【摘要】 为验证环境磁学方法监测和预测旅游景区道路灰尘环境的可行性,以新疆天山天池5A级旅游景区内道路灰尘为研究对象,共采集道路灰尘样品40个、道路旁表土样品35个,并对其进行环境磁学分析。结果表明,天山天池道路灰尘磁性主要由亚铁磁性的磁铁矿主导,含有少量不完全反铁磁性矿物,主要以多畴(MD)粗颗粒和稳定单畴(SSD)为主,伴有极少量的超顺磁性颗粒颗粒(SP);景区道路灰尘样品磁性增强与人为交通活动产生的磁性颗粒外源输入密切相关;从道路样品磁性参数的空间分布看,χLF、χARM、SIRM、SOFT的空间变化趋势类似,高值区位于民族文化村和纪念品商店,中值区出现在天山奇石馆,低值区分布在定海神针和秀水山庄。景区不同道路旅游交通的流量和强度是形成磁性特征空间分布格局的主因。研究发现,环境磁学方法基本具有大范围监测景区道路环境质量、圈定潜在污染范围和判别污染物来源的潜力,并能为景区道路交通污染防治提供了参考依据。更多还原

【Abstract】 In order to verify the feasibility of environmental magnetic methods to monitor and predict the road dust environment of scenic spot, the environmental magnetic properties, spatial variation and environmental implications of road dust samples in Tianchi Scenic Spot of Xinjiang were analyzed by collecting 40 road dust samples and 35 roadside topsoil samples. The results showed that the content of magnetic minerals of road dust samples had higher values;the magnetic properties of road dust samples were predominated by ferromagnetic minerals(magnetite). The samples also contained some amount of anti-ferromagnetic minerals. The magnetic grains were mainly multidomain(MD) and stable single domain(SSD) coarser particles and less superparamagnetic(SP) particles. The magnetic enhancement of road dust samples in the Scenic Spot was mainly the source of magnetic pollutants input from tourism traffic activities. From the spatial distribution of magnetic parameters of road dust samples, the spatial variation trends of χLF, χARM, SIRM and SOFT were similar, with high value appearing in the area surrounding the Ethnic Culture Village and Souvenir Shop,the middle value appeared in the roads to Tianshan Wonder Stone Museum and the low value distributed in the area of pillar that pacifies the oceans and Xiushui Villa. The traffic volume and intensity of different roads were the main reasons to form the spatial distribution of magnetic properties. It is found that environmental magnetic methods have the potential for monitoring the environmental quality of road environment, delineating potential pollution range and identifying the potential of pollutant sources, and provide a reference for the prevention and control of road traffic pollution in scenic spots.更多还原