Abstract:From April 2010 to April 2011, weekly to biweekly samples of total suspended particle (TSP) were collected at two sites in Jiuzhaigou National Nature Reserve (Jiuzhaigou hereafter). The site at the entrance was much more affected by local tourism (e.g., tour bus), compared with the site at the Long Lake meteorological station. Ionic concentrations of the samples were measured. The results show that TSP, SO42-, Ca2+, K+, NH4+ and NO3- concentrations in air were significantly higher at the entrance than at the Long Lake meteorological station, while Na+, Mg2+ and Cl- concentrations were similar between the two sites, respectively. Pronounced seasonal variations in ionic concentrations were observed. Concentrations of TSP and most ions were lower during the peak season of tourism (from June to October), probably due to the higher cleaning effect of precipitation on air. In contrast, concentrations of TSP and most ions were higher during the other months, likely owing to low precipitation amount and the spring dust from northwestern China. Furthermore, the equivalent ratios of [SO42-]:[NO3-] were relatively high. All above suggest that atmospheric environment in Jiuzhaigou was considerably polluted by local tourist activities, regional combustion of coal and biomass, and spring dust transported from northwestern China.
乔雪, 肖维阳, 唐亚, Daniel JAFFE, 江丽君. 旅游和区域大气污染对四川九寨沟气溶胶的贡献[J]. 中国环境科学, 2014, 34(1): 14-21.
QIAO Xue, XIAO Wei-Yang, TANG Ya, Daniel JAFFE, JIANG Li-Jun. Contributions of local tourism and regional air pollution to atmospheric aerosols in Jiuzhaigou, Sichuan, China. . CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(1): 14-21.