Abstract
癌症村反映了在一定时间和空间上癌症聚集发生、引起社会群体格外关心的公共卫生问题,具体表现为从某一年开始并持续多年的远高于正常水平的癌症发生率和死亡率。研究基于地理空间统计分析的局部自相关、点距离关联维及核密度等方法,从不同空间尺度分析了癌症村的分布状况。结果表明:癌症村聚集分布但区域差异显著,总体上自东向西梯度递减,局部自相关分析表明川陕晋冀津构成西部与东部之间低—高集聚分布的分界线;距离关联无标度区间为120~180 km,核密度分析显示癌症村集中于河流下游地区,及中部、沿海部分地区,多中心、集中分布格局明显。研究突出了癌症村地理多尺度分布特征的探索,可为相关环境污染整治工作提供参照。
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