农业生态效率的时空差异及影响因素

发布时间：2018-01-06 11:00

本文关键词：农业生态效率的时空差异及影响因素　出处：《华南农业大学学报(社会科学版)》2016年02期 　论文类型：期刊论文

【摘要】：以系统论视角构建了农业生态效率测算的网络结构,利用网络DEA模型对我国2005—2013年30个省市农业生态系统整体效率及各子系统效率值进行测度,并对其变化趋势进行收敛检验,进而揭示农业生态效率的关键影响因素,探索农业生态效率提升的实施路径。实证结果显示:我国农业生态整体效率处于较低水平,农业生态效率提升潜力巨大;四大区域差异较大,社会和生态系统的低效成为制约东北地区生态效率提高的因素,经济系统的低效是中西部地区效率增长的瓶颈因素。收敛检验结果显示,经济系统的区域差异呈扩大趋势,社会和生态系统差异性较稳定。农业生态效率与机械密度、人均农业GDP呈正相关关系,与农业市场化程度、受灾率、财政支农力度、工业化发展水平呈负相关关系。虚拟变量的引入,验证了农业是受自然和地理因素影响较大的产业,区位选择对农业生态效率产生重要影响。
[Abstract]:From the perspective of the construction of the network structure of agricultural eco efficiency measurement based on the system theory, using the network DEA model on the efficiency of overall efficiency and sub system in China from 2005 to 2013, 30 provinces agricultural ecosystem value measure and convergence test of the trend and the key influencing factors and reveal the agricultural eco efficiency, explore the implementation path of ascension agricultural eco efficiency. The empirical results show that: the overall efficiency of agricultural ecology in China is at a low level, to enhance the efficiency of agricultural ecological potential; four regional differences, social and ecological system to improve eco efficiency of inefficient factors restricting the northeast region, the economic system is inefficient bottlenecks. The convergence efficiency of growth in central and western regions test results show that the regional differences of the economic system is expanding, the difference in social and ecological system is more stable. The agricultural ecological efficiency and mechanical density, The per capita agricultural GDP was positively correlated with the degree of agricultural market, affected by the rate of financial support is negatively related to the level of industrial development. The introduction of dummy variables, agriculture is verified by natural and geographical factors of the industry, the location selection has an important effect on agricultural eco efficiency.

【作者单位】：中南大学商学院;中南大学金属资源战略研究院;
【基金】：国家自然科学基金面上项目(71171203,71573282)
【分类号】：F323.22
【正文快照】： 一、引言农业是第一生态产业,是国民经济和自然生态的双重基础。伴随着农业的快速发展,单一地追求经济效益使得农业污染日趋严重。2013年全国调查数据显示,农业污染中化学需氧量和氨氮排放量分别为1125.76万吨和7791.99万吨,占全国化学需氧量和氨氮排放量的47.85%和31.72%,农

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