基于超效率DEA模型的甘肃省农用地利用效率分析

发布时间：2018-02-03 00:19

本文关键词： 农用地超效率DEA 超效率BCC 影子价格松弛变量　出处：《甘肃农业大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文在农用地利用效率研究中引入超效率数据包络分析模型,以克服传统数据包络分析方法无法细化有效单元的局限,采用投影分析和影子价格分别分析有效评价单元的差异,无效评价单元产生的原因和投入产出变化对效率的影响,同时对甘肃省农用地利用效率时间变化动态和区域差异进行了分析。研究结果表明:(1)2006-2012年间,甘肃省农业资源投入要素的组合效率相对高,均值为0.927。从空间角度来看,绝大部分州市的农用地节约利用效率较高。2006-2012年甘肃农用地利用效率较高的地区有一定的聚集,高效区多分布在河西走廊地区,之后是陇东地区。甘南州、临夏州畜牧业开发相对较多,促使DEA有效。陇中地区和酒泉地区农业自然条件先天不足。陇南地区山地较多但水热条件充足合理安排投入,能使DEA有效。(2)根据对超效率下纯技术效率和规模效率进行对比分析,可以得到各州市内部效率提高主要是受技术改进或投入增加导致的,对于纯技术效率排名大于规模效率排名的评价单元,其农用地利用水平提高主要依靠农业生产技术的转变;对于纯技术效率排名大于规模效率排名的评价单元,其效率水平的提高更多是依靠增加投入得到的。(3)根据规模收益,甘肃省农用地集约利用多处于规模收益不变或规模递减状态,说明甘肃省在扩大农业生产规模时不能盲目,仍需关注利用方式是否粗放的问题。(4)运用超效率下的投影分析,解决了只能对非有效评价单元进行改进的方法,或只根据超效率评价值将所有投入等比例进行增加的现状。得到了无效评价单元投入资源的利用率和改进侧重点以及有效评价单元继续优化的方向。(5)根据对影子价格的分析可知,甘肃省主要受特殊地形限制,应有针对性的,差异化安排机械,多种作业方式配合使用。化肥施用折纯量的影子价格也比较小,在农业生产的实际操作过程中,容易忽视化肥的过量使用的问题。农作物播种面积的影子价格较大,说明其直接影响着农用地的产出效率。从产出角度分析,农民人均纯收入的影子价格远高于粮食产量的影子价格,说明农民人均纯收入增加的效益幅度大于粮食产量增加的效益幅度。
[Abstract]:In order to overcome the limitation that the traditional data envelopment analysis method can not refine the effective unit, this paper introduces the super-efficiency data envelopment analysis model in the study of agricultural land use efficiency. Projection analysis and shadow price are used to analyze the difference of effective evaluation units, the causes of invalid evaluation units and the effect of input-output changes on efficiency. At the same time, the time variation and regional differences of agricultural land use efficiency in Gansu Province were analyzed. The results showed that the first part of the study was from 2006 to 2012. The combination efficiency of input elements of agricultural resources in Gansu Province is relatively high, the average value is 0.927. From the perspective of space. Most of the agricultural land use efficiency of high efficiency. 2006-2012 Gansu agricultural land use efficiency areas have a certain concentration, high-efficiency areas are distributed in the Hexi Corridor area. After the Longdong region. Gannan, Linxia animal husbandry development is relatively more. Promote the effectiveness of DEA. Longzhong region and Jiuquan region of natural conditions of agriculture natural deficiency. Longnan region has more mountains but sufficient and reasonable water and heat conditions to arrange input. According to the comparative analysis of pure technical efficiency and scale efficiency under super efficiency, it can be concluded that the improvement of internal efficiency of each city is mainly caused by technical improvement or investment increase. For the evaluation unit where the rank of pure technical efficiency is greater than the rank of scale efficiency, the improvement of agricultural land use level mainly depends on the transformation of agricultural production technology. For the evaluation unit whose pure technical efficiency rank is larger than the scale efficiency ranking, the improvement of its efficiency level is more dependent on the increase of input. The intensive utilization of agricultural land in Gansu Province is mostly in the state of constant or decreasing scale, which shows that Gansu Province can not be blind in expanding the scale of agricultural production. We still need to pay attention to the problem of whether the utilization mode is extensive. (4) using the projection analysis under the super efficiency, the method that can only be improved on the non-effective evaluation unit is solved. The current situation of increasing all inputs in equal proportion according to the value of super-efficiency evaluation. The direction of resource utilization and improvement focus of the invalid evaluation unit and the continuous optimization of the effective evaluation unit are obtained. According to the shadow price analysis. Gansu Province is mainly restricted by special terrain, should be targeted, differentiated arrangement of machinery, a variety of operational methods to cooperate in use. Chemical fertilizer applied scalar shadow price is also relatively small, in the actual operation of agricultural production process. It is easy to ignore the problem of excessive use of chemical fertilizer. The shadow price of crop sown area is large, which shows that it directly affects the productivity of agricultural land. The shadow price of peasants' per capita net income is much higher than the shadow price of grain yield, which indicates that the increase of peasants' per capita net income is more than the benefit range of grain production increase.
【学位授予单位】：甘肃农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F224;F321.1

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