广东省农业循环经济发展的DEA分析与有效性评价
收稿日期: 2009-10-23
修回日期: 2010-03-23
网络出版日期: 2010-06-30
基金资助
国家支撑计划项目"珠江三角洲集约化农田循环高效生产技术集成研究与示范 (2007BAD89B14)";广东省科技计划项目珠江三角洲农田资源循环模式与规模化配置技术研究(2008A020100011)。
Data Envelopment Analysis and Efficiency Evaluation on Development of Agricultural Circular Economy in Guangdong
Received date: 2009-10-23
Revised date: 2010-03-23
Online published: 2010-06-30
运用数据包络分析方法中的超效率DEA(Super-efficiency Data Envelopment Analysis, SE-DEA)模型对2004、2005年广东21个地市农业循环经济发展的有效性进行了评价,并应用DEA模型(C2R和BC2)对于非DEA有效城市的主要原因进行了分析,提出了非有效向有效转化和调整的方向与建议。结果表明,两年间全省农业循环经济发展的平均超效率值均在2.0以上,平均综合效率、技术效率和规模效率值分别为0.967 0、0.974 8和0.991 0。2005年中有11个地市的效率值都呈现上升趋势,农业循环经济发展整体状况良好。5个非DEA有效的地市中,技术有效而规模无效率的地市只有汕尾,该地区的规模报酬处于递增状态。惠州、清远、梅州和江门地区均表现为技术、规模无效。其中梅州的技术效率最低,规模报酬显示出下降趋势。非DEA有效地市可对相对无效的投入、产出作适当调整,即缩减过多的投入或增加不足的产出,以改善和提高农业循环经济的运行效率。
秦 钟,王建武,章家恩,骆世明,徐华勤,赵本良 . 广东省农业循环经济发展的DEA分析与有效性评价[J]. 自然资源学报, 2010 , 25(6) : 904 -913 . DOI: 10.11849/zrzyxb.2010.06.003
Efficiency of agricultural circular economy in 21 city-regions in Guangdong Province during the year 2004 and 2005 was evaluated using super-efficiency data envelopment analysis(SE-DEA) method. The results indicated average super efficiency values of DEA for 21 city-regions have exceeded 2.0 in two years. Eleven city-regions’efficiency values increased in 2005, which meant that agricultural circular economic development in Guangdong as a whole was good. During the year from 2004 to 2005, average comprehensive efficiency, technical efficiency and size efficiency for 21 city-regions were 0.9670, 0.9748 and 0.9910 respectively. For five non-DEA efficiency city-regions, Shanwei was in the state of technical efficiency but non-size efficiency, with increasing returns to scale. The other five cities such as Huizhou, Qingyuan, Meizhou and Jiangmen were characterized by neither technical efficiency nor size efficiency, and Meizhou yielded the lowest technical efficiency and decreasing returns to scale. Agricultural circular economy efficiency in these non-DEA efficiency city-regions could be improved by appropriate readjustment of ineffective inputs and outputs, that is, to retrench excessive inputs or increase insufficient outputs.
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