| 摘要: |
| 目的 在农业种植中使用农膜能够改善和优化栽培条件，但农膜的过量使用导致从“白色革命”变成了“白色污染”，对自然环境的影响较大，国家高度重视农业的绿色发展，因而提升农膜的利用效率迫在眉睫，不同地区农膜利用效率的差异给农业区域的协调发展带来很大的挑战，期望以此提升农膜利用效率来促进农业高质量发展。方法 文章采用全局参比的非期望产出SBM模型测算2010—2019年中国各地的农膜利用效率，并借助“ArcGIS软件”绘制农膜利用效率的空间分布格局图来考察其空间分布，利用Theil指数和Kernel核密度估计方法考察其动态演进。结果 （1）中国不同地区农膜利用效率存在一定程度上的差异，大体呈现出东部和西部农膜利用效率高，中部农膜利用效率低的空间分布特征。（2）在变化趋势上，东部和西部呈现出先增后降的趋势，中部地区的变化幅度比较稳定。（3）中国总体农膜利用效率的Kernel密度函数中心呈现出右移的态势，且发展过程出现 “宽峰—尖峰—宽峰”的演进规律，该结果表明，农膜的总体利用效率在提高，且空间差异表现出先缩小后扩大的演进趋势。结论 各地在提高发展的同时，应该结合自身实际情况，因地制宜地制定提高农膜利用效率的政策，以促进农业区域的协调发展。 |
| 关键词: 农膜利用效率 SBM模型 Kernel核密度估计 空间差异 动态演进 |
| DOI：10.7621/cjarrp.1005-9121.20240407 |
| 分类号:F205 |
| 基金项目:国家自然科学基金项目“基于碳汇功能的粮食作物生态补偿机制研究——以小麦、玉米为例”（71503148）；国家自然科学基金项目“煤矸石—稻壳复合材料对稻田土壤砷的钝化机制研究”（42177027） |
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| SPATIAL DIFFERENCES AND DYNAMIC EVOLUTION OF DISTRIBUTION OF AGRICULTURAL FILM UTILIZATION EFFICIENCY IN CHINA |
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Guo Yanan, Li Fang, Li Ying
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School of Economics and Management, Shandong Agricultural University, Tai'an 271018, Shandong, China
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| Abstract: |
| The use of agricultural film in agricultural planting can improve and optimize the cultivation conditions. But the excessive use of agricultural film has changed "white revolution" into "white pollution", which has a great impact on the natural environment. The government attaches great importance to the green development of agriculture. So it is urgent to improve the utilization efficiency of agricultural film. The difference in agricultural film utilization efficiency in different regions brings great challenges to the coordinated development of agricultural regions. Therefore, it is expected to promote the high-quality development of agriculture by improving the efficiency of agricultural film utilization. The global reference undesired output SBM model was used to calculate the agricultural film utilization efficiency of various provinces (regions) in China from 2010 to 2019, and the spatial distribution pattern of agricultural film utilization rate was drawn with the help of "ArcGIS" to investigate its spatial distribution. Its dynamic evolution was investigated by Theil index and Kernel density estimation. The results show that: (1) There are certain differences in the utilization rate of agricultural film in different regions of China, which generally show the spatial distribution characteristics of high agricultural film utilization in the east and west and low agricultural film utilization in the central region. (2) In terms of the change trend, the eastern and western regions show a first increasing and then decreasing trend, and the change amplitude in the central region was relatively stable. (3) The Kernel density function center of China's overall agricultural film utilization efficiency showes a trend of rightward shift, and the evolution law of "wide peak-spike-wide peak" appears in the development process, which showes that the overall utilization efficiency of agricultural film is increasing, and the spatial difference showes a first shrinking and then expanding evolution trend. While improving development, each province should formulate policies to improve the utilization rate of agricultural film according to its own actual conditions and local conditions, so as to promote the coordinated development of agricultural regions. |
| Key words: utilization efficiency of agricultural film SBM model Kernel density estimation spatial difference dynamic evolution |
