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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (26): 232-238.

所属专题： 现代农业发展与乡村振兴； 农业生态

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

江西省农业生态经济系统的能值产出分析

康文星 沙甲先 何介南   

  • 收稿日期:2011-05-04 修回日期:2011-07-11 出版日期:2011-10-15 发布日期:2011-10-15

Emergy Output Analysis of Agro-ecological Economic System of Jiangxi Province

  • Received:2011-05-04 Revised:2011-07-11 Online:2011-10-15 Published:2011-10-15

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摘要：

为了客观地评价江西省农业生态系统的能值产出结构及其发展趋势，为该系统可持续发展的决策提供科学依据，笔者运用能值理论和能值分析方法，研究江西省农业生态系统的能值产出。结果表明：1990—2009年，江西省农业系统能值产出1.73×1023~1.82×1023 sej。其中，种植业占54.01%~61.36%，畜牧业占27.15%~29.78%，渔业占8.01%~12.81%，林业占3.34%~4.11%；谷物和油料作物产出能值在种植业总产出能值中的比重为78.19%~79.18%，猪肉产品能值在畜牧业总产出能值中的比重为74.5%~77.4%；20年内种植业产出能值年平均增长速率为0.85%，畜牧业为2.28%，林业为2.16%，渔业为5.46%；经过20年的发展，系统产业结构发生改变，种植业产出能值比重由原来的61.39%下降到54.01%，牧业和渔业由原来的27.15%、8.01%分别提升到29.78%、12.42%；谷物和油料作物产出能值在种植业能值中占较高比例，猪肉产出能值占畜牧业绝对地位，江西省农业系统经营过程中保守性、传统性较强；根据畜牧业增长趋势，将会成为江西省农业系统的引擎和主导产业，渔业生产的强势劲头，江西省农业系统将有可能出现种植、畜牧、渔业“三强鼎立”的局面。

关键词: 小菜蛾, 小菜蛾, 识别, 图像处理

Abstract:

In order to evaluate the emergy output structure and its trend of agro-ecological economic system of Jiangxi Province, and provide the basis for the formulation of the countermeasures for the sustainable development of Jiangxi agricultural system, the author studied the emergy output of agro-ecological economic system of Jiangxi Province, and analyzed emergy output structure, its tracks of history of succession and the trend in development. The results showed that emergy output of agricultural system in Jiangxi Province was 1.73×1023-1.82×1023 sej from 1990 to 2009, while crop production made up 54.01%-61.36%, animal husbandry accounted for 27.15%-29.78%, fishing took up 8.01%-12.81%, forestry holded 3.34%-4.11%; output emergy of grain and oil-bearing crops accounted 78.19%-79.18% for total output emergy of grain and oil-bearing crops accounted 78.19%-79.18% for total output emergy of crop production; pork products took up 74.5%-77.4% for total output emergy of animal husbandry; for 20 years average growth rate per year of output emergy of crop production was 0.85%, animal husbandry was 2.28%, forestry was 2.26%, fishing was 5.46%; through development of 20 years, industrial structure of system changed a lot, output emergy proportion of planting declined from 61.39% to 54.01%, while animal husbandry and fishing increased from 27.15%, 8.01% to 29.78%, 12.42%, the status of crop production began shaking, output emergy of grain and oil-bearing crops possed high proportion in crop production emergy, pork products took up dominant position of animal husbandry, the agricultural system was traditional and conservative according to the increasing trend of animal husbandry, animal husbandry would be the leading industry of agricultural system in Jiangxi Province, animal husbandry also presented strong momentum, agricultural system of Jiangxi might present the situation of top 3 kingdoms of crop production animal husbandry and fishing in future.