环渤海地区水污染物排放的时空格局及其驱动因素

发布时间：2018-06-07 05:01

本文选题：水污染物排放 + 时空格局　；参考：《地理科学进展》2017年02期

【摘要】：本文基于地级行政单元的水污染物排放和社会经济截面数据,分析环渤海地区水污染物排放的流域特征与时空分异,定量解析环渤海地区及高强度排放聚集区内水污染物排放的驱动因素。研究结果表明:(1)海河流域是环渤海地区纳污量最大、增量最突出的流域,其化学需氧量和氨氮排放分别占区域排放总量的38.94%、39.23%。(2)2005年以来,环渤海地区水污染物高排放区从零星分布向连片分布转变,京津冀、山东半岛、辽中南已成为水污染物高排放区的叠加区域。(3)环渤海地区水污染物排放具有显著空间溢出效应,且空间关联程度呈增大趋势,水污染排放热度呈沿海向内陆递减态势,海河流域热度显著高于其他流域,沿海合作区显著高于内陆协作区;京津冀长期处于热点区和次热区,热区覆盖范围由海河向淮河流域拓展。(4)不同水污染物排放的驱动因素差异显著,对化学需氧量排放而言,经济增长速度、固定资产投资因素呈较强的正向带动,而城镇化水平和工业化程度表现出显著负向影响;对氨氮排放来说,人口规模呈正向带动,固定资产投资和外商直接投资亦有一定正向影响,经济发展水平则呈现显著的抑制作用。
[Abstract]:Based on the data of water pollutant discharge and socioeconomic cross-section of prefectural administrative units, this paper analyzes the watershed characteristics and temporal and spatial differentiation of water pollutant discharge in Bohai Rim. The driving factors of water pollutant emission in Bohai region and high intensity discharge area are analyzed quantitatively. The results show that the Haihe River Basin is the basin with the largest and the most prominent increment in the area around the Bohai Sea. Its chemical oxygen demand (COD) and ammonia nitrogen emissions account for 38.94% of the total regional emissions respectively since 2005. The high discharge area of water pollutants around the Bohai Sea has changed from sporadic distribution to continuous distribution. Beijing-Tianjin-Hebei, Shandong Peninsula and central and southern Liaoning have become superimposed areas of high discharge area of water pollutants. 3) the discharge of water pollutants around Bohai Sea has significant spatial spillover effect. The degree of spatial correlation showed an increasing trend, the heat intensity of water pollution decreased from coastal to inland, the heat intensity of Haihe River basin was significantly higher than that of other basins, the coastal cooperative area was significantly higher than that of inland cooperative area, and Beijing, Tianjin and Hebei were in hot spots and secondary heat regions for a long time. The driving factors of the discharge of different water pollutants from Haihe River to Huaihe River Basin are significantly different. For the discharge of chemical oxygen demand, the economic growth rate and the fixed assets investment factor are strongly positive driven. The urbanization level and industrialization level showed a significant negative impact. For ammonia nitrogen emissions, the population size was positively driven, fixed asset investment and foreign direct investment also had a positive impact. The level of economic development showed a significant inhibitory effect.
【作者单位】：中国科学院区域可持续发展分析与模拟重点实验室;中国科学院地理科学与资源研究所;
【基金】：国家自然科学基金项目(41501139,41530634) 中国科学院科技服务网络计划项目(KFJ-STS-ZDTP-021)~~
【分类号】：X52

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