SPATIAL DIFFERENCES AND DYNAMIC EVOLUTION OF DISTRIBUTION OF AGRICULTURAL FILM UTILIZATION EFFICIENCY IN CHINA
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.
utilization efficiency of agricultural filmSBM modelKernel density estimationspatial differencedynamic evolution
NETL
NSTL
万方数据
