基于LCA和DEA法相结合的干旱区绿洲农业生态经济效率研究——以张掖市制种玉米为例

发布时间：2018-05-13 07:18

本文选题：干旱区农业 + 生态经济效率　；参考：《生态经济》2017年11期

【摘要】：绿洲农业是我国西北干旱区农业的精华,面临关键生产要素稀缺和生态环境脆弱的双重限制,低投入高产出的高生产效率无疑是破解双重限制的重要途径,因此十分有必要评估其生态经济效率,辨析其影响因素。在张掖市统计局投入产出调查基础上增补专项调查,以制种玉米种植农户为研究对象,先利用生命周期评价方法,对制种玉米生产边界内的相关环境影响量化分析,并将干旱区主要的农业生产约束性要素——水资源纳入其中,得出张掖市制种玉米环境影响归一化结果加权评估后的均值为1.28E-07;再将该值作为非期望产出纳入第二步的SBM超效率模型效率评价体系中,测算得出生态经济效率均值为0.871 2;最后,分别采用OLS和Tobit两种方法对效率影响因素进行分析,并针对生态效率影响因素提出相关建议。
[Abstract]:Oasis agriculture is the essence of agriculture in the arid region of northwest China. It faces the double restriction of the scarcity of key production factors and the fragility of ecological environment. The high production efficiency with low input and high output is undoubtedly an important way to solve the double restriction. Therefore, it is necessary to evaluate its ecological and economic efficiency and analyze its influencing factors. On the basis of the input-output survey of Zhangye City Bureau of Statistics, the special investigation was added, and the farmers of seed corn planting were taken as the research objects. Firstly, the quantitative analysis of the related environmental impact within the production boundary of seed maize was carried out by using the life cycle evaluation method. Water resources, the main binding factor for agricultural production in arid areas, It is concluded that the average value of the weighted evaluation of environmental impact of maize seed production in Zhangye City is 1.28E-07. then the value is included as non-expected output in the efficiency evaluation system of the second step SBM super-efficiency model, and the average value of eco-economic efficiency is estimated to be 0.871; finally, Two methods, OLS and Tobit, were used to analyze the influencing factors of efficiency, and some suggestions were put forward for the influencing factors of ecological efficiency.
【作者单位】：兰州大学经济学院;中国科学院西北生态环境资源研究院内陆河流域生态水文重点实验室;
【基金】：国家自然科学基金面上项目“需水管理导向的农村居民用水行为研究——以黑河流域为例”(41571516) 中国博士后科学基金项目“基于LCA和DEA方法结合的西北绿洲农业生态经济效率研究”(2016M590980)
【分类号】：F224;F327

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