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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (15): 0-.

所属专题： 农业生态

• 资源 环境 生态 土壤 气象 •    下一篇

河北种植生态经济系统能值分析

龚宇   

  • 收稿日期:2009-03-20 修回日期:2009-04-21 出版日期:2009-08-05 发布日期:2009-08-05

Emergy analysis of eco-economic system of planting in Hebei province

  • Received:2009-03-20 Revised:2009-04-21 Online:2009-08-05 Published:2009-08-05

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摘要： 摘要:运用能值分析方法对2007年河北省种植业生态经济系统中的投入和产出状况进行了系统分析。结果表明：总能值投入为7.97×1022sej，作物能值总产出为3.24×1022sej；不可更新工业辅助能占总能值投入的 52.9%，可更新能值投入占总能值投入的比例为47.1%（可更新环境资源占20.9 %、可更新有机能占26.1%），系统能值货币比率为1.98×1011sej.元-1，净能值产出率为0.51，环境负荷率为1.13，系统可持续发展指数为0.45，种植业生态经济系统整体的回报率较低；主要作物的能值产出依次为：玉米>小麦>蔬菜>高粱>豆类>花生。

关键词: 烟蚜, 烟蚜, 温度, 黄瓜花叶病毒, 发育, 繁殖

Abstract: Abstract:The analysis of emergy input and output of eco-economic system of planting in Hebei province in 2007 was conducted by using emergy analysis method. It showed that, the total emergy input and output of planting were 7.97×1022sej and 3.24×1022sej respectively. Of the total emergy input, unrenewable industrial emergy was 52.9%, and renewable emergy was 47.1% which including 20.9% of renewable environment resource and 26.1% of renewable organic emergy. The ratio of emergy and money, net emergy ratio, load ratio of environment, and sustainable development index were 1.98×1011sej.yuan-1, 0.51, 1.13, and 0.45, respectively. Return from planting was low in general, and the emergy output of the main crops was maize > wheat > sorghum > legume > peanut.