中国省域间农业科技知识流动及其空间相互作用分析

Knowledge Flow and Spatial Interaction of Agricultural Science and Technologyamong Provinces in China

基于中国省域层面10大农业科技专利分类数据,通过测算区域农业科技专业化指数、区域农业科技发展优势,分析中国省域农业科技发展走向,同时,构建区域农业科技知识流动距离指数,表征省域间农业科技知识流动趋势,明晰各省域农业科技知识流动距离差距;最后,借鉴引力模型,测度由区域农业科技知识流动产生的空间相互作用。研究发现:2000-2018年我国大部分省域农业科技呈现出多元化发展趋势,各省域优势农业科技数量开始回落;大部分省域间农业科技知识流动距离偏小,各省域农业科技结构呈现出同构化;部分省域农业科技结构差异较大。据此,提出相应建议与举措。

Based on the data of 10 agricultural science and technology patent categories at the provincial level in China.By calculating the specialization index of regional agricultural science and technology and the situation of regional dominant agricultural science and technology to analyzing the development trend of agricultural science and technology at provincial level in China.Constructing the distance index of agricultural science and technology knowledge flow between regions to represent the situation of agricultural science and technology knowledge flow between provinces,and to clarify the difference of agricultural science and technology knowledge flow distance between provinces.Finally,The gravity model is used to measure the spatial interaction between regions caused by the flow of agricultural science and technology knowledge.The results show that:From 2000 to 2018,the agricultural science and technology in most provinces in China gradually showed diversified development,and the quantity of superior agricultural science and technology in each province also began to decline.The flow distance of agricultural science and technology knowledge among most provinces is generally small,and the structure of agricultural science and technology among provinces presents a certain homogenization,which is conducive to the agricultural science and technology exchanges and cooperation among provinces.The structure of agricultural science and technology in some provinces is quite different.