摘要
在流域粮食增产与水环境约束双重背景下，采用DEA模型、Malmquist生产率指数和GIS空间分析方法，对2000～2011年淮河流域35个地市的农业生产效率及时空变化特征进行分析。结果发现：①2000～2011年淮河流域农业生产效率普遍较高，技术效率在流域综合效率提升方面发挥着积极作用，但决定综合效率最优的规模效率却有微弱下降；②农业生产效率空间分析发现，流域生产效率呈现东部高于中部，中部高于西部的空间梯度分布格局；③农业生产效率变化时空特征研究表明，2000～2011年流域综合效率变化和规模效率变化呈现微弱的下降趋势，其中流域西部下降最为显著，而技术效率与生产率却呈现提高趋势，其中东部提升最为显著；④依据综合效率计算结果和时间变化特征，将农业生产效率变化划分为5种基本类型，发现综合效率持续不变的a类型地市最多，是流域农业生产效率变化的主要类型。
Under the background of grain production increase in basin and the restriction of water environment. DEA model, Malmquist productivity index and GIS spatial analysis methods were used to analyze the agricul- ture production efficiency and its temporal and spatial variation characteristic in 35 prefectures of Huaihe Riv- er basin from 2000 to 2011. The results demonstrated： 1） The agricultural production efficiency was generally higher in the Huaihe River Basin in 2000 to 2011. Although the technical efficiency played a positive role in in- creasing the basin comprehensive efficiency, there was a slight decrease in the scale efficiency which decides the optimal comprehensive efficiency; 2） Spatial analysis of agricultural production efficiency showed the spa- tial gradient of the distribution of production efficiency in this basin. Production efficiency in the east was high- er than that in the middle part while the efficiency in the middle part was higher than that in the west; 3） The spatial-temporal variation pattems of agricultural production efficiency showed that from 2000 to 2011, both the comprehensive and scale efficiency had a slight decreasing trend in this basin, especially in the west of ba- sin, while the technical efficiency and productivity had an increasing trend, especially in the east; 4） According to the calculation result of the comprehensive efficiency and temporal variation characteristic, the variation of agricultural production efficiency was divided into five basic types. Most prefectures were ＂A＂ type whose comprehensive efficiency remained steady, and the ＂A＂ type was also the main type of agricultural production efficiency variation in this basin
出处
《地理科学》
CSCD
北大核心
2013年第12期1476-1483,共8页
Scientia Geographica Sinica
基金
南京大学研究生科研创新基金项目(2013CL07)
江苏研究生创新计划(CXLX13_033)
国家水体污染控制与治理科技重大专项(2009ZX07210-010-001)资助
关键词
农业
生产效率
DEA模型
时空变化
淮河流域
agriculture
production efficiency
DEA Model
spatial-temporal variation
the Huaihe River Basin
