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1995-2012年中国突发性环境污染事件时空演化特征及影响因素

DOI: 10.18306/dlkxjz.2015.06.010, PP. 749-760

Keywords: 突发性环境污染事件,探索性空间分析方法,时空演化特征,空间效应,中国

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Abstract:

利用ESDA空间统计分析方法和Matlab空间面板计量模型,对1995-2012年中国各地区发生的环境污染事件的时空演化特征和影响因素进行分析。结果表明环境污染事件呈先动态增长后逐渐下降的趋势,水污染和大气污染事件是主要事故类型;环境污染事件发生的高频风险区域亦在逐渐减少,东南沿海及四川、湖南等中西部区仍有局部集聚的态势;1995-2000年中国的环境污染事件总体呈随机分布状态,2001年后则开始呈现集聚的特征;Moran散点图表明,局部的空间集聚先增强后减弱,环境污染事件近年来集中在泛长三角地区,高高地区为江浙沪;环境污染事件的重心转移方向主要为西南和东北,两个快速转移时期分别为1998-2001和2004-2007年,这与区域的产业转移和高负荷的污染排放压力有关;环境污染事件的发生与污染物的达标排放和控制、经济发展阶段及环境治理投入、环境监管能力、空间效应等因素有关。空间效应主要体现在空间邻近效应和空间溢出效应。未来应注重环境污染事故的区域联防联控,制定若干跨界污染事故的应急响应联动机制及环境污染区域联防联控机制。

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