Five-Dimensional Straw Utilization Model and Its Impact on Carbon Emission Reduction in China

文献类型： 外文期刊

第一作者： Sun, Ning

作者： Sun, Ning;Gao, Chunyu;Bi, Yuyun;Seglah, Patience Afi;Wang, Yajing;Ding, Yahui

作者机构：

关键词： straw; five-dimensional straw utilization model; technology and status quo; carbon emissions; carbon accounting methods

期刊名称：SUSTAINABILITY （ 影响因子：3.889； 五年影响因子：4.089 ）

ISSN：

年卷期： 2022 年 14 卷 24 期

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收录情况： SCI

摘要： Enormous quantities of straw in China are burnt in open fields or discarded randomly, leading to a serious waste of biomass resources and environmental pollution. To accelerate sustainable development, straw resources must be used efficiently and reduce carbon emissions. Based on a systematic literature review, this study summarizes China's latest development in straw utilization. It analyzes the accounting methods, carbon emission reduction effects and potential of straw utilization. The study highlights that straw utilization in China can be categorized into five-dimensional straw utilization models (FDSUM). The cost of collection, storage and transportation, and straw utilization technology are the main factors affecting straw utilization. FDSUM contributes greatly to agricultural carbon reduction. Straw-to-fertilizer has the highest contribution, and straw-to-fuel has the largest carbon emission reduction potential. The carbon emission reduction from straw-to-fuel utilization in 2020 was 63.43 x 10(9) kg CO2. In addition, China has not developed a standardized carbon accounting method for straw utilization. China needs to prioritize straw-to-fertilizer and straw-to-fuel conversion and develop low-carbon production technologies. This study will serve as a reference to further improve the utilization of straw in China and provide preliminary ideas for establishing a unified national carbon accounting system for straw utilization.

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