“十五”以来陕西省环境质量变化趋势分析

Environmental Quality Changing Trend since the Tenth Five-Year Plan Period in Shaanxi Province

为了客观反映环境质量变化趋势以及为环境管理决策提供科学依据,以陕西省环境质量监测数据为基础,采用Spearman秩相关系数法,对陕西省2001—2007年空气、酸雨、地表水及噪声等方面的环境质量变化情况进行了分析。结果表明,"十五"以来,陕西省环境质量总体呈好转趋势,城市空气质量持续改善,城市尘污染防治成效显著;酸雨发生率普遍较低,仅有局部地区出现酸雨,分布相对稳定;水环境质量总体恶化的趋势得到遏制,地表水污染呈减轻趋势;城市噪声污染控制效果明显,城市区域噪声和交通噪声质量明显改善。

In order to reflect the changing trend of environmental quality objectively and provide a scientific basis for environmental management decision-making, the air, acidic rain, surface water, and noise are ana- lyzed by using Spearman rank correlation coefficient method based on monitoring data of environmental quali- ty since the Tenth Five-Year Plan Period in Shaanxi Province. Results show that the environmental quality has being improved since the Tenth Five-Year Plan Period in Shaanxi Province. Urban air quality has being improved and urban dust pollution prevention has achieved remarkable successes. There is generally low inci- dence of acid rain in the region. Acid rain is observed only in some areas and its distribution is in relative sta- bility. Water quality deterioration in the overall trend has been prevented~ the trend of surface water pollu- tion has been alleviated; city noise pollution has been effectively controlled; and the quality of traffic noise and urban noise has been significantly improved.