“十五”以来陕西省环境质量变化趋势分析

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.

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

In order to reflect the changing trend of environmental quality objectively and provide a scientific basis for enviro nmental management decision-making,the air,acidic rain, surface water, and noise are analyzed by using Spearman rank correlation coefficient method based on monitoring data of enviro nmental qual-ity 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. Ur ban air quality has being improved and urban dust pollution prevention has achieved remarkable successes. There is generally low inc-idence of acid rain in the region. Acid rain is observed only in some areas and its distribution is in relative stability. Water quality deterioration in the overall trend has been prevented; the trend of surface w ater pollution has been alleviated; city noise pollution has been effectively controlled; and the quality of traffic noise and urban noise has been sig nificantly improved.