新疆喀纳斯景区道路灰尘的磁学特征及环境意义  

Magnetic Properties and Environmental Implications of the Road Dust in the Kanas Scenic Spot of Xinjiang, China

作　　者：哈孜亚·包浪提将 陈学刚[1,2] HAZIYA Baolangtijiang;CHEN Xuegang(School of Geography Science and Tourism,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Arid Lake Environment and Resources,Xinjiang Normal University,Urumqi 830054,China)

机构地区：[1]新疆师范大学地理科学与旅游学院,乌鲁木齐830054 [2]新疆干旱区湖泊与资源重点实验室,乌鲁木齐830054

出　　处：《地球与环境》2018年第6期542-550,共9页Earth and Environment

基　　金：国家自然科学基金项目(41461033、41161029)

摘　　要：为了验证环境磁学方法监测旅游景区道路灰尘环境的可行性,以新疆喀纳斯5A级景区道路灰尘为研究对象,采用磁测和统计方法对其进行磁学特征、空间变异特征及环境意义研究。结果显示,道路灰尘样品磁性矿物含量偏高;载磁矿物以亚铁磁性矿物为主,同时含有一些不完全反铁磁性矿物;磁性矿物粒度主要是多畴和稳定单畴粗颗粒;考虑到研究区远离工业区、城市等污染源,景区道路灰尘样品磁性增强主要来自旅游交通活动输入的磁性污染物颗粒,其次来自路旁表土和自然大气降尘;从道路样品磁性参数的空间分布看,χLF、SIRM、SOFT的空间变化趋势类似,高值区位于景区换乘中心,中值区出现在湖口区域和通往新村和观鱼亭的主干道,低值区分布在新村和通往湖口别墅区的主干道。景区不同道路旅游交通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备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,可以为景区道路交通污染防治提供参考依据。In order to verify the feasibility of using environmental magnetic methods in the environment monitor at scenic spots by the road dust,the environmental magnetic properties,spatial variation and environmental implications of road dust samples in Kanas,a 5A scenic spot of Xinjiang,were systematically analyzed. The results showed that road dust samples had high contents of magnetic minerals and that ferromagnetic minerals were predominated the magnetic materials in road dust samples. The samples also contained some amount of anti-ferromagnetic minerals. The magnetic grains were mainly coarse particles of multi-domain or stable single domain. Considering that the study area is far from pollution sources of industry zone and city,the magnetic enhancement of road dust samples in the scenic spot was mainly from magnetic pollutants inputs,such as tourism traffic activities,while the roadside soil and the natural dust from atmosphere were minor inputs. Speaking the spatial distribution of magnetic parameters in road dust samples,trends of spatial variations of χ LF ,SIRM and SOFT were similar,the high values was found at the transfer center of scenic spot,the middle values appeared in roads to the lake outlet and the low values were distributed in the new village and the main roads to villas around the lake outlet. The traffic volume and intensity of different roads played the main role in the spatial distribution of magnetic properties. Therefore,the environmental magnetic methods can be used in monitoring the environmental quality of roads,delineating potential pollution risks and identifying potential pollutant sources,and can provide references in preventing and controlling traffic pollutions at scenic spots.

关 键 词：道路灰尘 磁性特性 环境意义 喀纳斯景区 

分 类 号：X123[环境科学与工程—环境科学]