李阳,常锋,巨天珍,周晓波.川渝地区甲醛柱浓度时空变化及其影响因子的相关性分析[J].环境科学学报,2019,39(8):2670-2679
川渝地区甲醛柱浓度时空变化及其影响因子的相关性分析
- Correlation analysis of temporal and spatial variation of formaldehyde column concentration and its influencing factors in Sichuan and Chongqing areas
- 基金项目：国家重点研发计划项目（No.2016YFC0500907）；甘肃省重点研发计划项目（No.17YF1FA120）；兰州市人才创新创业科技计划（No.2017RC69）
- 李阳
- 西北师范大学地理与环境科学学院, 兰州 730070
- 巨天珍
- 西北师范大学地理与环境科学学院, 兰州 730070
- 周晓波
- 甘肃省庆阳市环境保护局, 庆阳 745000
- 摘要：基于Aura-OMI HCHO数据，研究川渝地区2009—2017年甲醛柱浓度变化及影响因素.结果表明：9年间川渝地区甲醛浓度变化总体较为平稳，与全国其他地区相比，浓度均值较低.年变化中，四川省甲醛浓度整体高于重庆市，川渝两地的年均最高值分别出现在2011年和2012年，且2015年重庆出现最大下降速率.整个研究区在最高值变化中，1月、2月及11月出现极高值.9年间甲醛浓度整体先上升后下降，浓度等级二级 > 一级 > 三级 > 其他级别，绝对高值集中分布在康定和雅安交界一带，季节变化呈现春季 > 秋季 > 夏季 > 冬季的规律，与全国其他地区夏季最高有所不同.稳定性方面，研究区中部偏西波动较大，东西两部较为稳定，康定和雅安交界处为高波动区，川西西部、川东平行岭谷和重庆为低波动区，其他地区为中等波动区.地形、气候和风向等自然因素的综合作用对甲醛浓度值的大小及空间分布贡献极大，自然地理条件尤其与极端高值高且集中的特点关系密切.社会经济因素中，生产总值增长速度和能源消费总量增长率与四川省和重庆市两地的甲醛浓度变化正相关关系较强，木材加工及草制品业与之负相关关系较强，而纺织业、化学原料和化学品制造业、石油和核燃料加工业只与四川省甲醛浓度有较强的负相关性，重庆相对较弱.
- Abstract：Based on Aura-OMI HCHO data, this thesis studied the changes of formaldehyde column concentration and its influencing factors in Sichuan and Chongqing from 2009 to 2017. The results showed that the changes of formaldehyde concentration in Sichuan and Chongqing areas are generally stable in 9 years,and the average concentration is lower than that in other regions of the country. In the annual change, the formaldehyde concentration in Sichuan Province was higher than that in Chongqing city as a whole, with the highest average annual values in 2011 and 2012 respectively, and the highest decline rate in 2015 in Chongqing. Among the highest values in the whole study area, there were extremely high values in January, February and November. In the past 9 years,the overall formaldehyde concentration increased first and then decreased,and the concentration level was level 2 > level 1 > level 3 > other levels. The absolute high values were concentrated in the border area between Kangding and Ya'an, and the seasonal variation showed the rule of the spring > autumn > summer > winter, which was different from the highest in summer in other parts of the country. In terms of stability, the west-central part of the study area fluctuated greatly, while the east-west part were relatively stable. The junction of Kangding and Ya'an was a high fluctuation zone, the west of sichuan, the east of Sichuan and parallel ridge valley and chongqing were low fluctuation zones, and the other areas were medium fluctuation zones. The combined effects of natural factors such as topography, climate and wind direction were contributed greatly to the size and spatial distribution of formaldehyde concentration. The natural geographical conditions were especially closely related to the characteristics of extremely high and concentrated values.Among the social-economic factors, the growth rate of GDP and total energy consumption had a strong positive correlation with formaldehyde concentration changes in Sichuan Province and Chongqing Municipality. The wood processing and straw products industries had a strong negative correlation with them.The textile industry, chemical raw materials and chemical manufacturing industry, oil and nuclear fuel processing industry had only a strong negative correlation with the formaldehyde concentration in Sichuan Province,while Chongqing is relatively weak.
