五大连池风景区森林环境气体污染物浓度时间变化规律研究

利用五大连池风景区森林环境空气质量监测站数据,分析了SO 2、NO 2、CO、O 3等4种气体污染物的日变化和季节变化特征,明确了景区内气体污染物的时间变化规律及森林环境空气质量的真实水平。结果表明:(1)林内O 3、CO日变化规律总体呈早晚低、正午高的变化趋势;NO 2浓度总体水平较低且变化平缓,11月日动态波动较大;SO 2总体呈先增高后降低的变化趋势。(2)林内SO 2、NO 2、O 3的季节变化总体呈春季>秋季>夏季,而CO季节变化规律则表现为夏季>春季>秋季。(3)参照国家标准,景区5月、8月和11月所监测的气体污染物整体浓度水平偏低,均达到国家一级标准,景区森林环境空气质量优良。

Time Variation Law of Gas Pollutant Concentration in Wudalianchi Scenic Area

Based on the monitoring data of forest environmental air quality monitoring station in WudalianchiScenic Spot,the daily and seasonal variation characteristics of four kinds of air pollutants(SO 2,NO 2,CO,O 3)were analyzed,and the temporal variation rule of air pollutants in the scenic spot and the real level of forest environmental air quality were clarified.Result shows that:(1)The daily variation of O 3 and CO in the forest shows a trend of low in the morning and evening and high in the noon;the overall level of NO 2 concentration is low and the variation is gentle,and the daily dynamic fluctuation is large in November;the overall trend of SO 2 increase first and then decrease.(2)The seasonal variation of SO 2,NO 2&O 3 in the forest is high in spring,low in summer,and middle in autumn,with spring>autumn>summer in general,while the seasonal variation of CO is summer>spring>autumn.(3)According to the national ambient air quality standard(GB3095-2012),the overall concentration level of air pollutants monitor in May,August and November in the scenic spot is low,all of which meet the national first-class standards,indicating that the forest ambient air quality in the scenic spot is excellent.