; (3) reducing the amount of nitrogenous fertilizer application is the most important and effective GHG mitigation practice for rotational systems. (C) 2021 Published by Elsevier B.V.

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