京津冀地区市域及县域蔬菜生产特征分析
2021-06-30张倩胡雁翔于峰王明李刚
张倩 胡雁翔 于峰 王明 李刚



摘 要: 利用区位熵指数和K均值聚类算法(K-means)分析了京津冀地区13个市域单元和184个县域单元的蔬菜生产空间分布、集聚程度及分类。结果表明:京津冀地区市域蔬菜生产大致分为紧缩型、发展型和平衡型三类;县域蔬菜生产呈现一定的专业聚集度,区位熵两极分化趋势明显,可根据县域蔬菜生产特征将京津冀地区划分为4个蔬菜生产区。
关键词: 蔬菜生产; 空间分布; 京津冀地区; 区位熵
中图分类号: S641.2 文献标志码: A 文章编号: 1673-2871(2021)02-082-06
Analysis of vegetable production characteristics in Beijing-Tianjin-Hebei region
ZHANG Qian1, HU YanXiang1, YU Feng1, WANG Ming1, LI Gang2
(1. Institute of Agricultural Information and Economics, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; 2. Beijing Agricom Network Technology Co., Ltd, Beijing 100070, China)
Abstract: The spatial distribution, concentration degree and classification of vegetable production were investigated in 13 cities and 184 counties of Beijing-Tianjin-Hebei region, the location entropy index and K-means clustering algorithm were used in this survey. The results showed that the production patterns of vegetables in the Beijing-Tianjin-Hebei region at city level could be roughly divided into three types: compact type, development type and balanced type, while it showed a certain degree of professional aggregation at county level, and the polarization trend of location entropy was obvious. According to the characteristics of vegetable production at county level, the whole area could be divided into four vegetable production areas.
Key words: Vegetable production; Space distribution; Beijing-Tianjin-Hebei region; Location entropy
保障蔬菜供给是重大的民生问题,蔬菜的生产与布局一直受到国家的重视。从全国来看,蔬菜产业布局逐渐朝着区域化、规模化的方向发展,形成了明显的农业产业带和块状产地布局。蔬菜生产空间分布研究能够为蔬菜产业的专业化发展提供参考。随着城市的发展,蔬菜生产由城市近郊向远郊及农村转移,外埠蔬菜已成为城市居民多元化蔬菜消费的主体,蔬菜主产区和主销区日趋分离[1]。京津冀作为中国三大区域经济体之一,是中国主要蔬菜产区。随着京津冀协同发展以及环京津1小时物流圈的构建,河北省的蔬菜生产对北京、天津的蔬菜市场和蔬菜质量安全起着越来越重要的作用。
近年来,国内外学者对于蔬菜生产格局变化的相关研究较少,对市县尺度的研究更为薄弱。研究县域尺度的蔬菜生产时空特征,对科学评估、优化蔬菜产业格局,以及节本增收、保障供给都具有重要意义。……
