江西省工业源水劣化足迹核算与评估——基于2006—2017年江西省生态环境厅《环境统计年报》数据

The Accounting and Evaluation of Industrial Source Water Degradation Footprint in Jiangxi Province——Based on Data of Environmental Statistics Annual Report from 2006′s to 2017′s

基于水劣化足迹的评价方法,对江西省不同工业行业在多个时间和空间维度上排放的污染物进行水富营养化足迹、水酸化足迹和水生态毒性足迹的核算和评价.研究结果表明:(i)2017年,对江西省水富营养化足迹影响最大的关键行业是有色金属冶炼和压延加工业,其次是造纸和纸制品业,再次是化学原料和化学制品制造业,关键污染物是氨氮(NH_(3)-N);对水酸化足迹影响较大的关键行业是非金属矿物制品业与黑色金属冶炼和压延加工业,关键污染物是SO_(2);对水生态毒性足迹影响最为显著的是有色金属矿采选业,关键污染物是Cd.(ii)空间维度评估表明对水富营养化足迹贡献最大的是赣州市,对水酸化和水生态毒性足迹影响最突出的均为宜春市.(iii)2006—2017年江西省3种水劣化足迹均总体呈下降趋势,水富营养化足迹与峰值相比降低了70.06%,水酸化足迹与峰值相比降低了59.99%,水生态毒性足迹与峰值相比降低了24.33%.

Based on the evaluation method of water degradation footprint,accounting and evaluation of water eutrophication footprint,water acidification footprint and water ecotoxicity footprint are analyzed on the characteristic pollutants discharged from different industrial industries in Jiangxi Province and in multiple time and space.The results show that the key industries that have a greater impact on the water eutrophication footprint of Jiangxi Province in 2017 are non-ferrous metal smelting and rolling processing industry,paper and paper product industry,chemical raw material and chemical product manufacturing industry,and the key pollutant is ammonia nitrogen(NH_(3)-N).The key industries that have a greater impact on the water acidification footprint are the non-metallic mineral products industry and the ferrous metal smelting and rolling processing industry,and the key pollutant is SO_(2).the most significant impact on the water ecological toxicity footprint is the non-ferrous metal mining and processing industry,and the key pollutant is Cd.In addition,the spatial dimension evaluation shows that Ganzhou City has the largest contribution to the water eutrophication footprint,and Yichun City has the most prominent impact on water acidification and water ecotoxicity footprint.Finally,the three types of water degradation footprints in Jiangxi Province show an overall downward trend from 2006 to 2017.The water eutrophication footprint is reduced by 70.06%compared with the peak value,the water acidification footprint is reduced by 59.99%compared with the peak value,and the water ecotoxicity footprint is reduced by 24.33%compared with the peak value.