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稻田养蟹模式的生态经济分析
引用本文:陈飞星,张增杰.稻田养蟹模式的生态经济分析[J].应用生态学报,2002,13(3):323-326.
作者姓名:陈飞星  张增杰
作者单位:北京师范大学环境模拟与污染控制国家重点联合实验室,北京,100875
基金项目:北京生物源生物工程有限公司资助项目,北京师范大学环境模拟与污染控制国家重点实验室开放基金资助项目 (WES970 2 )
摘    要:在野外调查和实验数据分析的基础上 ,运用生态经济学原理研究了稻田养蟹模式的结构与功能、物流能流特征及其经济效益与生态环境效益 .结果表明 ,与单一稻作模式相比 ,稻田养蟹模式的综合效益较高 .从经济效益看 ,后者的土地纯收入、成本收益率和劳动生产率比前者分别增加 382 %、6 7.7%和2 95 % .从生态环境效益看 ,养蟹一年后 ,土壤中的TN、碱解N、TP、速效P、速效K和有机质分别增加10 .6、3.3、5 .8、11.7、3.5和 10 .5 % ,且每年可削减非点源N污染负荷 6 .375kg·hm-2 .

关 键 词:稻田养蟹模式  生态经济分析  生态农业
文章编号:1001-9332(2002)03-0323-04
修稿时间:2000年3月1日

Ecological economic analysis of a rice-crab model
CHEN Feixing and ZHANG Zengjie.Ecological economic analysis of a rice-crab model[J].Chinese Journal of Applied Ecology,2002,13(3):323-326.
Authors:CHEN Feixing and ZHANG Zengjie
Institution:State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing 100875. cf26@bnu.edu.cn
Abstract:Based on field investigation and experimental data analysis, ecological economic principles were applied to study the structure and function, the characteristics of material and energy flows, and the economic and ecological benefits of a rice-crab model. The results show that rice-crab model had a higher integral benefit than rice model, and its net income, cost-benefit ratio, and labor productivity were increased by 382%, 67.7% and 295%, respectively. In view of the ecological benefits produced, the total nitrogen, alkaline-hydrolyzal nitrogen, total phosphorus, rapidly available phosphorus, rapidly available potassium, and organic matter in the soil after 1-year carb breeding were increased by 10.6%, 3.3%, 5.8%, 11.7%, 3.5% and 10.5%, respectively. Moreover, 6.375 kg N.hm-2 of non-point source pollution load could be cut down annually.
Keywords:Rice  crab model  Ecological economic analysis  Ecological agriculture    
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