毛乌素沙地县域典型农、牧户单元生态经济系统能值分析

发布时间：2018-01-26 13:49

本文关键词： 能值分析农、牧户单元生态经济系统毛乌素沙地不同产业偏重区　出处：《生态学报》2009年09期 　论文类型：期刊论文

【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 unit of production, the eco-economic system of agricultural and pastoral units is related to the implementation and implementation of national policies and policies. The use of emergy theory and its analysis method. The ecological and economic system of typical pastoral households of Sulide Sumu in Inner Mongolia Autonomous region and Niujialiang Township of Yuyang District in Shaanxi Province is selected as the research object. This paper makes a comparative analysis of the emergy input and output structure of the two industrial models, combining with the net emergy output rate, emergy investment rate, environmental load force, emergy power density, and productivity per unit area. Per capita emergy consumption, per capita emergy possession, system production dominance, system stability index and system sustainability index were 10 items of comprehensive index system of emergy analysis. The ecoeconomic system of herdsman unit was compared to describe the pattern of typical agriculture and herdsman unit ecological economy system and the general characteristics of its development. The purpose was to deviate pastoral area and farming area in Maowusu sandy land. The optimization and development of the industrial model at the level of herdsmen's management provide the strategic choice.
【作者单位】：西北农林科技大学资源环境学院;农学院;
【基金】：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)
【分类号】：X171;F206
【正文快照】： 生态经济系统是由生态系统和经济系统相互交织、相互作用、相互耦合而成的复合系统。在生态系统与经济系统之间有物质、能量和信息的交换,与此同时,还存在着价值流的循环与转换。因而,生态经济系统是一个具有独立的特征、结构和机能的生态经济复合体,并有其自身运动(物质运转

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