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当前位置: 首页 > 文章 > 石家庄市农业生态系统能值演变趋势分析 湖北农业科学 2013,52 (6) 1469-1473
Position: Home > Articles > Evolution Trend Analysis of Agro-Ecosystem in Shijiazhuang City Area Hubei Agricultural Sciences 2013,52 (6) 1469-1473

石家庄市农业生态系统能值演变趋势分析

作  者：
李双江;胡亚妮
单  位：
河北科技大学环境科学与工程学院;河北科技大学图书馆
关键词：
农业生态系统;能值;演变趋势;石家庄市
摘  要：
应用能值分析方法对2005-2010年石家庄市农业生态系统能值总量、投入和产出结构以及各能值指标的变化进行了趋势分析。结果表明,研究期石家庄农业生态系统总能量投入呈下降趋势,总能值产出基本保持平稳,投入产出效率提高了8.1%。能值投入结构基本未变,农业生产主要依附于工业辅助能的投入;总能值产出中牧业和种植业的比重发生了一定的此消彼长,种植业能值消费向谷物和水果转移,牧产品消费由猪、牛、羊肉向家禽、奶类和蜂蜜转移;石家庄市农业生态经济系统整体功能较好,对自然资源的依赖性低,粮食生产安全性较高,但总辅助能投入增长空间不大;石家庄农业生态系统具有较强的可持续性与较大的发展空间,同时对环境和资源产生了一定的压力。石家庄市应调整其农业生态系统能值投入和产出结构,加大科技投入,发展生态农业,促进其可持续性。
译  名：
Evolution Trend Analysis of Agro-Ecosystem in Shijiazhuang City Area
作  者：
LI Shuang-jianga,HU Ya-nib (a.College of Environmental Science and Engineering;b.Library,Hebei University of Science and Technology,Shijiazhuang 050018,China)
关键词：
ago-ecosystem;energy;evolution trend;Shijiazhuang city
摘  要：
By using emergy analysis method,a trend analysis was made on the total energy,input-output structure,and energy indices of agro-ecosystem in Shijiazhuang area for 2005 to 2010.The result showed that in the studied period,the total energy input of agro-ecosystem in Shijiazhuang city was in a decreasing tendency,total energy output was basically maintained at a stable level,and the efficiency of energy output increased by 8.1%.The input structure was almost stable,agricultural production was mainly based on input of industry supplemental energy.The proportion of animal husbandry and farming in total energy output showed certain shift.Farming energy consumption has transferred to the grain and fruit,the consumption of animal husbandry product transferred from pig,beef and mutton to poultry,milk and honey.Shijiazhuang agro-ecological economic system had better function as a whole with low dependence on natural resources and higher security for food production,but total auxiliary energy input had little room to increase.Shijiazhuang agroecosystem had powerful sustainable development capacity and greater space to develop,but simultaneously it led some pressure to the ecological environment.Shijiazhuang city should adjust the structure of agricutural input and output energy,strengthen the research of agricultural science,and develop eco-agriculture to promote sustainability of its agricultural development.

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