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首页> 外文期刊>The Science of the Total Environment >To burn or retain crop residues on croplands? An integrated analysis of crop residue management in China
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To burn or retain crop residues on croplands? An integrated analysis of crop residue management in China

机译：在农田上燃烧或保留农作物残留物？中国农作物残留管理综合分析

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摘要

Crop residue burning influences human health and global climate change. In China-the world's largest crop residue producer-farmers burn almost one quarter of their crop residues in the field after harvest, despite the government providing financial incentives such as subsidies to retain crop residues. This study combined economic analyses with simulations of soil carbon accumulation and carbon emission reduction associated with different residue management practices to determine the minimum level of incentives needed for Chinese farmers to shift from burning to retaining crop residues for generating carbon benefits. Simulation results showed that [1] the density of topsoil organic carbon in China's croplands would have increased from about 21.8 t ha(-1) in 2000 to 23.9 t ha(-1) in 2010, and soil organic carbon sequestration would have reached 24.4 Tg C yr(-1) if farmers had shifted from burning to retaining crop residues on croplands during this period; and [2] retaining crop residues would have avoided about 149.9 Tg of CO2 emission per year. Economic analyses showed that [1] existing subsidies in all regions of China, except Northeast China, only accounted for 18-82% of the incentives required for farmers to shift from burning to crop residue retention; [2] Northeast China required the lowest incentive (287 CNY ha(-1)), while eastern China required the highest (837 CNY ha(-1)); and [3] the prevailing market prices (1.4-60.2 CNY tCO(2)e(-1)) in China's seven pilot carbon markets seem to be below the required incentives (39.6-189.1 CNY tCO(2)e(-1)). Our study suggests that the Chinese government should increase subsidies or seek innovative incentive schemes to encourage farmers to change their crop residue management practices for global climate change mitigation and health benefits. (C) 2019 Published by Elsevier B.V.
机译：作物残渣燃烧影响人类健康和全球气候变化。在中国这个世界上最大的农作物残渣生产者，尽管政府提供了财政激励措施，例如保留农作物残渣的补贴，农民在收获后仍在田间燃烧了近四分之一的农作物残渣。这项研究将经济分析与对土壤碳累积和减少碳排放的模拟（与不同的残留物管理实践相关）相结合，以确定中国农民从燃烧变为保留残留物以产生碳效益所需的最低激励水平。模拟结果表明，[1]中国农田表层有机碳的密度将从2000年的约21.8 t ha（-1）增加到2010年的23.9 t ha（-1），土壤有机碳固存量将达到24.4 Tg C yr（-1），如果农民在此期间从燃烧转变为保留农田上的农作物残留； [2]保留农作物残留物每年将避免约149.9 Tg的二氧化碳排放。经济分析表明，[1]除东北地区外，中国所有地区的现有补贴仅占农民从焚烧转向保留作物残渣所需的激励措施的18-82％； [2]东北地区要求的奖励最低（287元/公顷（-1）），而东部地区要求的奖励最高（837元/公顷（-1））； [3]中国七个试点碳市场的现行市场价格（1.4-60.2人民币tCO（2）e（-1））似乎低于所需的激励措施（39.6-189.1人民币tCO（2）e（-1） ）。我们的研究表明，中国政府应增加补贴或寻求创新的激励计划，以鼓励农民改变其作物残留管理做法，以减轻全球气候变化并带来健康益处。 （C）2019由Elsevier B.V.发布

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  • 来源
    《The Science of the Total Environment》 |2019年第20期|141-150|共10页
  • 作者

    Chen Jinghua; Gong Yazhen; Wang Shaoqiang; Guan Baozhu; Balkovic Juraj; Kraxner Florian;

  • 作者单位

    Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China|Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;

    Renmin Univ China, Sch Environm & Nat Resources, 59,Zhongguancun St, Beijing 100872, Peoples R China;

    Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China|Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;

    Peking Univ, Sch Adv Agr Sci, Beijing 100871, Peoples R China|Peking Univ, Natl Sch Dev, Beijing 100871, Peoples R China;

    IIASA, Ctr Landscape Resilience & Management CLR, Ecosyst Serv & Management Program ESM, Schlosspl 1, A-2361 Laxenburg, Austria|Comenius Univ, Dept Soil Sci, Fac Nat Sci, Bratislava 84215, Slovakia;

    IIASA, Ctr Landscape Resilience & Management CLR, Ecosyst Serv & Management Program ESM, Schlosspl 1, A-2361 Laxenburg, Austria;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Crop residue management; Soil carbon; Carbon emissions; Economic analysis; China;

    机译：作物残留管理土壤碳碳排放经济分析中国;

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