文章摘要
稻麦两熟农田径流养分循环利用模式的能值分析与生态补偿标准测算
Emergy analysis and ecological compensation standard of the runoff nutrient recycling system in rice-wheat rotation systems
投稿时间:2019-03-21  修订日期:2019-04-25
DOI:
中文关键词: 稻麦轮作  径流养分流失  循环农业  能值分析  生态补偿
英文关键词: Rice-wheat rotation  Nutrient loss through runoff  Recycling agriculture  Emergy analysis  Ecological compensation
基金项目:江苏省农业科技自主创新资金重点项目 (CX(16)1003-13)
作者单位E-mail
朱冰莹 南京农业大学人文与社会发展学院 zby@njau.edu.cn 
陈留根 江苏省农业科学院循环农业研究中心  
盛婧 江苏省农业科学院循环农业研究中心  
郑建初 江苏省农业科学院循环农业研究中心  
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中文摘要:
      [目的]旨在探讨稻麦两熟农田径流养分循环利用模式的运作可持续性和生态补偿标准。[方法] 应用生产-生态系统能值测算方法,综合分析其环境安全性和运作持续性;结合生产运营实践,深入分析了基于生命周期过程的物能投入与输出,提出生态补偿依据;基于能值收益差异并估算出其持续运行的生态补偿标准。[结果] 与传统模式相比,径流养分循环模式的环境负载率降低了24.27%,而能值可持续发展指数和环境安全性指数分别提高31.24%和37.41%。径流养分循环模式的生物辅助能投入增加了42.16%而污染产能降低了70.02%。养分循环模式的氮磷养分环境排放量分别降低了34.85%和30.43%。同时,循环模式的净能值收益比传统模式低2.15×1016 Sej?hm-2?a-1。[结论] 径流养分循环模式提高了环境安全性而降低了经济效益,其生态补偿标准应不低于4153.78¥?hm-2?a-1。
英文摘要:
      [Aim] To investigate the sustainability and the ecological compensation standard for the runoff nutrient recycling system in the rice-wheat rotation systems. [Methods] This study analyzed the environmental safety and sustainability of operation based on emergy analysis, and proposed the evidence of ecological compensation based on the energy and material flow analysis in the whole life cycle of production practice; as well as calculated the payment standard baed on the net emergy benefit difference. [Results] Emergy analysis suggested that environmental loading ratio were reduced by 24.27%, while emergy sustainability index and environmental safety index were increased by 31.24% and 37.41% under the nutrient recycling system, respectively. Energy flow analysis showed that biological auxiliary energy input was increased by 42.16%, while energy output through pollutants were reduced by 70.02%. Material flow analysis showed that the recycling system decreased nitrogen and phosphorus output to the surrounding water environment by 34.85% and 30.43%. Likewise, the net emergy benefit was reduced by 3.40×1016 Sej?hm-2?a-1 for the recycling system compared with the conventional system. [Conclusion] These results suggested that the recycling system improved environmental safety but reduced economic profit, which thus requiring ecological compensation for its ecosystemic services, and the payment standard is estimated to be 4153.78¥?hm-2?a-1.
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