毛乌素沙地县域典型农、牧户单元生态经济系统能值分析
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国家高等学校科技创新工程重大项目培育资金资助项目(706054)


The emergy analysis of the eco\|economy system in typical farming and grazing households in Mu Us sandland
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    摘要:

    农、牧户单元生态经济系统作为最基层的生产单位,关系着国家大政方针政策的落实和实施。运用能值理论及其分析方法,选择毛乌素沙地偏牧区的内蒙古自治区乌审旗苏力德苏木典型牧户生态经济系统和偏农区的陕西省榆阳区牛家梁镇典型农户生态经济系统作为研究对象,对两种不同产业偏重区产业模式的能值投入、产出结构状况进行对比分析,结合净能值产出率、能值投资率、环境负荷力、能值功率密度、单位面积生产力、人均能值用量、人均能值占有量、系统生产优势度、系统稳定性指数和系统可持续性指数共10项能值分析综合指标体系,全面系统地对农、牧户单元生态经济系统进行比较研究,定量描述典型农、牧户单元生态经济系统格局及其发展的总体特征。旨在为毛乌素沙地偏牧区和偏农区农、牧户经营层面的产业模式优化及发展提供策略选择。

    Abstract:

    As the most basic production unit, eco\|economy systems of farming and grazing households are of significance to the implementation and outcome of national policies. In this paper, eco\|economy systems of farming and grazing households, in Mu Us sandland acrossing Inner Mongolia Autonomous Region and Shaanxi Province,were studied by emergy theory and emergy analysis methods. The emergy input and output structure of different industrial models in Wushen banner, where grazing is dominant, and Yuyang district, where farming is the case, have been compared and analyzed. The total characteristics of pattern and development of typical eco\|economy systems of farming and grazing households are described and compared quantitatively by net emergy output ratio, emergy investment ratio, environmental loading ability, emergy power density, productivity of unit acreage, emergy cost per capita, emergy possession per capita, system production priority, system stability index and sustainability index. We hope our study could help to provide strategies for development and optimization of farming and grazing household industrial models in farming\|dominant zones and grazing\|dominant zones of Mu Us sandland.

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胡兵辉,廖允成*.毛乌素沙地县域典型农、牧户单元生态经济系统能值分析.生态学报,2009,29(9):4902~4910

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