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稻鸭共作有机农业模式的能值评估
引用本文:席运官,钦佩.稻鸭共作有机农业模式的能值评估[J].应用生态学报,2006,17(2):237-242.
作者姓名:席运官  钦佩
作者单位:1. 南京大学生命科学学院,南京,210093;国家环保总局南京环境科学研究所,南京,210042
2. 南京大学生命科学学院,南京,210093
摘    要:应用能值分析方法对稻鸭共作有机农业模式(模式Ⅰ)和对应的稻麦常规生产模式(模式Ⅱ)进行比较研究,并比较了两种模式的生态经济效益.结果表明,模式Ⅰ的能值效益高,自组织能力、可持续发展能力强,产品安全性高,净能值产出率(EYR)、系统产出能值反馈率(FYE)、能值可持续指标(ESI)分别是模式Ⅱ的1.57、14.1和8.71倍;基于能值的产品安全性指标(EIPS)模式Ⅰ为0,模式Ⅱ为-0.66;模式Ⅰ对环境的压力小于模式Ⅱ,能值投资率(EIR),环境负载率(ELR)分别是模式Ⅱ的40.1%和18.3%;但模式Ⅰ的经济效益低于模式Ⅱ,其产出、毛收入和净效益分别低于模式Ⅱ15.7%、9.6%和29.6%;以能值 货币价值计算,模式Ⅰ的产投比、毛收入和净收入分别高于模式Ⅱ50%、102.6%和136.4%.随着生产系统的优化和市场对有机食品认知程度的提高,模式Ⅰ的经济效益具有提高的潜力.

关 键 词:有机农业  稻鸭共作  稻麦轮作  能值评估  可持续性
文章编号:1001-9332(2006)02-0237-06
收稿时间:2005-01-20
修稿时间:2005-05-23

Emergy value evaluation on rice-duck organic farming mode
XI Yunguan,QIN Pei.Emergy value evaluation on rice-duck organic farming mode[J].Chinese Journal of Applied Ecology,2006,17(2):237-242.
Authors:XI Yunguan  QIN Pei
Institution:1.School of Life Science, Nanjing University, Nanjing 210093, China ; 2.Nanjing Institute of Environmental Science, State Environmental Protection Administration, Nanjing 210042, China
Abstract:Employing emergy value evaluation method, this paper compared the ecological and economic benefits of rice-duck organic farming system (mode I) and conventional rice-wheat rotation system (mode II) in Shanghai suburb. The results showed that mode I had better emergy benefits, higher self-organizing ability and sustainability, and higher product safety. The net emergy yield ratio (EYR), feedback ratio of yield emergy (FYE), and emergy sustainable index (ESI) of mode I were respectively 1.57, 14.1, and 8.71 times as much as those of mode II, and the emergy index of product safety (EIPS) was 0 in mode I but -0.66 in mode II. The emergy investment ratio (EIR) and environmental loading ratio (ELR) of mode I were 40.1% and 18.3% of mode II, respectively, suggesting that mode I had less environmental pressure than mode II. Mode I had lower economic benefits than mode II. The economic output, gross income, and net income of mode I were 15.7%, 9.6%, and 29.6% less than those of mode II , respectively. As for Em dollars, the output, gross income, and net income of mode I were respectively 50%, 102.6%, and 136.4% higher than those of mode II. With the system optimization and the development of organic food market, mode I had the potential to improve its economic benefits.
Keywords:Organic farming  Rice-duck farming system  Rice-wheat rotation system  Emergy value evaluation  Sustainability  
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